Portsmouth
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All-time Records ~ Portsmouth, Virginia

West Cradock Section
Altitude: 020 feet


Summary of Climatological Data for July 1, 1976 to October 27, 2007
(updated periodically)

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TEMPERATURE:

Period Mean:     High = 69.7°     Low = 51.5°     Mean = 60.6°

PRECIPITATION:

Total Period = 1507.32"  
Average daily =    0.13"
Average annual =  48.37"

Measurable precipitation on 3654 out of 11441 days or 31.94%

Total Snowfall = 192.6"      

Average annual snowfall = 6.31"

EXTREMES:

Minimum daily temperature = -3.5° on January 21, 1985
Maximum daily temperature =  103° on August 7, 1977

Precipitation (daily) = 7.82" on October 17th, 1999

Storm total = 10.10" on September 15-16th, 1999
(10.07" on October 17-18th, 1999)

Precipitation (maximum monthly) = 21.91" in September 1999

Precipitation (minimum monthly) = 0.02" in October 2000

Snowfall (daily) = 12.20" on February 6, 1980
Snowfall (monthly) = 21.00" in February 1989
Snowfall (one storm) = 14.00" on March 1-2, 1980
Snowfall (seasonal) = 42.20" 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"
Barometer (minimum) = 28.52" on March 13, 1993
 
  Heating Degree Days (Average Annual) = 3314.15
Cooling Degree Days (Average Annual) = 1698.99

 
 



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