NOAA Eastern Regional Event Data  for Boston
http://www.erh.noaa.gov/er/box/climate/boshistory.html


    
Apr 1 Heavy late snows and northeast gales, 1924

Apr 1  Blizzard of 1997, 25.4 inches of heavy wet snow in 24 hours paralyzes parts of city for days.

Apr 1 Greatest snow depth, 21 inches, 1997 

Apr 3 Lowest pressure ever in April, 28.68 inches, 1975 

Apr 4-5 Northwest gales in 1963 cause widespread damage throughout the state. Peak gust in Boston, 76 mph. 

Apr 5 Lowest temperature 11F, 1874 

Apr 6 Coldest high temperature, 27F, 1881 

Apr 6-8 13.3 inches of snow, 1982 

Apr 7 Snow depth 12 inches, 1982

Apr 7 Highest pressure 30.71 inches, 1945 

Apr 7-8 Severe northeast gale affected Cape Cod, 1950 

Apr 8 Average date of last 32 degree temperature (freeze) 

Apr 9 Strongest average one minute wind velocity, northeast 63 mph, 1935 

Apr 9-10  A 3 inches of snow, 1974 

Apr 10-13 Heavy late snow and northeast gale outside Boston, 1894 

Apr 18 Warmest temperature, 94F, 1976

Apr 18 Warmest low temperature, 66F, 1976 

Apr 20-21 3.32 inches precipitation, greatest in 24 hours, 1991 

Apr 26-28 Northeast gales and high tides, 1911