Casa Grande Weather in August
Average highs run from 106°F on August 1 to 104°F on August 31, and lows from 79°F to 76°F. Normal precipitation for the month is 1.52 in over about 5 wet days.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 105°F
- Average low
- 77°F
- Precipitation
- 1.52 in
- Record high
- 120°FAug 4, 1907
- Record low
- 57°FAug 16, 1971
- Chance of a freeze
- 0%
- Days of 90°F or more
- 30.8
- Daylight
- 13 h 44 min to 12 h 52 min
- Cloud cover
- 45%
- Humidity
- 36%
- Dew point
- 58°F
- Wind
- 5.6 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 |
|---|---|---|---|---|---|
| Aug 1 | 106°F | 79°F | 119°F 1938 | 62°F 1908 | 13% |
| Aug 2 | 106°F | 79°F | 119°F 1907 | 62°F 1945 | 13% |
| Aug 3 | 106°F | 79°F | 115°F 1907 | 66°F 1944 | 14% |
| Aug 4 | 106°F | 78°F | 120°F 1907 | 61°F 1926 | 14% |
| Aug 5 | 106°F | 78°F | 117°F 1907 | 59°F 1976 | 14% |
| Aug 6 | 106°F | 78°F | 117°F 1906 | 65°F 1908 | 14% |
| Aug 7 | 106°F | 78°F | 117°F 2025 | 67°F 1930 | 14% |
| Aug 8 | 106°F | 78°F | 117°F 2025 | 65°F 1925 | 14% |
| Aug 9 | 106°F | 78°F | 115°F 1906 | 63°F 1949 | 14% |
| Aug 10 | 106°F | 78°F | 117°F 1907 | 63°F 1949 | 15% |
| Aug 11 | 106°F | 78°F | 115°F 1907 | 65°F 1949 | 15% |
| Aug 12 | 106°F | 78°F | 116°F 1933 | 63°F 1974 | 15% |
| Aug 13 | 106°F | 78°F | 113°F 2020 | 64°F 1925 | 15% |
| Aug 14 | 106°F | 78°F | 116°F 1907 | 59°F 1979 | 15% |
| Aug 15 | 106°F | 78°F | 114°F 1907 | 59°F 1938 | 15% |
| Aug 16 | 106°F | 77°F | 113°F 1905 | 57°F 1971 | 15% |
| Aug 17 | 105°F | 77°F | 113°F 2020 | 57°F 1938 | 15% |
| Aug 18 | 105°F | 77°F | 115°F 1907 | 59°F 1975 | 15% |
| Aug 19 | 105°F | 77°F | 115°F 1910 | 60°F 1908 | 15% |
| Aug 20 | 105°F | 77°F | 115°F 1903 | 61°F 1974 | 15% |
| Aug 21 | 105°F | 77°F | 115°F 1907 | 57°F 1979 | 14% |
| Aug 22 | 105°F | 77°F | 114°F 1903 | 59°F 1908 | 14% |
| Aug 23 | 105°F | 77°F | 113°F 1906 | 57°F 1908 | 14% |
| Aug 24 | 105°F | 77°F | 115°F 1985 | 57°F 1908 | 14% |
| Aug 25 | 105°F | 76°F | 113°F 2020 | 62°F 1979 | 14% |
| Aug 26 | 105°F | 76°F | 113°F 1981 | 64°F 1933 | 14% |
| Aug 27 | 105°F | 76°F | 113°F 1981 | 60°F 1954 | 13% |
| Aug 28 | 105°F | 76°F | 114°F 1998 | 62°F 1956 | 13% |
| Aug 29 | 104°F | 76°F | 115°F 1905 | 59°F 1974 | 13% |
| Aug 30 | 104°F | 76°F | 118°F 1905 | 58°F 1942 | 13% |
| Aug 31 | 104°F | 76°F | 112°F 1981 | 60°F 1907 | 13% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (MST).
- August 1
- sunrise 5:41 AM, sunset 7:25 PM
- August 31
- sunrise 6:01 AM, sunset 6:53 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00021306 (Casa Grande), public domain. Records: NOAA GHCN-Daily, station USC00021306, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.