Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 09-27
Record Highs
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1: 96°F (1998)
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2: 90°F (2007)
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3: 89°F (2017)
Record Lows
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1: 35°F (1984)
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2: 38°F (1978)
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3: 39°F (1989)
Lowest Highs
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1: 69°F (2011)
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2: 68°F (2017)
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3: 68°F (1999)
Highest Lows
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1: 54°F (1966)
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2: 58°F (1984)
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3: 64°F (1989)
Highest September temperature:
99°F on 09-02-1980.
Lowest September temperature:
30°F on 09-24-1974.
Average temperature is 64.1°F
Average high is 75°F
Average low is 53.3°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.55" (1985)
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2: 1.37" (2018)
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3: 1.20" (1993)
Precipitation data from 1960 to 2022.