Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 09-12
Record Highs
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1: 95°F (2019)
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2: 95°F (1998)
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3: 94°F (1983)
Record Lows
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1: 40°F (1967)
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2: 43°F (1977)
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3: 44°F (1976)
Lowest Highs
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1: 71°F (1963)
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2: 70°F (1978)
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3: 70°F (1971)
Highest Lows
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1: 67°F (2003)
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2: 69°F (2006)
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3: 69°F (1965)
Highest September temperature:
99°F on 09-02-1980.
Lowest September temperature:
30°F on 09-24-1974.
Average temperature is 70.1°F
Average high is 80.7°F
Average low is 59.5°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.18" (1965)
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2: 0.81" (2003)
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3: 0.80" (1989)
Precipitation data from 1960 to 2022.