Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 12-09
Record Highs
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1: 72°F (1978)
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2: 69°F (1966)
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3: 66°F (1987)
Record Lows
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1: 11°F (1989)
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2: 13°F (1961)
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3: 14°F (2002)
Lowest Highs
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1: 51°F (1966)
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2: 50°F (1980)
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3: 47°F (2012)
Highest Lows
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1: 26°F (1989)
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2: 31°F (1961)
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3: 32°F (2018)
Highest December temperature:
79°F on 12-06-1998.
Lowest December temperature:
-4°F on 12-25-1989.
Average temperature is 38.7°F
Average high is 47.7°F
Average low is 29.6°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.12" (1973)
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2: 0.93" (2009)
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3: 0.92" (1991)
Precipitation data from 1960 to 2022.