Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 09-29
Record Highs
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1: 89°F (2019)
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2: 85°F (1986)
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3: 85°F (1973)
Record Lows
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1: 34°F (1978)
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2: 36°F (1981)
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3: 40°F (1970)
Lowest Highs
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1: 69°F (2015)
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2: 68°F (2019)
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3: 68°F (1986)
Highest Lows
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1: 60°F (1964)
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2: 61°F (1984)
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3: 61°F (1970)
Highest September temperature:
99°F on 09-02-1980.
Lowest September temperature:
30°F on 09-24-1974.
Average temperature is 63.3°F
Average high is 74.2°F
Average low is 52.4°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 2.23" (1963)
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2: 1.57" (2015)
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3: 1.08" (1999)
Precipitation data from 1960 to 2022.