Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 07-17
Record Highs
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1: 100°F (1997)
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2: 100°F (1988)
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3: 99°F (2012)
Record Lows
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1: 55°F (2014)
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2: 55°F (1976)
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3: 56°F (1974)
Lowest Highs
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1: 75°F (1988)
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2: 74°F (2020)
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3: 74°F (2013)
Highest Lows
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1: 78°F (1989)
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2: 79°F (1962)
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3: 80°F (2014)
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: 1.11" (2018)
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2: 0.60" (1988)
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3: 0.41" (2019)
Precipitation data from 1960 to 2022.