Hot-summer Mediterranean climate
Climate Clearlake - California
Annual high72ºF
Annual low42ºF
Precipitation31.42 inch
| Month | HighºF | LowºF | Precipinch |
|---|---|---|---|
| Jan | 55 | 32 | 6.45 |
| Feb | 58 | 34 | 5.91 |
| Mar | 62 | 36 | 4.53 |
| Apr | 67 | 39 | 1.73 |
| May | 75 | 45 | 1.13 |
| Jun | 84 | 51 | 0.22 |
| Jul | 92 | 55 | 0.02 |
| Aug | 90 | 53 | 0.10 |
| Sep | 85 | 49 | 0.43 |
| Oct | 75 | 42 | 1.44 |
| Nov | 62 | 35 | 3.51 |
| Dec | 55 | 32 | 5.95 |
- JanHigh 55ºFLow 32ºFPrecip 6.45 inch
- FebHigh 58ºFLow 34ºFPrecip 5.91 inch
- MarHigh 62ºFLow 36ºFPrecip 4.53 inch
- AprHigh 67ºFLow 39ºFPrecip 1.73 inch
- MayHigh 75ºFLow 45ºFPrecip 1.13 inch
- JunHigh 84ºFLow 51ºFPrecip 0.22 inch
- JulHigh 92ºFLow 55ºFPrecip 0.02 inch
- AugHigh 90ºFLow 53ºFPrecip 0.10 inch
- SepHigh 85ºFLow 49ºFPrecip 0.43 inch
- OctHigh 75ºFLow 42ºFPrecip 1.44 inch
- NovHigh 62ºFLow 35ºFPrecip 3.51 inch
- DecHigh 55ºFLow 32ºFPrecip 5.95 inch
Climate summary
What is the average weather in Clearlake, California?
Clearlake experiences a hot-summer climate with strong seasonal changes. Summers are hot and notably dry, while winters are cold and bring abundant rainfall. The area receives moderate precipitation annually, with frequent rain common during the cooler, wetter months.
Clearlake weather averages
Annual high72ºF
Annual low42ºF
Precipitation31.42 inch
Daily normals Clearlake - California - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 53.6 | 32.2 | 0.22 | 0.22 | 0.00 | 0.00 |
| Jan 2 | 53.6 | 32.2 | 0.43 | 0.43 | 0.00 | 0.00 |
| Jan 3 | 53.7 | 32.2 | 0.65 | 0.65 | 0.00 | 0.00 |
| Jan 4 | 53.7 | 32.2 | 0.86 | 0.86 | 0.00 | 0.00 |
| Jan 5 | 53.8 | 32.2 | 1.07 | 1.07 | 0.00 | 0.00 |
| Jan 6 | 53.9 | 32.3 | 1.29 | 1.29 | 0.00 | 0.00 |
| Jan 7 | 53.9 | 32.3 | 1.50 | 1.50 | 0.00 | 0.00 |
| Jan 8 | 54.0 | 32.3 | 1.72 | 1.72 | 0.00 | 0.00 |
| Jan 9 | 54.1 | 32.3 | 1.95 | 1.95 | 0.00 | 0.00 |
| Jan 10 | 54.2 | 32.4 | 2.18 | 2.18 | 0.00 | 0.00 |
| Jan 11 | 54.3 | 32.4 | 2.41 | 2.41 | 0.00 | 0.00 |
| Jan 12 | 54.4 | 32.4 | 2.63 | 2.63 | 0.00 | 0.00 |
| Jan 13 | 54.4 | 32.4 | 2.84 | 2.84 | 0.00 | 0.00 |
| Jan 14 | 54.5 | 32.5 | 3.05 | 3.05 | 0.00 | 0.00 |
| Jan 15 | 54.6 | 32.5 | 3.25 | 3.25 | 0.10 | 0.10 |
| Jan 16 | 54.7 | 32.6 | 3.44 | 3.44 | 0.10 | 0.10 |
| Jan 17 | 54.8 | 32.6 | 3.62 | 3.62 | 0.10 | 0.10 |
| Jan 18 | 54.9 | 32.6 | 3.80 | 3.80 | 0.10 | 0.10 |
| Jan 19 | 55.0 | 32.7 | 3.98 | 3.98 | 0.10 | 0.10 |
| Jan 20 | 55.2 | 32.7 | 4.17 | 4.17 | 0.10 | 0.10 |
| Jan 21 | 55.3 | 32.7 | 4.36 | 4.36 | 0.10 | 0.10 |
| Jan 22 | 55.4 | 32.8 | 4.54 | 4.54 | 0.10 | 0.10 |
| Jan 23 | 55.5 | 32.8 | 4.73 | 4.73 | 0.10 | 0.10 |
| Jan 24 | 55.6 | 32.9 | 4.90 | 4.90 | 0.10 | 0.10 |
| Jan 25 | 55.7 | 32.9 | 5.09 | 5.09 | 0.10 | 0.10 |
| Jan 26 | 55.8 | 33.0 | 5.27 | 5.27 | 0.20 | 0.20 |
| Jan 27 | 55.9 | 33.0 | 5.45 | 5.45 | 0.20 | 0.20 |
| Jan 28 | 56.0 | 33.0 | 5.63 | 5.63 | 0.20 | 0.20 |
| Jan 29 | 56.1 | 33.1 | 5.82 | 5.82 | 0.20 | 0.20 |
| Jan 30 | 56.2 | 33.1 | 6.01 | 6.01 | 0.20 | 0.20 |
| Jan 31 | 56.3 | 33.2 | 6.19 | 6.19 | 0.20 | 0.20 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Clearlake - September 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Sep 1 | 82.0 | 55.0 | 0.00 |
| Sep 2 | 72.0 | 51.1 | 0.00 |
| Sep 3 | 73.0 | 53.1 | – |
| Sep 4 | 69.1 | 44.1 | 0.03 |
| Sep 5 | 75.0 | 44.1 | 0.00 |
| Sep 6 | 78.1 | 44.1 | 0.00 |
| Sep 7 | 81.0 | 46.9 | 0.00 |
| Sep 8 | 87.1 | 45.0 | 0.00 |
| Sep 9 | 91.9 | 52.0 | 0.00 |
| Sep 10 | 95.0 | 62.1 | 0.00 |
| Sep 11 | 98.1 | 54.0 | 0.00 |
| Sep 12 | 93.0 | 55.9 | 0.00 |
| Sep 13 | 87.1 | 50.0 | 0.00 |
| Sep 14 | 81.0 | 46.9 | 0.00 |
| Sep 15 | 87.1 | 46.0 | 0.00 |
| Sep 16 | 89.1 | 48.9 | 0.00 |
| Sep 17 | 77.0 | 51.1 | 0.00 |
| Sep 18 | 79.0 | 46.9 | 0.00 |
| Sep 19 | 88.0 | 50.0 | 0.00 |
| Sep 20 | 91.0 | 51.1 | 0.00 |
| Sep 21 | 84.9 | 50.0 | 0.00 |
| Sep 22 | 88.0 | 50.0 | 0.00 |
| Sep 23 | 87.1 | 50.0 | 0.00 |
| Sep 24 | 91.0 | 48.9 | 0.00 |
| Sep 25 | 90.0 | 57.0 | 0.00 |
| Sep 26 | 80.1 | 45.0 | 0.00 |
| Sep 27 | 77.0 | 51.1 | 0.00 |
| Sep 28 | 80.1 | 43.0 | 0.00 |
| Sep 29 | 89.1 | 46.9 | 0.00 |
| Sep 30 | 91.9 | 50.0 | 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 temperature98.1ºF · Sep 11
- Lowest max temperature69.1ºF · Sep 4
- Highest min temperature62.1ºF · Sep 10
- Lowest min temperature43.0ºF · Sep 28
Geo Clearlake - California
Location
- Country
- United States
- State
- California
- County
- –
- City
- Clearlake
- Zip Code
- 95422
- Elevation
- 1476 ft
- Longitude
- -122.62
- Latitude
- 38.95
- ICAO
- –
- IATA
- –