Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 12-21
Record Highs
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1: 70°F (2013)
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2: 66°F (2018)
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3: 61°F (2011)
Record Lows
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1: 4°F (1989)
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2: 5°F (1981)
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3: 6°F (2000)
Lowest Highs
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1: 51°F (2013)
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2: 46°F (1998)
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3: 44°F (2011)
Highest Lows
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1: 25°F (1989)
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2: 28°F (1985)
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3: 28°F (1983)
Highest December temperature:
79°F on 12-06-1998.
Lowest December temperature:
-4°F on 12-25-1989.
Average temperature is 36.2°F
Average high is 44.7°F
Average low is 27.8°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.15" (1973)
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2: 1.03" (1972)
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3: 0.43" (1993)
Precipitation data from 1960 to 2022.