Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 07-20
Record Highs
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1: 101°F (1980)
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2: 99°F (2020)
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3: 98°F (2019)
Record Lows
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1: 55°F (1974)
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2: 56°F (1984)
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3: 59°F (2003)
Lowest Highs
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1: 75°F (2020)
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2: 75°F (2015)
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3: 75°F (2013)
Highest Lows
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1: 77°F (1965)
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2: 78°F (2000)
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3: 79°F (1996)
Highest July temperature:
105°F on 07-22-2011.
Lowest July temperature:
41°F on 07-01-1988.
Average temperature is 77.5°F
Average high is 87.4°F
Average low is 67.6°F
Temperature data from 1960 to 2022.
Record Precipitation
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1: 2.28" (1970)
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2: 1.99" (1988)
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3: 1.67" (1989)
Precipitation data from 1960 to 2022.