Grass Valley Weather in July
Average highs run from 85°F on July 1 to 89°F on July 31, and lows from 56°F to 59°F. Normal precipitation for the month is 0.00 in over about 0 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
- 88°F
- Average low
- 58°F
- Precipitation
- 0.00 in
- Record high
- 106°FJul 4, 1931
- Record low
- 35°FJul 1, 1912
- Chance of a freeze
- 0%
- Days of 90°F or more
- 13.5
- Daylight
- 14 h 53 min to 14 h 13 min
- Cloud cover
- 18%
- Humidity
- 35%
- Dew point
- 45°F
- Wind
- 6.7 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 | 85°F | 56°F | 101°F 1950 | 35°F 1912 | 4% | 0% |
| Jul 2 | 86°F | 56°F | 102°F 1942 | 35°F 1912 | 3% | 0% |
| Jul 3 | 86°F | 57°F | 102°F 1931 | 38°F 1901 | 3% | 0% |
| Jul 4 | 86°F | 57°F | 106°F 1931 | 35°F 1910 | 3% | 0% |
| Jul 5 | 87°F | 57°F | 103°F 1945 | 39°F 1955 | 3% | 0% |
| Jul 6 | 87°F | 57°F | 102°F 2024 | 36°F 1909 | 3% | 0% |
| Jul 7 | 87°F | 57°F | 106°F 2024 | 37°F 1903 | 2% | 0% |
| Jul 8 | 87°F | 58°F | 103°F 2024 | 39°F 1935 | 2% | 0% |
| Jul 9 | 87°F | 58°F | 102°F 1905 | 40°F 1944 | 2% | 0% |
| Jul 10 | 88°F | 58°F | 102°F 2008 | 38°F 1932 | 2% | 0% |
| Jul 11 | 88°F | 58°F | 102°F 1913 | 40°F 1929 | 2% | 0% |
| Jul 12 | 88°F | 58°F | 101°F 2024 | 41°F 1920 | 2% | 0% |
| Jul 13 | 88°F | 58°F | 104°F 2024 | 40°F 1924 | 2% | 0% |
| Jul 14 | 88°F | 59°F | 105°F 1935 | 40°F 1903 | 2% | 0% |
| Jul 15 | 88°F | 59°F | 106°F 1972 | 40°F 1913 | 2% | 0% |
| Jul 16 | 89°F | 59°F | 104°F 1972 | 40°F 1904 | 2% | 0% |
| Jul 17 | 89°F | 59°F | 103°F 1935 | 40°F 1955 | 2% | 0% |
| Jul 18 | 89°F | 59°F | 105°F 1944 | 41°F 1909 | 1% | 0% |
| Jul 19 | 89°F | 59°F | 104°F 1931 | 41°F 1928 | 1% | 0% |
| Jul 20 | 89°F | 59°F | 105°F 1931 | 40°F 1909 | 1% | 0% |
| Jul 21 | 89°F | 59°F | 105°F 1938 | 40°F 1929 | 1% | 0% |
| Jul 22 | 89°F | 59°F | 105°F 1936 | 41°F 1929 | 1% | 0% |
| Jul 23 | 89°F | 59°F | 104°F 1931 | 38°F 1918 | 1% | 0% |
| Jul 24 | 89°F | 59°F | 104°F 1931 | 37°F 1918 | 1% | 0% |
| Jul 25 | 89°F | 59°F | 105°F 1931 | 41°F 1919 | 1% | 0% |
| Jul 26 | 89°F | 59°F | 106°F 1931 | 42°F 1922 | 1% | 0% |
| Jul 27 | 89°F | 59°F | 103°F 1933 | 38°F 1916 | 1% | 0% |
| Jul 28 | 89°F | 59°F | 103°F 1934 | 37°F 1919 | 1% | 0% |
| Jul 29 | 89°F | 59°F | 100°F 1934 | 37°F 1919 | 2% | 0% |
| Jul 30 | 89°F | 59°F | 102°F 1908 | 38°F 1919 | 2% | 0% |
| Jul 31 | 89°F | 59°F | 103°F 1908 | 38°F 1919 | 2% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- July 1
- sunrise 5:42 AM, sunset 8:35 PM
- July 31
- sunrise 6:04 AM, sunset 8:17 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00043573 (Grass Valley #2), public domain. Records: NOAA GHCN-Daily, station USC00046136, 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.