Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 09-28
Record Highs
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1: 86°F (2019)
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2: 86°F (1998)
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3: 84°F (1973)
Record Lows
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1: 34°F (1989)
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2: 35°F (1991)
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3: 39°F (1980)
Lowest Highs
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1: 66°F (1999)
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2: 65°F (2020)
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3: 65°F (2015)
Highest Lows
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1: 47°F (1984)
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2: 57°F (1966)
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3: 64°F (2001)
Highest September temperature:
99°F on 09-02-1980.
Lowest September temperature:
30°F on 09-24-1974.
Average temperature is 63.7°F
Average high is 74.6°F
Average low is 52.9°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.61" (2004)
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2: 0.97" (1974)
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3: 0.82" (2016)
Precipitation data from 1960 to 2022.