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Get the monthly weather forecast for Santa Rosa, CA, including daily high/low, historical averages, to help you plan ahead.
December Weather in Santa Rosa California, United States. Daily high temperatures decrease by 4°F, from 59°F to 55°F, rarely falling below 49°F or exceeding 66°F. The lowest daily average high temperature is 55°F on December 27. Daily low temperatures decrease by 3°F, from 40°F to 37°F, rarely falling below 28°F or exceeding 50°F.
Feb 9, 2024 · December weather for Santa Rosa, California: December proves to be the coldest month in Santa Rosa, recording an average maximum temperature of 55.6°F (13.1°C) and a minimum temperature of 41.9°F (5.5°C).
- December , marked by an average high-temperature of 55.6°F and a low-temperature of 41.9°F , is the coldest month .
- December temperatures in Santa Rosa, California, vary between a high-temperature of 55.6°F and a low-temperature of 41.9°F .
- In December, the average relative humidity is 75% .
- In Santa Rosa, in December, during 10.5 rainfall days , 2.24" of precipitation is typically accumulated.
- With an average of 9h and 30min of daylight , December has the shortest days of the year in Santa Rosa.
- In December, the average day length is 9h and 32min .
- On the first day of December, sunrise is at 7:09 am and sunset at 4:50 pm . On the last day of the month, sunrise is at 7:27 am and sunset at 4:59...
- The month with the least sunshine in Santa Rosa, California, is December , with an average of 5.7h of sunshine .
- In December, the average sunshine duration in Santa Rosa is 5.7h .
Feb 9, 2024 · In Santa Rosa, California, January kicks off with lower temperatures than the preceding December. The climate in January tends to favor more humidity and a significant amount of rainfall, with the rain gauge reading an average of 2.01" (51mm) during this month. Weather in January »
- Throughout the year, there are 72.8 rainfall days , and 12.01" of precipitation is accumulated.
- The months with the lowest UV index in Santa Rosa, California, are January , February , November and December , with an average maximum UV index of...
- February is the month with the most rainfall . Rain falls for 9.1 days and accumulates 2.64" of precipitation .
- With an average relative humidity of 77% , March is the most humid month in Santa Rosa, California.
- On Sunday, March 12. 2023 , at 2:00 am, Daylight Saving Time starts in Santa Rosa, California, and the time zone changes from PST to PDT. Daylight...
- June has the longest days of the year in Santa Rosa, California, with an average of 14h and 48min of daylight .
- With an average maximum UV index of 6 , June is the month with the highest UV index in Santa Rosa.
- The months with the least rainfall in Santa Rosa, California, are July and August Rain falls for 1.5 days and accumulates 0.04" of rain .
- The month with the most sunshine in Santa Rosa, California, is July , with an average of 11.9h of sunshine .
Weather.com brings you the most accurate monthly weather forecast for Santa Rosa, CA with average/record and high/low temperatures, precipitation and more.
In December, Santa Rosa typically experiences moderate temperatures and high rainfall. December falls within the winter season. Anticipate daytime temperatures around 14°C, while night temperatures can drop to 4°C. On average, December has the most moderate temperatures of the year.
The weather in Santa Rosa in December is moderately chilly with a gentle breeze, with average highs of 57°F (14°C) and lows of 42°F (6°C).
