Santa Rosa, CA Weather
Santa Rosa, CA climate is mild during summer when temperatures tend to be in the 60's and cool during winter when temperatures tend to be in the 50's.
The warmest month of the year is August with an average maximum temperature of 82.30 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 38.80 degrees Fahrenheit.
Temperature variations between night and day tend to be moderate during summer with a difference that can reach 29 degrees Fahrenheit, and fairly limited during winter with an average difference of 19 degrees Fahrenheit.
The annual average precipitation at Santa Rosa is 31.01 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is January with an average rainfall of 6.25 Inches.
Weather Data
Current Conditions
|
Fair, 77°F | Humidity: 43% | Dewpoint: 53°F |
| Wind Speed: SW 7 MPH | Heat Index: 77°F | ||
| Barometer: 29.95 in. | Wind Chill: 77°F |
Weather Forecast
 | Hi: 80°F | Today: Areas of morning low clouds and fog. Otherwise mostly sunny. Highs in the mid 70s to mid 80s. Afternoon seabreeze 5 to 15 mph. |
| Lo: 55°F | ||
| Hi: 85°F | Saturday: Mostly sunny except patchy low clouds and fog until late morning. Highs in the 80s. Afternoon seabreeze 5 to 15 mph. |
| Lo: 56°F | ||
| Hi: 86°F | Sunday: Sunny. Highs in the 80s to mid 90s. Light winds. |
| Lo: 60°F | ||
| Hi: 98°F | Monday: Clear. Very warm. Highs 90s to 104. Lows in the mid 50s to mid 60s. |
| Lo: 60°F | ||
| Hi: 98°F | Tuesday: Clear. Very warm. Highs 90s to 104. Lows in the mid 50s to mid 60s. |
| Lo: 60°F | ||
| Hi: 98°F | Wednesday: Clear. Very warm. Highs 90s to 104. Lows in the mid 50s to mid 60s. |
| Lo: 60°F | ||
| Hi: 98°F | Thursday: Clear. Very warm. Highs 90s to 104. Lows in the mid 50s to mid 60s. |
| Lo: 60°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waxing Crescent Moon | Civil Twilight: 5:20 AM PDT |
Sunrise: 5:51 AM PDT |
| Sunset: 8:38 PM PDT |
Civil Twilight: 9:09 PM PDT |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 57.8 | 62.0 | 64.8 | 69.6 | 74.2 | 79.9 | 82.2 | 82.3 | 81.8 | 76.9 | 65.3 | 58.1 | 71.2 |
| Mean °F | 48.7 | 52.3 | 54.5 | 57.6 | 61.5 | 66.0 | 67.6 | 67.8 | 67.2 | 62.8 | 54.2 | 48.5 | 59.1 |
| Min °F | 39.5 | 42.5 | 44.2 | 45.6 | 48.7 | 52.1 | 53.0 | 53.2 | 52.5 | 48.7 | 43.0 | 38.8 | 46.8 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 6.25 | 6.08 | 4.71 | 1.67 | 0.83 | 0.19 | 0.06 | 0.11 | 0.49 | 1.81 | 4.31 | 4.50 | 31.01 |
