Fairfax County, VA
An ordinary day in Fairfax County, VA: was cooler than 49 of 75 earlier years in the county average (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- High
- 70.8°F
- Coldest since 2023
- 27th coldest of 76
- Low
- 58.8°F
- Warmest since 2025
- 20th warmest of 76
No measurable precipitation in the county average of Fairfax County, VA for 1 day to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 67.5 to 80.1°F
Every year as a table
Every 29 September low of the county average in Fairfax County, VA since 1951: 58.8°F in 2026; the lowest is 38.6°F, in 1978.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 70.8 | 58.8 |
| 2025 | 82 | 61.8 |
| 2024 | 83.4 | 67.9 |
| 2023 | 68.9 | 53.5 |
| 2022 | 67.9 | 48.3 |
| 2021 | 78.2 | 57.3 |
| 2020 | 80.4 | 65.4 |
| 2019 | 85.9 | 65.1 |
| 2018 | 74.9 | 56.5 |
| 2017 | 78.5 | 51.8 |
| 2016 | 70.4 | 64 |
| 2015 | 80.1 | 66.2 |
| 2014 | 79 | 55.3 |
| 2013 | 69.5 | 49.3 |
| 2012 | 77.2 | 55.5 |
| 2011 | 79.6 | 63.6 |
| 2010 | 79.9 | 56 |
| 2009 | 77.7 | 50.1 |
| 2008 | 76.8 | 62.9 |
| 2007 | 79.3 | 54.9 |
| 2006 | 75.7 | 52.3 |
| 2005 | 78.5 | 49.7 |
| 2004 | 73.5 | 63.8 |
| 2003 | 72.8 | 49.8 |
| 2002 | 76.5 | 53.4 |
| 2001 | 63 | 46.4 |
| 2000 | 71.9 | 44.8 |
| 1999 | 72.2 | 65.2 |
| 1998 | 84.4 | 53.1 |
| 1997 | 67 | 59.9 |
| 1996 | 75.7 | 53.4 |
| 1995 | 76.7 | 51.9 |
| 1994 | 71.7 | 51.6 |
| 1993 | 67.6 | 45.9 |
| 1992 | 64.7 | 52.7 |
| 1991 | 68.8 | 43.4 |
| 1990 | 78 | 54.9 |
| 1989 | 67.6 | 44.3 |
| 1988 | 80 | 54.6 |
| 1987 | 82.7 | 55.7 |
| 1986 | 71 | 64.1 |
| 1985 | 71.5 | 45.5 |
| 1984 | 48.4 | 44.3 |
| 1983 | 73.1 | 48.7 |
| 1982 | 71.5 | 52.5 |
| 1981 | 69.8 | 40.5 |
| 1980 | 74 | 45.8 |
| 1979 | 69.1 | 61.7 |
| 1978 | 73.3 | 38.6 |
| 1977 | 72.4 | 47.2 |
| 1976 | 68.8 | 49.7 |
| 1975 | 70.7 | 46 |
| 1974 | 75.9 | 63.3 |
| 1973 | 81.2 | 62.9 |
| 1972 | 68.3 | 60.9 |
| 1971 | 77 | 57.8 |
| 1970 | 66 | 42.8 |
| 1969 | 70.1 | 45.4 |
| 1968 | 76.7 | 49.7 |
| 1967 | 75 | 63.1 |
| 1966 | 58 | 54.4 |
| 1965 | 69.3 | 47.6 |
| 1964 | 56.2 | 49.6 |
| 1963 | 78.8 | 56.6 |
| 1962 | 66.7 | 44.2 |
| 1961 | 75.2 | 42.2 |
| 1960 | 71.3 | 61.5 |
| 1959 | 83.2 | 68.3 |
| 1958 | 66.6 | 40.6 |
| 1957 | 58.4 | 41.1 |
| 1956 | 58.1 | 51.5 |
| 1955 | 76.5 | 53.8 |
| 1954 | 88.9 | 58.4 |
| 1953 | 82.5 | 48.5 |
| 1952 | 75.6 | 46.9 |
| 1951 | 66.8 | 38.7 |
The month
September 2026 so far averaged 70.4°F in Fairfax County, VA, the warmest 1 to 29 September in the county average since 2023, 14th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
The month in words
- August 2026 averaged 77.5°F in Fairfax County, VA, the warmest August in the county average since 2021, tied 8th warmest of 132 (with 2018 and 2009) (county average from NOAA's monthly county data, 1895 to 2026).
- Tuesday 29 September 2026: a high of 70.8°F averaged over Fairfax County, VA, the coldest 29 September day in the county average since 2023, 27th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 58.8°F averaged over Fairfax County, VA, the warmest 29 September night in the county average since 2025, 20th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Sterling-Dulles Airport, VA 11.9 mi, the nearest city with its own station