Cotati Weather in August
Average highs run from 81°F on August 1 to 82°F on August 31, and lows from 53°F to 52°F. Normal precipitation for the month is 0.05 in over about 0 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
- 81°F
- Average low
- 53°F
- Precipitation
- 0.05 in
- Record high
- 105°FAug 30, 1968
- Record low
- 39°FAug 1, 1919
- Chance of a freeze
- 0%
- Days of 90°F or more
- 4.4
- Daylight
- 14 h 07 min to 13 h 02 min
- Cloud cover
- 26%
- Humidity
- 48%
- Dew point
- 46°F
- Wind
- 6.7 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 | 81°F | 53°F | 104°F 1993 | 39°F 1919 | 1% |
| Aug 2 | 81°F | 53°F | 103°F 1946 | 42°F 1925 | 1% |
| Aug 3 | 81°F | 53°F | 103°F 1998 | 44°F 1954 | 1% |
| Aug 4 | 81°F | 53°F | 99°F 1998 | 41°F 1954 | 1% |
| Aug 5 | 81°F | 53°F | 99°F 1921 | 39°F 1916 | 1% |
| Aug 6 | 81°F | 53°F | 103°F 1921 | 41°F 1917 | 1% |
| Aug 7 | 81°F | 53°F | 101°F 1984 | 42°F 1917 | 1% |
| Aug 8 | 81°F | 53°F | 98°F 1936 | 44°F 1937 | 1% |
| Aug 9 | 81°F | 53°F | 103°F 1970 | 42°F 1928 | 1% |
| Aug 10 | 81°F | 53°F | 103°F 1970 | 42°F 1924 | 1% |
| Aug 11 | 81°F | 53°F | 102°F 1937 | 43°F 1922 | 1% |
| Aug 12 | 81°F | 53°F | 99°F 1958 | 40°F 1919 | 1% |
| Aug 13 | 81°F | 53°F | 95°F 1958 | 44°F 1919 | 1% |
| Aug 14 | 81°F | 53°F | 102°F 2020 | 43°F 1955 | 1% |
| Aug 15 | 81°F | 53°F | 102°F 2020 | 42°F 1913 | 1% |
| Aug 16 | 81°F | 53°F | 100°F 2015 | 44°F 1914 | 1% |
| Aug 17 | 81°F | 53°F | 100°F 1939 | 42°F 1935 | 1% |
| Aug 18 | 81°F | 53°F | 98°F 1934 | 42°F 1928 | 1% |
| Aug 19 | 81°F | 53°F | 103°F 1950 | 42°F 1914 | 1% |
| Aug 20 | 81°F | 53°F | 100°F 1964 | 42°F 1928 | 1% |
| Aug 21 | 82°F | 53°F | 97°F 1969 | 42°F 1937 | 1% |
| Aug 22 | 82°F | 53°F | 99°F 1999 | 43°F 1922 | 1% |
| Aug 23 | 82°F | 53°F | 99°F 1959 | 42°F 1928 | 1% |
| Aug 24 | 82°F | 53°F | 103°F 2010 | 42°F 1919 | 2% |
| Aug 25 | 82°F | 53°F | 104°F 1988 | 41°F 1994 | 2% |
| Aug 26 | 82°F | 53°F | 99°F 1944 | 42°F 1935 | 2% |
| Aug 27 | 82°F | 53°F | 104°F 1944 | 43°F 1933 | 2% |
| Aug 28 | 82°F | 53°F | 100°F 1913 | 43°F 1957 | 2% |
| Aug 29 | 82°F | 53°F | 103°F 1968 | 40°F 1935 | 2% |
| Aug 30 | 82°F | 53°F | 105°F 1968 | 42°F 1935 | 2% |
| Aug 31 | 82°F | 52°F | 105°F 1950 | 43°F 1935 | 2% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PDT).
- August 1
- sunrise 6:13 AM, sunset 8:20 PM
- August 31
- sunrise 6:40 AM, sunset 7:42 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00046826 (Petaluma AP), public domain. Records: NOAA GHCN-Daily, station USC00046826, 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.