Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 09-10
Record Highs
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1: 99°F (1983)
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2: 97°F (1989)
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3: 96°F (2016)
Record Lows
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1: 43°F (1981)
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2: 45°F (1972)
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3: 47°F (2017)
Lowest Highs
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1: 74°F (2020)
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2: 72°F (2016)
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3: 71°F (2007)
Highest Lows
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1: 68°F (2018)
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2: 68°F (1967)
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3: 71°F (1969)
Highest September temperature:
99°F on 09-02-1980.
Lowest September temperature:
30°F on 09-24-1974.
Average temperature is 70.8°F
Average high is 81.3°F
Average low is 60.2°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.50" (1968)
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2: 1.11" (1992)
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3: 0.84" (1997)
Precipitation data from 1960 to 2022.