Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 05-21
Record Highs
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1: 92°F (2022)
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2: 92°F (1996)
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3: 87°F (1975)
Record Lows
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1: 33°F (1992)
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2: 37°F (2002)
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3: 38°F (1994)
Lowest Highs
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1: 67°F (2022)
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2: 67°F (2013)
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3: 67°F (1996)
Highest Lows
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1: 58°F (2015)
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2: 59°F (2002)
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3: 60°F (1967)
Highest May temperature:
97°F on 05-29-1969.
Lowest May temperature:
28°F on 05-07-1970.
Average temperature is 65.1°F
Average high is 75.3°F
Average low is 54.9°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.06" (2003)
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2: 0.69" (1983)
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3: 0.59" (2001)
Precipitation data from 1960 to 2022.