Diablo Grande Weather in July
Average highs run from 99°F on July 1 to 99°F on July 31, and lows from 60°F to 62°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
- 100°F
- Average low
- 62°F
- Precipitation
- 0.00 in
- Record high
- 111°FJul 4, 1991
- Record low
- 35°FJul 3, 1995
- Chance of a freeze
- 0%
- Days of 90°F or more
- 29.1
- Daylight
- 14 h 42 min to 14 h 05 min
- Cloud cover
- 14%
- Humidity
- 42%
- Dew point
- 46°F
- Wind
- 9.4 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Jul 1 | 99°F | 60°F | 107°F 1972 | 38°F 1995 | 1% |
| Jul 2 | 100°F | 61°F | 109°F 1950 | 38°F 1995 | 1% |
| Jul 3 | 100°F | 61°F | 109°F 1991 | 35°F 1995 | 1% |
| Jul 4 | 100°F | 61°F | 111°F 1991 | 46°F 2002 | 1% |
| Jul 5 | 100°F | 61°F | 107°F 1970 | 42°F 2023 | 1% |
| Jul 6 | 100°F | 61°F | 106°F 1968 | 39°F 1988 | 1% |
| Jul 7 | 100°F | 61°F | 108°F 1989 | 41°F 1988 | 1% |
| Jul 8 | 100°F | 61°F | 104°F 2017 | 47°F 2003 | 1% |
| Jul 9 | 100°F | 61°F | 105°F 2008 | 46°F 1995 | 1% |
| Jul 10 | 100°F | 62°F | 105°F 2008 | 38°F 1995 | 1% |
| Jul 11 | 100°F | 62°F | 109°F 1961 | 49°F 2026 | 1% |
| Jul 12 | 100°F | 62°F | 109°F 1961 | 48°F 1981 | 1% |
| Jul 13 | 100°F | 62°F | 107°F 1990 | 49°F 1951 | 1% |
| Jul 14 | 100°F | 62°F | 108°F 1972 | 47°F 1966 | 1% |
| Jul 15 | 100°F | 62°F | 109°F 1972 | 45°F 1993 | 1% |
| Jul 16 | 100°F | 62°F | 110°F 1972 | 49°F 1951 | 1% |
| Jul 17 | 100°F | 62°F | 107°F 1988 | 50°F 1955 | 1% |
| Jul 18 | 100°F | 62°F | 109°F 1988 | 50°F 1983 | 1% |
| Jul 19 | 100°F | 62°F | 108°F 1961 | 48°F 1981 | 1% |
| Jul 20 | 100°F | 62°F | 107°F 1961 | 50°F 2025 | 0% |
| Jul 21 | 100°F | 62°F | 106°F 1960 | 50°F 1963 | 0% |
| Jul 22 | 100°F | 62°F | 110°F 2006 | 45°F 2016 | 0% |
| Jul 23 | 100°F | 62°F | 108°F 2006 | 50°F 1995 | 0% |
| Jul 24 | 100°F | 62°F | 108°F 2006 | 49°F 1968 | 0% |
| Jul 25 | 100°F | 62°F | 107°F 2006 | 40°F 1995 | 0% |
| Jul 26 | 100°F | 62°F | 108°F 1964 | 48°F 1955 | 0% |
| Jul 27 | 100°F | 62°F | 106°F 1975 | 47°F 2026 | 0% |
| Jul 28 | 100°F | 62°F | 105°F 1988 | 50°F 1985 | 0% |
| Jul 29 | 100°F | 62°F | 107°F 1954 | 50°F 1950 | 0% |
| Jul 30 | 100°F | 62°F | 105°F 1980 | 49°F 1985 | 0% |
| Jul 31 | 99°F | 62°F | 104°F 1979 | 45°F 1989 | 0% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PDT).
- July 1
- sunrise 5:48 AM, sunset 8:30 PM
- July 31
- sunrise 6:09 AM, sunset 8:14 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00046168 (Newman), public domain. Records: NOAA GHCN-Daily, station USC00048999, 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.