Warm-summer Mediterranean climate
Climate Petaluma - California
Annual high71ºF
Annual low46ºF
Precipitation26.65 inch
| Month | HighºF | LowºF | Precipinch |
|---|---|---|---|
| Jan | 57 | 39 | 4.93 |
| Feb | 62 | 41 | 5.32 |
| Mar | 65 | 42 | 3.79 |
| Apr | 69 | 44 | 1.63 |
| May | 73 | 47 | 0.87 |
| Jun | 79 | 51 | 0.17 |
| Jul | 82 | 52 | 0.01 |
| Aug | 82 | 53 | 0.06 |
| Sep | 82 | 51 | 0.21 |
| Oct | 76 | 48 | 1.43 |
| Nov | 65 | 42 | 3.29 |
| Dec | 57 | 38 | 4.94 |
- JanHigh 57ºFLow 39ºFPrecip 4.93 inch
- FebHigh 62ºFLow 41ºFPrecip 5.32 inch
- MarHigh 65ºFLow 42ºFPrecip 3.79 inch
- AprHigh 69ºFLow 44ºFPrecip 1.63 inch
- MayHigh 73ºFLow 47ºFPrecip 0.87 inch
- JunHigh 79ºFLow 51ºFPrecip 0.17 inch
- JulHigh 82ºFLow 52ºFPrecip 0.01 inch
- AugHigh 82ºFLow 53ºFPrecip 0.06 inch
- SepHigh 82ºFLow 51ºFPrecip 0.21 inch
- OctHigh 76ºFLow 48ºFPrecip 1.43 inch
- NovHigh 65ºFLow 42ºFPrecip 3.29 inch
- DecHigh 57ºFLow 38ºFPrecip 4.94 inch
Climate summary
What is the average weather in Petaluma, California?
Petaluma experiences a warm-summer climate characterized by dry summers and wetter winters. Summers are warm, while winters are cool, with frequent rain or drizzle common during the cooler season. This creates a strong seasonal contrast in both temperature and precipitation patterns, making for a distinctive annual cycle.
Petaluma weather averages
Annual high71ºF
Annual low46ºF
Precipitation26.65 inch
Daily normals Petaluma - California - January
| Day | HighºF | LowºF | Prec/ | Prec/ |
|---|---|---|---|---|
| Jan 1 | 56.8 | 38.2 | 0.16 | 0.16 |
| Jan 2 | 56.8 | 38.2 | 0.31 | 0.31 |
| Jan 3 | 56.9 | 38.3 | 0.47 | 0.47 |
| Jan 4 | 56.9 | 38.3 | 0.62 | 0.62 |
| Jan 5 | 56.9 | 38.4 | 0.77 | 0.77 |
| Jan 6 | 56.9 | 38.4 | 0.92 | 0.92 |
| Jan 7 | 56.9 | 38.5 | 1.08 | 1.08 |
| Jan 8 | 57.0 | 38.5 | 1.24 | 1.24 |
| Jan 9 | 57.0 | 38.6 | 1.40 | 1.40 |
| Jan 10 | 57.0 | 38.7 | 1.56 | 1.56 |
| Jan 11 | 57.1 | 38.7 | 1.73 | 1.73 |
| Jan 12 | 57.1 | 38.8 | 1.89 | 1.89 |
| Jan 13 | 57.2 | 38.8 | 2.05 | 2.05 |
| Jan 14 | 57.3 | 38.9 | 2.21 | 2.21 |
| Jan 15 | 57.3 | 39.0 | 2.36 | 2.36 |
| Jan 16 | 57.4 | 39.0 | 2.51 | 2.51 |
| Jan 17 | 57.5 | 39.1 | 2.65 | 2.65 |
| Jan 18 | 57.6 | 39.1 | 2.80 | 2.80 |
| Jan 19 | 57.6 | 39.2 | 2.95 | 2.95 |
| Jan 20 | 57.7 | 39.3 | 3.09 | 3.09 |
| Jan 21 | 57.8 | 39.3 | 3.24 | 3.24 |
| Jan 22 | 57.9 | 39.4 | 3.39 | 3.39 |
| Jan 23 | 58.0 | 39.4 | 3.54 | 3.54 |
| Jan 24 | 58.2 | 39.5 | 3.69 | 3.69 |
| Jan 25 | 58.3 | 39.5 | 3.84 | 3.84 |
| Jan 26 | 58.4 | 39.6 | 4.00 | 4.00 |
| Jan 27 | 58.5 | 39.6 | 4.16 | 4.16 |
| Jan 28 | 58.7 | 39.7 | 4.31 | 4.31 |
| Jan 29 | 58.8 | 39.7 | 4.46 | 4.46 |
| Jan 30 | 58.9 | 39.7 | 4.62 | 4.62 |
| Jan 31 | 59.1 | 39.8 | 4.77 | 4.77 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Petaluma - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 88.0 | 48.0 | 0.00 |
| Oct 2 | 90.0 | 51.1 | 0.00 |
| Oct 3 | 97.0 | 54.0 | 0.00 |
| Oct 4 | – | – | – |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | 90.0 | 51.1 | 0.00 |
| Oct 8 | 90.0 | 50.0 | 0.00 |
| Oct 9 | 79.0 | 54.0 | 0.00 |
| Oct 10 | 69.1 | 57.0 | 0.00 |
| Oct 11 | – | – | – |
| Oct 12 | – | – | – |
| Oct 13 | – | – | – |
| Oct 14 | 80.1 | 42.1 | 0.00 |
| Oct 15 | 87.1 | 45.0 | 0.00 |
| Oct 16 | 90.0 | 46.9 | 0.00 |
| Oct 17 | – | – | – |
| Oct 18 | – | – | – |
| Oct 19 | – | – | – |
| Oct 20 | – | – | – |
| Oct 21 | 69.1 | 45.0 | 0.00 |
| Oct 22 | 66.9 | 50.0 | 0.04 |
| Oct 23 | 71.1 | 46.9 | 0.04 |
| Oct 24 | 75.9 | 43.0 | 0.00 |
| Oct 25 | – | – | – |
| Oct 26 | – | – | – |
| Oct 27 | – | – | – |
| Oct 28 | 71.1 | 41.0 | 0.00 |
| Oct 29 | 69.1 | 42.1 | 0.00 |
| Oct 30 | 69.1 | 46.0 | 0.00 |
| Oct 31 | 66.9 | 45.0 | 0.00 |
The data for October 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature97.0ºF · Oct 3
- Lowest max temperature66.9ºF · Oct 22
- Highest min temperature57.0ºF · Oct 10
- Lowest min temperature41.0ºF · Oct 28
Geo Petaluma - California
Location
- Country
- United States
- State
- California
- County
- Sonoma
- City
- Petaluma
- Zip Code
- 94952
- Elevation
- 33 ft
- Longitude
- -122.64
- Latitude
- 38.23
- ICAO
- –
- IATA
- –