WEATHER IN Santa Rosa
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Climate tables. Data for Santa Rosa.
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | 2.7 (1988) | 16.6 | 23.8 | 31.6 | 44.9 (2014) |
| february | 1.1 (1966) | 15.3 | 22.3 | 30.1 | 40.6 (2018) |
| march | 0.0 (1976) | 13.5 | 19.9 | 27.4 | 39.7 (2003) |
| april | -7.0 (1989) | 9.6 | 15.6 | 22.8 | 36.1 (1965) |
| may | -8.1 (2007) | 6.2 | 11.6 | 18.3 | 31.3 (2010) |
| june | -10.0 (1979) | 3.0 | 8.4 | 15.1 | 27.2 (1966) |
| july | -10.9 (2007) | 2.1 | 7.7 | 14.6 | 27.8 (1968) |
| august | -10.0 (2010) | 3.5 | 10.0 | 17.7 | 34.4 (2013) |
| september | -9.0 (1974) | 6.0 | 12.8 | 20.4 | 34.4 (2013) |
| october | -3.9 (1958) | 9.3 | 15.9 | 23.2 | 37.8 (1965) |
| november | -1.2 (1992) | 12.5 | 19.7 | 27.2 | 40.0 (1965) |
| december | 2.0 (2001) | 15.2 | 22.7 | 30.4 | 42.0 (2010) |
| year | () | () |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 95.3 | 2.0 (1908) | 221.0 (1931) | 87.6 (2017) |
| february | 88.3 | 1.0 (1908) | 295.0 (1925) | 329.9 (1980) |
| march | 99.0 | 0.0 (1903) | 331.0 (2017) | 199.2 (2010) |
| april | 63.8 | 0.0 (1923) | 215.0 (1954) | 83.4 (2017) |
| may | 32.1 | 0.0 (1907) | 170.0 (1948) | 57.9 (1997) |
| june | 17.3 | 0.0 (1904) | 133.0 (1952) | 72.9 (1997) |
| july | 18.8 | 0.0 (1907) | 176.0 (1985) | 50.0 (1980) |
| august | 26.9 | 0.0 (1902) | 145.0 (2012) | 41.9 (1983) |
| september | 49.7 | 0.0 (1911) | 153.0 (1912) | 45.9 (2013) |
| october | 90.2 | 4.9 (1992) | 273.0 (1921) | 83.4 (2014) |
| november | 75.9 | 0.0 (1908) | 240.0 (1972) | 150.1 (1976) |
| december | 96.1 | 2.0 (1938) | 353.5 (1996) | 99.1 (1989) |
| year | () | () | () |
Number of days with solid, liquid, and mixed precipitation
| Type of precipitation | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Wind speed, m/s
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different wind directions, %
| direction | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Air humidity, %
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Snow cover
| Month | jul | aug | sep | oct | nov | dec | jan | feb | mar | apr | may | jun | Year |
| number of days | |||||||||||||
| height (sm) | |||||||||||||
| max height (sm) |
Cloudy, score
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| total | |||||||||||||
| low |
Number of clear, cloudy and cloudy days
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| Total cloud | |||||||||||||
| Low cloud | |||||||||||||
Number of days with different phenomena
| phenomenon | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different types of clouds, %
| type of clouds | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |