Daily weather and Current Time In Santa Rosa, California

Santa Rosa, Sonoma County is located in the PDT (Pacific Day Time) time zone, UTC/GMT -7 hours during Daylight Saving Time and UTC/GMT -8 hours during Standard Time. The sunrise is at 06:31 and the sunset at 19:55 for the moment of the end of August 2018. The length of the day is 13 hours 23 minutes. The time in Greenwich, London is 8 hours ahead of Santa Rosa, California. 

Santa Rosa, Sonoma County is located in the area of the typical Mediterranean weather with hot summers and wet, cold winters.

In February, the highest temperature reaches 14.7 °C (58.4 °F) and the lowest 2.9 °C (37.3 °F). In July, the highest temperature reaches 32.1 °C (89.8 °F) and the lowest 11.1 °C (51.9 °F). There are approximately 58.1 days in a year when the temperature exceeds 32 °C (90 °F) and about 12.1 days when the temperature is 38 °C (100 °F) or even more.

The highest temperature recorded in the history of  Sonoma County was 47 °C (116 °F) on July 13, 1972, the lowest temperature was filed on December 22, 1990, when it reached -11 °C (13 °F). The number of sunny days per year reaches about 262 days. Therefore, the UV index is 4.9, while the average UV index across the United States is 4.3. The sun shines during the winter about 50% of the time and 60% of the time for the rest of the year. However, the provincial level of the sunshine is about 80% of the time.

The annual rainfall level is 778 millimeters (30.64 inches), and there are approximately 68.6 days with the measurable rainfall. The wettest month ever recorded was January 1995 when the rainfall level was 515 millimeters (20.29 inches). The snow is the rare phenomenon in Sonoma. However, about 1.0 inch of snow has fallen in January 1907 and more recently in February 1976 and 2001.

The average level of humidity is about 80% near the coastline, while it is 75% inland during the winter time and 60% during summer and fall time.

Due to its climate, ideal combination of weather, temperature, and rain, Sonoma County is a perfect place for grape growing. The Sonoma's warm interior valleys are lying in the layers of ocean fog appeared because of the Sonoma's proximity to 60 miles of Pacific Coast shoreline. Therefore, cold nights and temperate days create a perfect condition for agriculture.