Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 05-09
Record Highs
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1: 91°F (1963)
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2: 89°F (2000)
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3: 87°F (1979)
Record Lows
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1: 30°F (1976)
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2: 33°F (2020)
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3: 35°F (1980)
Lowest Highs
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1: 66°F (1964)
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2: 65°F (1979)
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3: 64°F (2009)
Highest Lows
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1: 50°F (2020)
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2: 55°F (1977)
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3: 56°F (1966)
Highest May temperature:
97°F on 05-29-1969.
Lowest May temperature:
28°F on 05-07-1970.
Average temperature is 62°F
Average high is 72.8°F
Average low is 51.2°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 0.93" (1974)
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2: 0.85" (2008)
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3: 0.49" (1969)
Precipitation data from 1960 to 2022.