Warm-summer Mediterranean climate
Climate Graton - California
Annual high72ºF
Annual low42ºF
Precipitation42.28 inch
| Month | HighºF | LowºF | Precipinch |
|---|---|---|---|
| Jan | 57 | 36 | 8.37 |
| Feb | 62 | 38 | 7.76 |
| Mar | 66 | 40 | 5.77 |
| Apr | 71 | 41 | 2.43 |
| May | 76 | 44 | 1.38 |
| Jun | 82 | 47 | 0.30 |
| Jul | 83 | 49 | 0.01 |
| Aug | 84 | 49 | 0.08 |
| Sep | 83 | 47 | 0.33 |
| Oct | 77 | 43 | 2.19 |
| Nov | 66 | 39 | 5.39 |
| Dec | 57 | 35 | 8.27 |
- JanHigh 57ºFLow 36ºFPrecip 8.37 inch
- FebHigh 62ºFLow 38ºFPrecip 7.76 inch
- MarHigh 66ºFLow 40ºFPrecip 5.77 inch
- AprHigh 71ºFLow 41ºFPrecip 2.43 inch
- MayHigh 76ºFLow 44ºFPrecip 1.38 inch
- JunHigh 82ºFLow 47ºFPrecip 0.30 inch
- JulHigh 83ºFLow 49ºFPrecip 0.01 inch
- AugHigh 84ºFLow 49ºFPrecip 0.08 inch
- SepHigh 83ºFLow 47ºFPrecip 0.33 inch
- OctHigh 77ºFLow 43ºFPrecip 2.19 inch
- NovHigh 66ºFLow 39ºFPrecip 5.39 inch
- DecHigh 57ºFLow 35ºFPrecip 8.27 inch
Climate summary
What is the average weather in Graton, California?
Graton experiences a warm-summer climate with a strong seasonal contrast. Summers are warm and very dry, while winters are cool and much wetter. The area receives fairly wet conditions overall, with frequent rain common during the cooler season, though summer months see significantly less precipitation.
Graton weather averages
Annual high72ºF
Annual low42ºF
Precipitation42.28 inch
Daily normals Graton - California - January
| Day | HighºF | LowºF | Prec/ | Prec/ |
|---|---|---|---|---|
| Jan 1 | 56.7 | 36.6 | 0.25 | 0.25 |
| Jan 2 | 56.7 | 36.7 | 0.51 | 0.51 |
| Jan 3 | 56.7 | 36.7 | 0.76 | 0.76 |
| Jan 4 | 56.8 | 36.7 | 1.01 | 1.01 |
| Jan 5 | 56.9 | 36.8 | 1.26 | 1.26 |
| Jan 6 | 56.9 | 36.8 | 1.52 | 1.52 |
| Jan 7 | 57.0 | 36.8 | 1.77 | 1.77 |
| Jan 8 | 57.1 | 36.9 | 2.04 | 2.04 |
| Jan 9 | 57.1 | 36.9 | 2.31 | 2.31 |
| Jan 10 | 57.2 | 37.0 | 2.58 | 2.58 |
| Jan 11 | 57.3 | 37.0 | 2.86 | 2.86 |
| Jan 12 | 57.4 | 37.1 | 3.13 | 3.13 |
| Jan 13 | 57.5 | 37.1 | 3.40 | 3.40 |
| Jan 14 | 57.6 | 37.2 | 3.67 | 3.67 |
| Jan 15 | 57.7 | 37.2 | 3.92 | 3.92 |
| Jan 16 | 57.8 | 37.3 | 4.17 | 4.17 |
| Jan 17 | 57.9 | 37.3 | 4.41 | 4.41 |
| Jan 18 | 58.1 | 37.4 | 4.66 | 4.66 |
| Jan 19 | 58.2 | 37.4 | 4.90 | 4.90 |
| Jan 20 | 58.3 | 37.5 | 5.15 | 5.15 |
| Jan 21 | 58.5 | 37.5 | 5.40 | 5.40 |
| Jan 22 | 58.6 | 37.6 | 5.64 | 5.64 |
| Jan 23 | 58.7 | 37.6 | 5.89 | 5.89 |
| Jan 24 | 58.9 | 37.7 | 6.13 | 6.13 |
| Jan 25 | 59.0 | 37.8 | 6.38 | 6.38 |
| Jan 26 | 59.2 | 37.8 | 6.63 | 6.63 |
| Jan 27 | 59.3 | 37.9 | 6.89 | 6.89 |
| Jan 28 | 59.5 | 37.9 | 7.13 | 7.13 |
| Jan 29 | 59.7 | 38.0 | 7.38 | 7.38 |
| Jan 30 | 59.8 | 38.0 | 7.63 | 7.63 |
| Jan 31 | 60.0 | 38.1 | 7.88 | 7.88 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Graton - September 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Sep 1 | 79.0 | 50.0 | 0.00 |
| Sep 2 | 78.1 | 57.0 | 0.00 |
| Sep 3 | 72.0 | 55.0 | 0.42 |
| Sep 4 | 80.1 | 48.9 | 0.00 |
| Sep 5 | 82.9 | 45.0 | 0.00 |
| Sep 6 | 86.0 | 46.9 | 0.00 |
| Sep 7 | 91.0 | 45.0 | 0.00 |
| Sep 8 | 97.0 | 48.0 | 0.00 |
| Sep 9 | 97.0 | 54.0 | 0.00 |
| Sep 10 | 105.1 | 54.0 | 0.00 |
| Sep 11 | 78.1 | 51.1 | 0.00 |
| Sep 12 | 89.1 | 46.9 | 0.00 |
| Sep 13 | 84.0 | 48.0 | 0.00 |
| Sep 14 | 89.1 | 45.0 | 0.00 |
| Sep 15 | 84.0 | 45.0 | 0.00 |
| Sep 16 | 80.1 | 51.1 | 0.00 |
| Sep 17 | 80.1 | 48.9 | 0.00 |
| Sep 18 | 84.9 | 48.0 | 0.00 |
| Sep 19 | 82.9 | 50.0 | 0.00 |
| Sep 20 | 75.0 | 52.0 | 0.00 |
| Sep 21 | 75.9 | 53.1 | 0.00 |
| Sep 22 | 79.0 | 48.9 | 0.00 |
| Sep 23 | 93.9 | 46.0 | 0.00 |
| Sep 24 | 91.9 | 48.0 | 0.00 |
| Sep 25 | 88.0 | 48.9 | 0.00 |
| Sep 26 | 79.0 | 42.1 | 0.00 |
| Sep 27 | 78.1 | 45.0 | 0.00 |
| Sep 28 | 81.0 | 44.1 | 0.00 |
| Sep 29 | 100.9 | 44.1 | 0.00 |
| Sep 30 | 95.0 | 46.9 | 0.00 |
The data for September 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 temperature105.1ºF · Sep 10
- Lowest max temperature72.0ºF · Sep 3
- Highest min temperature57.0ºF · Sep 2
- Lowest min temperature42.1ºF · Sep 26
Geo Graton - California
Location
- Country
- United States
- State
- California
- County
- Sonoma
- City
- Graton
- Zip Code
- 95472
- Elevation
- 125 ft
- Longitude
- -122.87
- Latitude
- 38.44
- ICAO
- –
- IATA
- –