Barstow Weather in August
Average highs run from 103°F on August 1 to 99°F on August 31, and lows from 72°F to 68°F. Normal precipitation for the month is 0.17 in over about 1 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
- 101°F
- Average low
- 70°F
- Precipitation
- 0.17 in
- Record high
- 117°FAug 2, 1986
- Record low
- 55°FAug 21, 1959
- Chance of a freeze
- 0%
- Days of 90°F or more
- 30.5
- Daylight
- 13 h 52 min to 12 h 56 min
- Cloud cover
- 22%
- Humidity
- 24%
- Dew point
- 39°F
- Wind
- 9.4 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 | 103°F | 72°F | 115°F 1995 | 64°F 1985 | 4% | 0% |
| Aug 2 | 103°F | 72°F | 117°F 1986 | 63°F 1985 | 4% | 0% |
| Aug 3 | 103°F | 72°F | 112°F 1969 | 58°F 1944 | 4% | 0% |
| Aug 4 | 102°F | 72°F | 114°F 2021 | 58°F 1953 | 4% | 0% |
| Aug 5 | 102°F | 72°F | 114°F 1994 | 60°F 1956 | 4% | 0% |
| Aug 6 | 102°F | 72°F | 114°F 1994 | 59°F 1950 | 4% | 0% |
| Aug 7 | 102°F | 72°F | 115°F 1997 | 61°F 1950 | 4% | 0% |
| Aug 8 | 102°F | 72°F | 112°F 1980 | 61°F 1999 | 4% | 0% |
| Aug 9 | 102°F | 72°F | 113°F 1980 | 59°F 1949 | 4% | 0% |
| Aug 10 | 102°F | 72°F | 113°F 1970 | 56°F 1949 | 4% | 0% |
| Aug 11 | 102°F | 71°F | 112°F 1980 | 57°F 1949 | 4% | 0% |
| Aug 12 | 102°F | 71°F | 112°F 2002 | 59°F 1949 | 4% | 0% |
| Aug 13 | 102°F | 71°F | 112°F 1944 | 61°F 1948 | 4% | 0% |
| Aug 14 | 102°F | 71°F | 112°F 2002 | 58°F 1954 | 4% | 0% |
| Aug 15 | 101°F | 71°F | 113°F 2020 | 60°F 1949 | 4% | 0% |
| Aug 16 | 101°F | 71°F | 115°F 2020 | 57°F 1954 | 3% | 0% |
| Aug 17 | 101°F | 70°F | 115°F 2020 | 61°F 1949 | 3% | 0% |
| Aug 18 | 101°F | 70°F | 113°F 2020 | 61°F 1976 | 3% | 0% |
| Aug 19 | 101°F | 70°F | 113°F 2020 | 59°F 1959 | 3% | 0% |
| Aug 20 | 101°F | 70°F | 113°F 2020 | 56°F 1959 | 3% | 0% |
| Aug 21 | 101°F | 70°F | 111°F 2020 | 55°F 1959 | 3% | 0% |
| Aug 22 | 100°F | 70°F | 110°F 1991 | 59°F 1968 | 3% | 0% |
| Aug 23 | 100°F | 69°F | 111°F 1998 | 58°F 1948 | 3% | 0% |
| Aug 24 | 100°F | 69°F | 111°F 1985 | 58°F 1963 | 3% | 0% |
| Aug 25 | 100°F | 69°F | 111°F 1985 | 58°F 1954 | 3% | 0% |
| Aug 26 | 100°F | 69°F | 111°F 2011 | 56°F 1954 | 3% | 0% |
| Aug 27 | 99°F | 69°F | 111°F 2017 | 58°F 1954 | 3% | 0% |
| Aug 28 | 99°F | 68°F | 111°F 1998 | 56°F 1947 | 3% | 0% |
| Aug 29 | 99°F | 68°F | 111°F 2011 | 59°F 1947 | 3% | 0% |
| Aug 30 | 99°F | 68°F | 112°F 1996 | 56°F 1951 | 3% | 0% |
| Aug 31 | 99°F | 68°F | 113°F 1976 | 55°F 1953 | 3% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- August 1
- sunrise 5:58 AM, sunset 7:50 PM
- August 31
- sunrise 6:20 AM, sunset 7:16 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00040521 (Barstow), public domain. Records: NOAA GHCN-Daily, station USW00023161, 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.