|Narrative Summaries for Other Years||
THE YEAR 2018
January 2018 Glen Allen
January was the coldest on record for the first 7 days with a mean temperature of 17.1 °F.
This 7-day period was also the coldest ever first week of a new year in the 121 years of Richmond records.
January 7th had the lowest temperature on record at Glen Allen.
Glen Allen also had two days with 70°F temperatures; only January 2013 has had more.
January had 21 days that were below freezing which is the average for Glen Allen.
The average maximum temperature was 0.4°F colder than average and
the minimum temperature was -3.3°F colder than average for January.
The 58.4°F highest minimum was the second warmest minimum temperature on record for the month.
The highest maximum of 73.2 on the 23rd was the second highest on record for January.
January’s monthly mean temp. was 35.78°F, a -1.5°F departure.
This was only the 6th coldest on record for the month yet there were 7 days that the maximum temperature was 32°F or less.
The minimum of -1.4°F on the 7th was the coldest ever recorded at Glen Allen.
It was a surprise that January’s departure was so little but the graph shows
that after the 1st very cold week the rest of the month was mostly above average except for the 13th to the 18th.
The highest barometric pressure was 30.73 inches on the 7th which was the 3rd highest pressure ever recorded.
The precipitation for January was 2.91 inches, a departure of -0.48 inches and
the 3rd lowest for January with 11 days with measurable precipitation which is average.
The snowfall for January was 4.2 inches which was a negative 1.5-inch departure.
The single day total of 2.2 inches on the 17th was the largest for the month.
The maximum wind gust for the month was 31 mph on the 23rd.
The Richmond International Airport
The Airport tied one and broke 5 daily records for January that are recognized by Wakefield.
The -3°F on January 7th was the lowest temperature at the Airport since 1985 when -6 °F was recorded.
Only 4 Januarys have had a lower minimum temperature in the past 121 years. (1935, 1940, 1942, 1985)
The daily mean for the 7th was 10°F and only seven Januarys have had a lower daily means.
Only 20 Januarys of the past 121 have had a low maximum than the 23°F on the 5th.
On the 12th the overnight low was a warm 59°F.
Only January 1998 in the past 121 years has had warmer minimum which was 62°F.
Only 7 years of the past 121 had a higher average temperature range of 22.6°F and this is the highest average since 1976.
The mean temperature was 35.7 °F with a departure of -2.2°F making it the 41st coldest mean in 121 years.
The average minimum temperature was 26.2°F which was the 42nd coldest minimum temperature on record.
From January 1st to January 7th, the temperature stayed below freezing except for
the 3rd when it was 34°F giving a mean of 17.8°F for the 7-day period.
This was the coldest first week to start a new year in the past 121 years for Richmond.
The next closest record was January 1918.
The 3.41 inches of precipitation was a departure of +0.37 inches making it the 52nd highest January rainfall amount since 1887.
The 5.3 inches of snow recorded in January was the 39th largest snow in January.
January had 4 days with measurable snow and 6 days with measurable snow on the ground.
The Airport had 10 daily records for January of which 6 are recognized by Wakefield.
Jan 28th 25°F new record low maximum - the old record 27°F in 1969, 1959, 1919, 1910
Jan 02nd 10°F tied the old record low minimum set in 1928.
Jan 06th 2°F new record low minimum - the old record 7°F in 1912
Jan 07th -3°F new record low minimum - the old record 10°F in 2014
Jan 12th 59°F new record high minimum- the old record 52°F in 1963
Jan 12th 64.5°F new record high daily mean- the old record 60.0°F in 1963
Jan 05th 18.5°F tied the record low daily mean set in 1981.
Jan 06th 12.5°F new record low daily mean - the old record 13.0°F in 1912
Jan 07th 10.0°F new record low daily mean - the old record 16.0°F in 1914
Jan 04th 2.4 inches new record high daily snowfall- the old record 1.6 inches in 1980
Glen Allen February 2018
February was the second warmest at Glen Allen and February 2017 was the warmest.
February’s mean temperature was 47.2°F, a +6.5°F departure and the 5th warmest on record.
The highest temperature for February was 80.3°F on the 21st and the lowest temperature this month was 12.5°F recorded on the 3rd.
The warmest day was the 21st as the minimum was only 61.0°F, a new record high minimum for the month of February,
and with a maximum of 80.3°F the daily mean was 70.7°F making it the warmest February day on record for Glen Allen by 4.4°F.
There were only 10 days below freezing which was a new record; the previous record was 12 days in 2017.
The 3.51 inches of rain for the month was the 5th wettest February with a + 0.89 inch departure when compared to the 9-year average.
Even though it was only the 5th wettest February had 14 days with measurable precipitation; the previous record was 13 in 2012.
This month was also the cloudiest February on record. Only January of 2017 was cloudier than February of all the recorded months.
This was the first year Glen Allen had no snowfall in February and last year was the second least with a trace making a negative 4.7-inch departure in snowfall.
The maximum wind gust was 36 mph from the south that occurred on Feb. 11th at 1231.
The wind run for the month was 2444 miles a new record for February. The highest barometer recorded for the month was 30.81 inches,
on the 13th and was the 2nd highest for Feb.
The lowest was 29.69 inches on the 11th and 25th and was the highest minimum barometric pressure on record for February.
Winter Season December, January, February 2017-18
TEMPERATURE °F PRECIPITATION Inches SNOWFALL inches
Month Max. Min. Mean 9YrAve Dep. Actual 9 YrAve Dep. Actual 9YrAve Dep.
Dec. 48.9 29.5 39.2 39.6 -0.4 0.99 4.54 -3.55 5.3 5.2 0.1
JAN 47.4 24.1 35.8 37.2 -1.5 2.91 3.39 -0.48 4.2 5.7 -1.5
FEB 57.3 37.0 47.2 40.6 6.5 3.51 2.62 0.89 0 4.7 -4.7
SUM 153.6 90.7 122.2 117.4 4.7 7.41 10.54 -3.13 9.5 15.5 -6.0
AVE. 51.2 30.2 40.7 39.1 1.6 2.47 3.51 -1.04 3.2 5.2 -2.0
Glen Allen had its 4th warmest winter and the 3rd driest winter in the past 9 winters. Glen Allen had 7.41 inches of precipitation this winter
which was a deficit of 3.13 inch deficit for the winter season making this the driest winter since 2010-11 when 6.77 inches of precipitation was recorded.
Richmond International Airport
The Richmond Airport had 5 daily records for February.
Record High Maximums: 2- Feb 21st 80°F new record; the old record was 75°F in 1930, Feb 22nd 75°F a new record;
the old was 73 in 1985. Record High Daily Mean: 2 - Feb 20th 63.5°F new record;
the old record was 63.0°F in 1939, Feb 21st 70.5°F a new record;
the old record was 61.5°F in 1953.
Record High Mins: 1 - Feb 21st 61°F new record; the old record was 54°F in 1953.
The Airport had a mean temperature of 47.8°F making the month the 7th warmest February in the past 138 years.
The Airport’s average maximum temperature of 58.6°F was the 4th highest since 1897.
The maximum temperature this month was 80°F.
Only 9 February’s have had a higher temperature since 1897.
The average minimum temperature of 37.1°F was the 2nd highest average minimum since 1897.
The highest was 37.3 in 1909.
The high minimum temperature of 61°F on the 21st was only 2°F of being the warmest night since 1897.
Only 2008 with 63°F had a higher minimum temperature. The daily mean for the 21st was 70.5°F
the 3rd warmest February day since 1880 except for February 2008 and 1891.
This February had 7 days of = 70°F the record is ten set in 2017 and 1976.
The total precipitation for February was 2.04 inches making it the 33rd driest February since 1897
and February had a negative 3.4 inch snowfall departure.
The Airport didn’t record even a trace of snow for Feb. 2017 and 2018.
This was the first time that consecutive years had no snow since the years 1938 and 1939.
Winter Season December, January, February 2017-18
TEMPERATURE °F PRECIPITATION Inches SNOWFALL inches
Month Max. Min. Mean 30YrAve Dep. Actual 30YrAve Dep. Actual 30YrAve Dep.
Dec. 49.06 30.24 39.65 41.0 -1.4 1.05 3.26 -2.21 3.1 2.1 1.0
JAN 47.00 24.45 35.73 37.9 -2.2 3.41 3.04 0.37 5.3 3.9 1.4
FEB 58.57 37.07 47.82 40.9 6.9 2.04 2.76 -0.72 0.0 3.4 -3.4
SUM 154.63 91.76 123.195 119.8 3.4 6.50 9.06 -2.56 8.4 9.4 -1.0
AVE. 51.5 30.6 41.1 39.9 1.1 2.17 3.02 -0.85 2.8 3.1 -0.3
Richmond had its 43rd warmest winter since 1880 and the 20th driest winter in the past 145 winters.
The Airport had 6.50 inches of precipitation this winter which was a -2.56 inch deficit for the winter season
making this the driest winter since 2008-09 when 6.30 inches of precipitation was recorded.
It is interesting the NWS forecast for the winter was warmer and drier than average and the forecast was correct.
But because of the cold in the first of January and the 14 days with rain in February most people would not think the NWS was correct!
Glen Allen Summary March 2018
Why March even seemed colder than it was, as the mean temperature for March was a full 4.0°F colder than February, quite an anomaly.
March was the 2nd coldest, with 2013 being the coldest, and the third driest on record at Glen Allen.
The monthly mean temperature was 42.9°F, a -5.9°F departure based on a 9-year average.
Glen Allen had 18 days that the minimum temperature was =32°F.
The 82.2°F on the 29th was the maximum for March. The minimum temperature for March was 22.5°F on the 14th.
In March of 2012, Glen Allen had 6 days that the maximum temperature was =80°F; this month had only one.
March had only 3 days that the high temperature was =70°F and the average is 7.4 days but March 2012 had 19 days.
The maximum temperature range for March was 33°F on the 29th which was the lowest maximum range on record for March at this station.
The average ground temperature at one foot for the month was 47.2°F which was a -1.2° departure.
The ave. relative humidity was 66.1% which was the 2nd highest for March.
The 2.62 inches of precipitation for March was a -1.05-inch departure on the 9-year average and the 3rd driest.
The most precipitation in a 24-hour period was 0.98 inches on the 20th and 21th.
March had only 9 days with measurable precipitation the least on record for the Glen Allen station and 4 were =0.10 inches.
The total snowfall was 6.2inches for the month, a departure of +3.0 inches and the 3rd greatest amount for March.
The maximum wind gust during March was 43 mph which occurred on the 2nd at 1443 hours from the WNW,
the 3rd highest on record for March and was Glen Allen’s windiest March with a wind run of 3034.4 miles.
March 2nd had a wind run of 237.2 miles
making it the windiest March day since January 17, 2012 with 247 miles.
March was the 2nd clearest on record.
The highest barometer was 30.67 inches on the 26th which is the 4th highest March barometric pressure for Glen Allen.
The lowest was only 29.48 inches on the 1st.
Richmond International Airport
The average maximum was 53.9 °F and only 15 times has March had a lower average maximum temperature since 1897.
The mean temperature for March was 43.9°F which was -4.7°F below the thirty-year mean temperature.
This was the 22nd coldest March on record since 1897. March had only 3 days that the high temperature was greater than or equal to 64°F.
The highest temperature was 83 °F on the 29th and the lowest temperature of 24 on the 17th.
This March had 16 days that the minimum temperature was =32°F and only 13 years of the 121 years have had more.
The total precipitation for March was 2.33 inches which is a departure of -1.71 inches making it the 31st driest March since 1897.
March had only 8 days with measurable precipitation and only 13 Marchs have had fewer precipitation days.
There were two days with measurable snow in March giving a total of 4 inches which was a departure of +3.4 inches.
The Richmond International Airport had one daily record this March.
The lowest daily temperature range for March was 3°F on the 21st which tied with 1903 and 1924
for the lowest daily temperature range for the date in the past 121 years.
West Henrico Co. - Glen Allen, VA
April was cooler than average by -3.7°F. The monthly mean temperature for April was 55.7°F the lowest on record for April.
It is also the first time that I can remember that our average mean was the same as the Airport’s.
The average minimum temperature of 43.5°F was also a new low record for April.
The average maxmum temperature of 67.6°F was the second lowest on record for April.
The high temperature for April was only 84.8°F on the 13th and the lowest max. was 49.2°F on the 8th
which is the lowest max. recorded at this station in April.
This April had two 80°F days and the average is 5.4 days.
April had 16 days the temperature was 70°F or greater which was a -1.3 day departure.
The maximum daily temperature range was 38.2°F on the 30th. April 24th had only a 5.3°F temperature range a new record low range for April.
The lowest minimum was 29.9°F recorded on the 8th and ties for the 3rd lowest for April.
April had two days with freezing which was a +0.8 day departure and three days with some frost.
The coldest day (lowest daily mean temperature) was 41.7°F occurring on the 8th and was the fourth lowest on record for April.
The warmest day (highest daily mean temperature) was 72.6°F occurring on the 14th.
The average ground temperature at one foot was 55.1°F a -2.2°F departure and a new low record for April.
April was the second wettest at Glen Allen with a total of 3.52 inches, a departure of +0.24 inches based on the average of the past 9 years.
Measurable precipitation occurred on only 8 days which tied for the record low number of days for April.
The maximum precipitation to occur in 24 hours was 1.38 inches on the 24th and 25th.
The cloud cover was only a little above average and the average relative humidity was 65.6% the second highest on record for April.
The maximum wind gust was 40 mph from the SSW that occurred on the 14th at 1636 which was the second highest on record.
April was the windiest April on record with a wind run of 3,162 miles.
The first measurable April snowfall occurred April 7th at Glen Allen but the Airport reported only a trace of snow.
There were only two days with thunder which is tied with 2013 for the lowest on record.
Richmond International Airport
The Airport broke only one daily record for April for highest minimum temperature on April 15th which was 64°F;
the previous record was 63°F in 1967.
The Richmond International Airport had an average maximum temperature of 68.0 which was a departure of -2.3°F.
The average min. temperature of 43.4°F was a departure of -2.7°F.
The minimum average temperature for April tied with 1937 for the 22nd lowest average minimum for April in the past 121 years.
The Airport’s mean temperature for April of 55.7°F was a -2.5°F departure and was the 31st coolest since 1897.
The highest maximum temperature in April was 84°F that occurred on the 13th and the lowest minimum temperature
was 33°F which occurred on the 5th, 7th, 8th.
The daily temperature range on the 30th was 36°F which was the highest temperature range for the month but
only 17 Aprils since 1897 have had a lower temperature range recorded in April.
April on average has the highest temperature range of all the months and averages 39.2°F.
The Richmond International Airport had 3.58 inches of precipitation for April which was the 44th wettest April since 1887.
The 3.58 inches was a +0.31-inch departure from the average of 3.27 inches.
The Airport reported a trace of snow in April for the first time since 2013.
The last measurable snow for Richmond in April was one inch on April 7, 2007 and before this it was 0.2 inches on April 7, 1990.
The latest measurable snowfall for Richmond in the past 121 years was 0.2 inches on April 21, 1953.
In the past 121 years in Richmond there have only been 14 days with measurable snow.
Glen Allen Springfield Park, Virginia
May’s mean temperature was 73.7°F a +5.6°F departure the warmest May on record for Glen Allen.
The average maximum was 84.4°F a +6.1°F departure and the average minimum was 62.9°F a +5.2°F departure.
The maximum temperature for May was 93°F on the 12th which was 1°F from the highest temperature recorded at this station in May.
The high minimum was 72.9°F on the 30th which was 1°F from the record high minimum for May.
The low maximum for May was 73.6°F on the 7th which was a +11.9°F departure.
The minimum temperature was 70°F or above on 6 nights; normally one would expect an average of 1.8 nights.
The month’s lowest minimum was 41.2°F on the 1st of May.
Note that on the graph for the month both the maximum and minimum were above the average for most days of May
and the 1st was the only really cool day and in transitioning to the heat set a new 43°F temperature range record for May.
The strong heating on the 1st also lowered the relative humidity to 18% a new record for May. May was not only warm but humid on many days.
The average relative humidity was 75.6 percent which was the 2nd highest for May; only 2016 was higher.
May, with 11.82 inches of precipitation, was not only the wettest May on record but also the wettest month on record with a +7.12 inch departure.
The 5.09 inches of rain on the 18th set a new calendar day total for all months and
the 6.10 inch total in 24 hours on the 17th and 18th set a new record for all months.
The 1.83 inches in one hour on the 18th set a new record for May and the second greatest for all months.
Glen Allen set new daily rainfall records for four consecutive days from May 16th to May 19th.
The total wind run of 2337.9 miles was a new record for May. The average daily wind run was 75.4 miles which was also a new record for the month.
The maximum wind for the month preceding a thunderstorm was 47 mph on the 14th at 1929 from the NNW,
a new record for May and the strongest wind since June 25, 2012.
May had 8 days with thunder the second greatest on record for May.
May was a little above average on cloudiness with 14 days with measurable rainfall.
The thunderstorm of May 10th produced hail that was as large as 0.5 inches and lasted but four minutes damaging gardens plants.
See the following link for the report on hail.
2018 Spring in West Henrico Co. - Glen Allen, VA
TEMPERATURE PRECIPITATION SNOW
Months 9 Yr. 9 Yr. 9 Yr.
Spring Max. Min. Mean Ave. Dep. Total Ave. Dep. Total Ave. Depart.
Mar. 53.57 32.32 42.95 48.80 -5.9 2.62 3.67 -1.05 6.2 3.5 2.7
Apr. 67.83 43.49 55.66 59.39 -3.7 3.52 3.28 0.24 0.5 0.0 0.5
May 84.41 62.94 73.68 68.03 5.6 11.82 4.70 7.12 0.0 0.0 0.0
SUM 205.82 138.74 172.28 176.23 -3.9 17.96 11.64 6.32 6.7 3.5 3.2
AVE. 68.61 46.25 57.43 58.74 -1.3 5.99 3.88 2.11 2.2 1.2 1.1
This was the wettest spring Glen Allen Springfield Park has ever had; the previous record was 2014.
This spring had the most snow since the cold spring of 2013.
It is surprising that after the warmest May on record that the spring was the 3rd coolest on record because both March and April were below average.
This spring was poor for gardening as April was below average and the first nine days of May had no measurable rain
and the first rain on the 10th came with 0.5 inch hail.
Then on the 14th another thunderstorm had 47 mph winds that flattened some tomato plants.
This was followed by rain so heavy it rotted all the bean seeds not yielding one plant.
Then with a second planting some seeds rotted.
Richmond International Airport
May was both the warmest since 1880 and the wettest on record since 1871 if the precipitation
records taken by the Richmond Fredericksburg and Potomac Railroad Company are used.
The railroad was under the direction of Major Edmund Trewbridge Dana Myers at the time.
The maximum precipitation in a calendar day was 3.86 inches on the 18th which is a new record for the Richmond International Airport for the month of May;
the previous record was 3.22 inches in 1889.
May’s mean temperature was 73.4°F a +7.0°F departure which made it the warmest May on record.
The average maximum was 84.3°F a +6.4°F departure and the average minimum was 62.5°F a +7.5°F departure.
The maximum temperature for May was 93°F on the 12th and the lowest was 42°F recorded on the 1st.
The Richmond International Airport had 7 daily records that either tied or were broken.
Record High Maximums
May 12nd 93°F new record - the old record 92°F in 2015, 1956, 1914
Record High Minimums
May 20th 71°F tied the record set in 1898.
May 30th 72°F new record - the old record 70°F in 2011, 1959
Record High Means
May 12th 79.5°F tied the record set in 2015, 1914
High Daily Temperature Range
May 01st 42°F tied the record set in 1930
Maximum Daily Precipitation
May 17th 2.67 inches new record - the old record 2.16 inches in 1932
May 18th 3.86 inches new record - the old record 3.22 inches in 1889
Spring 2018 Richmond International Airport
TEMPERATURE PRECIPITATION SNOWFALL INCHES
Month Max. Min. Mean 30 Year Dep. Actual 30 Year Dep. Actual 30 Year Dep.
Mar. 53.9 33.8 43.9 48.6 -4.7 2.33 4.04 -1.71 4.0 0.6 -0.6
Apr. 68.0 43.4 55.7 58.2 -2.5 3.58 3.27 0.31 Trace 0.1 -0.1
May 84.3 62.5 73.4 66.4 +7.0 10.35 3.78 6.57 0.0 0 0.0
SUM 206.2 139.8 173.0 173.2 -0.2 16.26 11.09 5.17 4.0 0.7 3.3
AVE. 68.7 46.6 57.7 57.7 -0.08 5.42 3.70 1.72 1.3 0.2 1.1
March and April were rather cold, particularly March,
and even though May was the warmest on record the spring season was still a little cooler than average.
May was the wettest May since 1871.