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, 44°F | Humidity: 83% | Dewpoint: 39°F |
| Wind Speed: N 5.8 MPH (5 KT) | Heat Index: 44°F | ||
| Barometer: 30.08 in. | Wind Chill: 41°F |
Weather Forecast
 | Tonight: Mostly clear. Lows in the mid 40s. Northwest winds 5 to 10 mph. | |
| Lo: 45°F | ||
 | Hi: 66°F | Sunday: Mostly sunny. Highs in the 60s to lower 70s. West winds 5 to 10 mph. |
| Lo: 45°F | ||
 | Hi: 65°F | Monday: Mostly sunny in the morning then becoming partly cloudy. Highs in the 60s. North winds around 5 mph...Becoming southwest in the afternoon. |
| Lo: 49°F | ||
 | Hi: 65°F | Tuesday: Partly cloudy. A chance of showers. Highs in the 60s. |
| Lo: 49°F | ||
| Hi: 65°F | Veterans day: Mostly cloudy in the morning then becoming partly cloudy. A chance of showers. Highs in the 60s. |
| Lo: 45°F | ||
| Hi: 66°F | Thursday: Partly cloudy. Highs in the 60s to lower 70s. Lows in the lower 40s. |
| Lo: 41°F | ||
| Hi: 66°F | Friday: Partly cloudy. Highs in the 60s to lower 70s. Lows in the lower 40s. |
| Lo: 41°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waning Gibbous Moon | Civil Twilight: 6:16 AM PST |
Sunrise: 6:44 AM PST |
| Sunset: 5:04 PM PST |
Civil Twilight: 5:32 PM PST |
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 |
