Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 05-18
Record Highs
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1: 91°F (1987)
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2: 90°F (2017)
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3: 90°F (1977)
Record Lows
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1: 33°F (1973)
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2: 39°F (1983)
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3: 40°F (1984)
Lowest Highs
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1: 68°F (2015)
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2: 67°F (2017)
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3: 66°F (1995)
Highest Lows
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1: 54°F (2003)
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2: 55°F (1981)
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3: 59°F (2007)
Highest May temperature:
97°F on 05-29-1969.
Lowest May temperature:
28°F on 05-07-1970.
Average temperature is 64.3°F
Average high is 74.6°F
Average low is 54°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 3.13" (1988)
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2: 0.87" (1995)
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3: 0.85" (2018)
Precipitation data from 1960 to 2022.