Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 09-19
Record Highs
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1: 93°F (1978)
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2: 93°F (1977)
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3: 92°F (1983)
Record Lows
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1: 36°F (1984)
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2: 43°F (2020)
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3: 43°F (1973)
Lowest Highs
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1: 69°F (2016)
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2: 68°F (1965)
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3: 67°F (1998)
Highest Lows
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1: 63°F (2000)
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2: 64°F (1969)
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3: 65°F (1990)
Highest September temperature:
99°F on 09-02-1980.
Lowest September temperature:
30°F on 09-24-1974.
Average temperature is 67.4°F
Average high is 78.1°F
Average low is 56.8°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.26" (2000)
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2: 1.09" (1964)
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3: 0.54" (1977)
Precipitation data from 1960 to 2022.