Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 12-31
Record Highs
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1: 73°F (1992)
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2: 71°F (1965)
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3: 63°F (1972)
Record Lows
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1: 1°F (1993)
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2: 2°F (1963)
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3: 5°F (1983)
Lowest Highs
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1: 51°F (2021)
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2: 50°F (2022)
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3: 50°F (1992)
Highest Lows
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1: 20°F (1962)
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2: 21°F (2017)
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3: 25°F (1963)
Highest December temperature:
79°F on 12-06-1998.
Lowest December temperature:
-4°F on 12-25-1989.
Average temperature is 34.6°F
Average high is 42.9°F
Average low is 26.4°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.90" (1975)
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2: 0.89" (1970)
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3: 0.80" (1989)
Precipitation data from 1960 to 2022.