Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 09-15
Record Highs
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1: 95°F (1998)
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2: 95°F (1993)
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3: 92°F (1970)
Record Lows
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1: 38°F (1985)
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2: 41°F (1975)
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3: 42°F (2013)
Lowest Highs
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1: 71°F (2005)
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2: 71°F (2002)
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3: 70°F (1993)
Highest Lows
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1: 60°F (1963)
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2: 66°F (1975)
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3: 68°F (2004)
Highest September temperature:
99°F on 09-02-1980.
Lowest September temperature:
30°F on 09-24-1974.
Average temperature is 69°F
Average high is 79.6°F
Average low is 58.4°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.06" (1981)
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2: 0.94" (1976)
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3: 0.45" (1963)
Precipitation data from 1960 to 2022.