Normal yearly rainfall for Santa Rosa, CA is 36.23 inches. Season starts October 1 and ends September 30. At this reporting station we were +14.87 inches ahead for the 2016-2017 season. -6.43 inches behind for the 2017-2018 season, and +7.47 inches ahead for the 2018-2019 season. The average rainfall for January 21, 2021 is 18.90 inches. Current rainfall or this station is 5.92 inches.This station had 18.13 inches in the 2020 rainfall season. In 2016 - 2017 season we had 51.96 inches of rain. This station had 29.80 inches of rain in the 2017-2018 season. For the 2018-2019 season this station had 43.70 inches.

Top 5 wettest years in Santa Rosa since 1888.

1. 2016-2017 60.40 inches

2. 1889-1890 56.07 inches

3. 1982-1983 55.66 inches

4. 1940-1941 52.15 inches

5. 1981-1982 47.70 inches