Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 05-12
Record Highs
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1: 90°F (2018)
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2: 89°F (1991)
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3: 89°F (1982)
Record Lows
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1: 34°F (1969)
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2: 36°F (2020)
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3: 37°F (1989)
Lowest Highs
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1: 66°F (2015)
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2: 65°F (2004)
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3: 64°F (1979)
Highest Lows
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1: 50°F (2008)
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2: 56°F (2017)
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3: 57°F (1998)
Highest May temperature:
97°F on 05-29-1969.
Lowest May temperature:
28°F on 05-07-1970.
Average temperature is 62.7°F
Average high is 73.4°F
Average low is 52.1°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.37" (1974)
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2: 0.78" (2008)
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3: 0.77" (1975)
Precipitation data from 1960 to 2022.