Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 07-31
Record Highs
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1: 98°F (1999)
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2: 97°F (2011)
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3: 95°F (2006)
Record Lows
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1: 50°F (1997)
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2: 51°F (1966)
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3: 55°F (2014)
Lowest Highs
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1: 75°F (2004)
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2: 73°F (2011)
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3: 73°F (2006)
Highest Lows
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1: 70°F (1989)
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2: 79°F (2020)
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3: 79°F (2013)
Highest July temperature:
105°F on 07-22-2011.
Lowest July temperature:
41°F on 07-01-1988.
Average temperature is 77°F
Average high is 86.9°F
Average low is 67.1°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 1.87" (1978)
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2: 1.82" (1992)
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3: 0.40" (1996)
Precipitation data from 1960 to 2022.