Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 09-22
Record Highs
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1: 94°F (2010)
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2: 94°F (1980)
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3: 94°F (1970)
Record Lows
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1: 35°F (1962)
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2: 38°F (2020)
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3: 38°F (1997)
Lowest Highs
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1: 72°F (1989)
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2: 72°F (1965)
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3: 71°F (2021)
Highest Lows
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1: 63°F (1994)
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2: 64°F (1999)
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3: 65°F (1983)
Highest September temperature:
99°F on 09-02-1980.
Lowest September temperature:
30°F on 09-24-1974.
Average temperature is 66.2°F
Average high is 77°F
Average low is 55.5°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.57" (1982)
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2: 0.96" (1994)
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3: 0.79" (1975)
Precipitation data from 1960 to 2022.