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Cotati, CA Climate
1991 to 2020 normals at Petaluma AP, 7.7 mi from the center of Cotati, elevation 20 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 58° | 39° | 4.77 in | 0.0 in | |
| February | 61° | 40° | 5.23 in | 0.0 in | |
| March | 65° | 42° | 3.32 in | 0.0 in | |
| April | 68° | 44° | 1.68 in | 0.0 in | |
| May | 72° | 47° | 0.93 in | 0.0 in | |
| June | 78° | 50° | 0.28 in | 0.0 in | |
| July | 81° | 52° | 0.01 in | 0.0 in | |
| August | 81° | 53° | 0.05 in | 0.0 in | |
| September | 82° | 51° | 0.09 in | 0.0 in | |
| October | 76° | 48° | 1.27 in | 0.0 in | |
| November | 66° | 42° | 2.74 in | 0.0 in | |
| December | 58° | 38° | 5.19 in | 0.0 in | |
| Year | 70° | 25.56 in | 0.0 in |
Frequently asked questions
- What is the hottest month in Cotati, CA?
- September is the warmest month, with a normal high of 82°F at Petaluma AP.
- What is the coldest month in Cotati, CA?
- December is the coldest month, with a normal low of 38°F.
- What is the wettest month in Cotati, CA?
- February has the most precipitation on average, about 5.23 inches.