Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 09-09
Record Highs
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1: 98°F (2016)
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2: 95°F (1985)
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3: 92°F (2015)
Record Lows
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1: 40°F (1986)
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2: 47°F (1984)
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3: 48°F (1975)
Lowest Highs
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1: 74°F (2016)
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2: 72°F (2015)
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3: 68°F (2011)
Highest Lows
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1: 64°F (2018)
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2: 71°F (2017)
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3: 71°F (1997)
Highest September temperature:
99°F on 09-02-1980.
Lowest September temperature:
30°F on 09-24-1974.
Average temperature is 71.1°F
Average high is 81.6°F
Average low is 60.5°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.40" (2018)
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2: 1.34" (1999)
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3: 0.86" (1985)
Precipitation data from 1960 to 2022.