Annual Weather Averages Near Sonoma
Averages are for Napa County Airport, which is 18 kilometers from Sonoma.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Sonoma
High Temp: 27 °C
Low Temp: 3 °C
Mean Temp: 14 °C
Precipitation: 46.9 mm
Humidity: 69%
Dew Point: 8 °C
Wind: 20 km/h
Pressure: 101.56 kPa
Visibility: 16 km
January Climate & Weather Averages in Sonoma
High Temp: 14 °C
Low Temp: 3 °C
Mean Temp: 9 °C
Precipitation: 113.3 mm
Humidity: 81%
Dew Point: 5 °C
Wind: 16 km/h
Pressure: 101.99 kPa
Visibility: 12 km
February Climate & Weather Averages in Sonoma
High Temp: 16 °C
Low Temp: 4 °C
Mean Temp: 10 °C
Precipitation: 107.0 mm
Humidity: 76%
Dew Point: 6 °C
Wind: 16 km/h
Pressure: 101.78 kPa
Visibility: 15 km
March Climate & Weather Averages in Sonoma
High Temp: 18 °C
Low Temp: 5 °C
Mean Temp: 12 °C
Precipitation: 73.1 mm
Humidity: 73%
Dew Point: 7 °C
Wind: 17 km/h
Pressure: 101.73 kPa
Visibility: 16 km
April Climate & Weather Averages in Sonoma
High Temp: 20 °C
Low Temp: 6 °C
Mean Temp: 13 °C
Precipitation: 34.3 mm
Humidity: 68%
Dew Point: 8 °C
Wind: 22 km/h
Pressure: 101.61 kPa
Visibility: 18 km
May Climate & Weather Averages in Sonoma
High Temp: 23 °C
Low Temp: 9 °C
Mean Temp: 16 °C
Precipitation: 22.3 mm
Humidity: 66%
Dew Point: 9 °C
Wind: 25 km/h
Pressure: 101.40 kPa
Visibility: 17 km
June Climate & Weather Averages in Sonoma
High Temp: 26 °C
Low Temp: 11 °C
Mean Temp: 18 °C
Precipitation: 5.9 mm
Humidity: 61%
Dew Point: 11 °C
Wind: 28 km/h
Pressure: 101.22 kPa
Visibility: 18 km
July Climate & Weather Averages in Sonoma
High Temp: 26 °C
Low Temp: 12 °C
Mean Temp: 19 °C
Precipitation: 0.2 mm
Humidity: 64%
Dew Point: 12 °C
Wind: 28 km/h
Pressure: 101.26 kPa
Visibility: 17 km
August Climate & Weather Averages in Sonoma
High Temp: 27 °C
Low Temp: 12 °C
Mean Temp: 19 °C
Precipitation: 1.2 mm
Humidity: 64%
Dew Point: 12 °C
Wind: 25 km/h
Pressure: 101.23 kPa
Visibility: 17 km
September Climate & Weather Averages in Sonoma
High Temp: 27 °C
Low Temp: 10 °C
Mean Temp: 19 °C
Precipitation: 2.0 mm
Humidity: 62%
Dew Point: 11 °C
Wind: 19 km/h
Pressure: 101.22 kPa
Visibility: 16 km
October Climate & Weather Averages in Sonoma
High Temp: 24 °C
Low Temp: 8 °C
Mean Temp: 16 °C
Precipitation: 33.1 mm
Humidity: 62%
Dew Point: 8 °C
Wind: 14 km/h
Pressure: 101.48 kPa
Visibility: 16 km
November Climate & Weather Averages in Sonoma
High Temp: 18 °C
Low Temp: 5 °C
Mean Temp: 11 °C
Precipitation: 55.5 mm
Humidity: 73%
Dew Point: 7 °C
Wind: 12 km/h
Pressure: 101.83 kPa
Visibility: 14 km
December Climate & Weather Averages in Sonoma
High Temp: 14 °C
Low Temp: 3 °C
Mean Temp: 9 °C
Precipitation: 114.6 mm
Humidity: 79%
Dew Point: 5 °C
Wind: 15 km/h
Pressure: 101.97 kPa
Visibility: 13 km