Cotati climate

Cotati Weather in July

NOAA 1991-2020 normals for Petaluma AP, 11.6 km from Cotati

Average highs run from 81°F on July 1 to 81°F on July 31, and lows from 52°F to 53°F. Normal precipitation for the month is 0.01 in over about 0 wet days.

July day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Cotati, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

July at a glance

Average high
81°F
Average low
52°F
Precipitation
0.01 in
Record high
110°FJul 14, 1972
Record low
39°FJul 1, 1919
Chance of a freeze
0%
Days of 90°F or more
3.7
Daylight
14 h 47 min to 14 h 09 min
Cloud cover
27%
Humidity
49%
Dew point
47°F
Wind
6.9 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
Jul 181°F52°F102°F 198439°F 19192%
Jul 281°F52°F105°F 199140°F 19332%
Jul 381°F52°F103°F 193140°F 19852%
Jul 481°F52°F105°F 193144°F 19542%
Jul 581°F52°F99°F 192142°F 19552%
Jul 681°F52°F103°F 192141°F 19182%
Jul 781°F52°F105°F 192142°F 19161%
Jul 881°F52°F101°F 200841°F 19331%
Jul 981°F52°F106°F 196139°F 19331%
Jul 1081°F52°F109°F 195940°F 19181%
Jul 1181°F52°F108°F 191342°F 19181%
Jul 1281°F52°F100°F 198340°F 19351%
Jul 1381°F52°F108°F 197240°F 19961%
Jul 1481°F52°F110°F 197242°F 19131%
Jul 1581°F52°F107°F 197243°F 19131%
Jul 1681°F53°F97°F 198844°F 19131%
Jul 1781°F53°F107°F 198844°F 19131%
Jul 1881°F53°F103°F 196146°F 19191%
Jul 1981°F53°F101°F 193644°F 19181%
Jul 2081°F53°F101°F 191743°F 19181%
Jul 2181°F53°F100°F 191742°F 19341%
Jul 2281°F53°F101°F 191643°F 19141%
Jul 2381°F53°F106°F 200640°F 19221%
Jul 2481°F53°F100°F 197441°F 19341%
Jul 2581°F53°F102°F 197341°F 19251%
Jul 2681°F53°F105°F 197342°F 19231%
Jul 2781°F53°F101°F 192340°F 19181%
Jul 2881°F53°F104°F 195442°F 19161%
Jul 2981°F53°F100°F 195440°F 19981%
Jul 3081°F53°F104°F 197740°F 19981%
Jul 3181°F53°F101°F 199339°F 19191%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Cotati, in percent.00.511.521102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (PDT).

July 1
sunrise 5:51 AM, sunset 8:38 PM
July 31
sunrise 6:12 AM, sunset 8:21 PM

Every day of July: sun and moon

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.