Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 09-30
Record Highs
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1: 92°F (1986)
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2: 87°F (1998)
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3: 80°F (1990)
Record Lows
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1: 35°F (1993)
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2: 37°F (1978)
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3: 38°F (1992)
Lowest Highs
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1: 68°F (2019)
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2: 68°F (1986)
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3: 63°F (1998)
Highest Lows
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1: 57°F (1993)
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2: 58°F (1976)
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3: 60°F (1992)
Highest September temperature:
99°F on 09-02-1980.
Lowest September temperature:
30°F on 09-24-1974.
Average temperature is 62.9°F
Average high is 73.8°F
Average low is 52°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 4.74" (2010)
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2: 0.86" (1976)
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3: 0.85" (1964)
Precipitation data from 1960 to 2022.