Phoenix Weather in August
Average highs run from 90°F on August 1 to 85°F on August 31, and lows from 51°F to 47°F. Normal precipitation for the month is 0.37 in over about 2 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
- 87°F
- Average low
- 49°F
- Precipitation
- 0.37 in
- Record high
- 114°FAug 8, 1981
- Record low
- 39°FAug 27, 1962
- Chance of a freeze
- 0%
- Days of 90°F or more
- 12.8
- Daylight
- 14 h 26 min to 13 h 11 min
- Cloud cover
- 23%
- Humidity
- 50%
- Dew point
- 46°F
- Wind
- 3.8 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 |
|---|---|---|---|---|---|---|
| Aug 1 | 90°F | 51°F | 110°F 2017 | 44°F 1937 | 6% | 0% |
| Aug 2 | 90°F | 51°F | 112°F 2017 | 45°F 1956 | 6% | 0% |
| Aug 3 | 90°F | 51°F | 109°F 2017 | 44°F 1956 | 6% | 0% |
| Aug 4 | 89°F | 51°F | 108°F 1998 | 47°F 1928 | 6% | 0% |
| Aug 5 | 89°F | 51°F | 106°F 1932 | 43°F 1969 | 6% | 0% |
| Aug 6 | 89°F | 51°F | 108°F 1972 | 44°F 1931 | 6% | 0% |
| Aug 7 | 89°F | 51°F | 111°F 1981 | 43°F 1975 | 6% | 0% |
| Aug 8 | 89°F | 51°F | 114°F 1981 | 46°F 1949 | 6% | 0% |
| Aug 9 | 89°F | 51°F | 111°F 1981 | 46°F 1938 | 6% | 0% |
| Aug 10 | 89°F | 51°F | 110°F 1981 | 45°F 1947 | 6% | 0% |
| Aug 11 | 88°F | 50°F | 109°F 1971 | 45°F 1932 | 6% | 0% |
| Aug 12 | 88°F | 50°F | 107°F 1935 | 46°F 1951 | 6% | 0% |
| Aug 13 | 88°F | 50°F | 108°F 2002 | 46°F 1949 | 6% | 0% |
| Aug 14 | 88°F | 50°F | 111°F 2023 | 45°F 1928 | 6% | 0% |
| Aug 15 | 88°F | 50°F | 108°F 2008 | 44°F 1928 | 6% | 0% |
| Aug 16 | 88°F | 50°F | 107°F 1977 | 43°F 1935 | 6% | 0% |
| Aug 17 | 87°F | 49°F | 105°F 1992 | 44°F 1972 | 6% | 0% |
| Aug 18 | 87°F | 49°F | 108°F 2016 | 44°F 1995 | 6% | 0% |
| Aug 19 | 87°F | 49°F | 109°F 2016 | 45°F 1964 | 6% | 0% |
| Aug 20 | 87°F | 49°F | 105°F 2016 | 43°F 1974 | 7% | 0% |
| Aug 21 | 87°F | 49°F | 104°F 1961 | 44°F 1947 | 7% | 0% |
| Aug 22 | 86°F | 49°F | 104°F 1942 | 43°F 1943 | 7% | 0% |
| Aug 23 | 86°F | 48°F | 102°F 1958 | 44°F 1971 | 7% | 0% |
| Aug 24 | 86°F | 48°F | 105°F 2025 | 44°F 1951 | 7% | 0% |
| Aug 25 | 86°F | 48°F | 105°F 2010 | 41°F 1969 | 7% | 0% |
| Aug 26 | 86°F | 48°F | 103°F 1934 | 43°F 1976 | 7% | 0% |
| Aug 27 | 86°F | 48°F | 106°F 1972 | 39°F 1962 | 7% | 0% |
| Aug 28 | 85°F | 47°F | 104°F 1967 | 41°F 1937 | 8% | 0% |
| Aug 29 | 85°F | 47°F | 103°F 2007 | 41°F 1937 | 8% | 0% |
| Aug 30 | 85°F | 47°F | 106°F 1987 | 42°F 1932 | 8% | 0% |
| Aug 31 | 85°F | 47°F | 104°F 1998 | 41°F 1932 | 8% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- August 1
- sunrise 6:04 AM, sunset 8:30 PM
- August 31
- sunrise 6:36 AM, sunset 7:47 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00350304 (Ashland), public domain. Records: NOAA GHCN-Daily, station USW00024225, 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.