Portsmouth Weather Records Service Portsmouth, Virginia   
All-time Records ~ Portsmouth, Virginia
West Cradock Section 
Lat: N 36 ° 48 ' 4 '' ( 36.801 ° )
Lon: W 76 ° 19 ' 37 '' ( -76.327 ° ) 
Altitude: 020 feet
National Weather Service Wakefield, VA TRAINED SPOTTER  
MADIS ID: C9343 


Summary of Climatological Data for July 1, 1976 to September 13, 2011
(updated periodically) View Recent Records-
 


TEMPERATURE: 
Period Mean:     High = 69.8 °F     Low = 51.6 °F     Mean = 60.7 °F 

December 2010 was the coldest December in the database to 1976 with an average temperature of 33.7°. 
The top 5 coldest Decembers in the West Cradock section of Portsmouth include: 
1) 33.7° 2010 
2) 34.7° 1989 
3) 38.0° 2000 
4) 39.4° 1995 
5) 39.5° 1981 

PRECIPITATION: 
Total Period = 1717.43 inches   
Average daily =    0.13 inches
Average annual =  49.07 inches
Measurable precipitation on 4122 out of 12824 days or 31.99%
Total Snowfall = 206.8 inches       
Average annual snowfall = 5.91 inches 

EXTREMES: 
Minimum daily temperature = -3.5 °F on January 21, 1985
Maximum daily temperature =  104° on July 24 and July 25, 2010

The longest period of 90°+ daily maximum temperatures is 26 consecutive days, July 12-August 6, 1995. 
The period July 11th-25th, 2010 TIES two other 15-day periods in the station's database (to 1976) for 
the 2nd longest period of 90°+ daily maximum temps on 15 consecutive days. 
The other periods are August 3-17, 1977 and July 29-August 12, 1980.
 
Precipitation (daily) = 9.10 inches on September 30th, 2010
Storm total = 10.10 inches on September 15-16th, 1999
(10.07 inches on October 17-18th, 1999)

Event total = 15.18 inches September 26th -October 1st, 2010
This event lasted 109 hours resulted from a series of lows rather than one storm.
During the period, these daily rain totals were recorded; new station daily record rainfalls are noted with an asterisk:
26th        0.36"
27th        3.24"*
28th        0.45"
29th        1.48"*
30th        9.10"* (ALSO THE ALL-TIME STATION DAILY RAINFALL RECORD)
 1st         0.55"        
[database to 1976] 


Precipitation (maximum monthly) = 21.91 inches in September 1999
Precipitation (minimum monthly) = 0.02 inches in October 2000

Snowfall (daily) = 12.2 inches on February 6, 1980
The top 5 station daily snowfall amounts include: 
1) 12.2" February 6, 1980
2) 11.5" February 18, 1989
3) 10.1" December 26, 2010 
4) 10.0" March 2, 1980 
5)   8.0" January 3, 2002. 

Snowfall (monthly) = 21.0 inches in February 1989

The top 5 snowiest  Decembers  in the West Cradock section of Portsmouth include: 
1) 15.4" 2010 
2) 5.8" 2004 
3) 1.7" 1993 
4) 1.3" 2000 
5) 1.2" 1989. 

 
Snowfall (one storm) = 14.0 inches on March 1-2, 1980
The top 5 station snowstorm totals include: 
1) 14.0" March 1-2, 1980
2) 14.0" February 17-19, 1989 
3) 12.2" February 6-7, 1980 
4) 11.1" December 25-27, 2010 
5)  9.0" February 2-3, 2002. 


Snowfall (seasonal) = 42.20 inches 1979-1980

Wind gust = West 70 mph March 13, 1993 (Blizzard of 1993)
ENE 70 mph September 18, 2003 (Hurricane Isabel) 

Barometer (maximum) = 30.98 inches
Barometer (minimum) = 28.52 inches on March 13, 1993 
  
  Heating Degree Days (Average Annual) = 3304.56
Cooling Degree Days (Average Annual) = 1716.67

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