Records for Sterling-Dulles Airport Area, Virginia (IADthr) on 09-20
Record Highs
-
1: 91°F (1965)
-
2: 90°F (1983)
-
3: 90°F (1963)
Record Lows
-
1: 40°F (1979)
-
2: 41°F (2020)
-
3: 45°F (2019)
Lowest Highs
-
1: 70°F (1988)
-
2: 69°F (1965)
-
3: 68°F (2016)
Highest Lows
-
1: 62°F (1966)
-
2: 64°F (1964)
-
3: 64°F (1962)
Highest September temperature:
99°F on 09-02-1980.
Lowest September temperature:
30°F on 09-24-1974.
Average temperature is 67°F
Average high is 77.7°F
Average low is 56.3°F
Temperature data from 1960 to 2022.
Record Precipitation
-
1: 0.87" (1966)
-
2: 0.85" (2001)
-
3: 0.60" (1969)
Precipitation data from 1960 to 2022.