Fairfax Weather in July
Average highs run from 92°F on July 1 to 95°F on July 31, and lows from 70°F to 71°F. Normal precipitation for the month is 3.75 in over about 5 wet days.
July day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
July at a glance
- Average high
- 94°F
- Average low
- 71°F
- Precipitation
- 3.75 in
- Record high
- 116°FJul 6, 1996
- Record low
- 50°FJul 5, 1972
- Chance of a freeze
- 0%
- Days of 90°F or more
- 24.4
- Daylight
- 14 h 37 min to 14 h 02 min
- Cloud cover
- 42%
- Humidity
- 67%
- Dew point
- 68°F
- Wind
- 8.7 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Jul 1 | 92°F | 70°F | 103°F 1988 | 57°F 1999 | 19% | 0% |
| Jul 2 | 93°F | 70°F | 105°F 1970 | 54°F 2013 | 19% | 0% |
| Jul 3 | 93°F | 70°F | 105°F 1996 | 53°F 2013 | 18% | 0% |
| Jul 4 | 93°F | 70°F | 105°F 1953 | 58°F 1972 | 18% | 0% |
| Jul 5 | 93°F | 70°F | 111°F 1996 | 50°F 1972 | 18% | 0% |
| Jul 6 | 93°F | 71°F | 116°F 1996 | 52°F 1983 | 18% | 0% |
| Jul 7 | 93°F | 71°F | 105°F 1954 | 58°F 1967 | 18% | 0% |
| Jul 8 | 94°F | 71°F | 103°F 1995 | 55°F 1952 | 17% | 0% |
| Jul 9 | 94°F | 71°F | 110°F 2011 | 55°F 1952 | 17% | 0% |
| Jul 10 | 94°F | 71°F | 110°F 2011 | 58°F 1952 | 17% | 0% |
| Jul 11 | 94°F | 71°F | 111°F 1954 | 59°F 1953 | 17% | 0% |
| Jul 12 | 94°F | 71°F | 113°F 1954 | 55°F 1975 | 17% | 0% |
| Jul 13 | 94°F | 71°F | 114°F 1954 | 50°F 1975 | 17% | 0% |
| Jul 14 | 94°F | 71°F | 115°F 1954 | 51°F 1967 | 17% | 0% |
| Jul 15 | 94°F | 71°F | 107°F 1954 | 56°F 1967 | 17% | 0% |
| Jul 16 | 94°F | 71°F | 109°F 1954 | 58°F 1967 | 17% | 0% |
| Jul 17 | 94°F | 71°F | 110°F 1954 | 58°F 1967 | 17% | 0% |
| Jul 18 | 95°F | 71°F | 110°F 1954 | 60°F 2014 | 17% | 0% |
| Jul 19 | 95°F | 71°F | 110°F 2022 | 59°F 2014 | 17% | 0% |
| Jul 20 | 95°F | 71°F | 108°F 2006 | 53°F 1971 | 17% | 0% |
| Jul 21 | 95°F | 71°F | 107°F 1974 | 52°F 1970 | 17% | 0% |
| Jul 22 | 95°F | 71°F | 110°F 1954 | 53°F 1970 | 17% | 0% |
| Jul 23 | 95°F | 71°F | 107°F 1981 | 55°F 1980 | 17% | 0% |
| Jul 24 | 95°F | 71°F | 110°F 2011 | 61°F 2019 | 17% | 0% |
| Jul 25 | 95°F | 71°F | 106°F 1952 | 61°F 1991 | 17% | 0% |
| Jul 26 | 95°F | 71°F | 109°F 1978 | 56°F 2004 | 17% | 0% |
| Jul 27 | 95°F | 71°F | 109°F 2011 | 56°F 1971 | 17% | 0% |
| Jul 28 | 95°F | 71°F | 108°F 1986 | 53°F 2005 | 17% | 0% |
| Jul 29 | 95°F | 71°F | 112°F 1986 | 55°F 2005 | 17% | 0% |
| Jul 30 | 95°F | 71°F | 110°F 2012 | 51°F 1971 | 17% | 0% |
| Jul 31 | 95°F | 71°F | 111°F 2012 | 52°F 1971 | 17% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- July 1
- sunrise 6:12 AM, sunset 8:49 PM
- July 31
- sunrise 6:32 AM, sunset 8:34 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00347390 (Ralston), public domain. Records: NOAA GHCN-Daily, station USW00013969, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.