Santa Rosa, CA Climate


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United States / California / Santa Rosa-Petaluma Metro Area / Sonoma County / Santa Rosa / Zip Codes
Santa Rosa, CA has a Mediterranean climate, with hot summers and mild winters. Summer temperatures can reach up to the high 90s, while winter lows drop into the mid-40s. The area is known for its warm days and cool nights, making it an ideal climate for growing wine grapes. Santa Rosa receives about 18 inches of rain per year, mainly from November through April. Snow is rare in the Santa Rosa area, but there are occasional snow storms in higher elevation areas near the city.

Santa Rosa, California gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Santa Rosa averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 256 sunny days per year in Santa Rosa. The US average is 205 sunny days.

Santa Rosa gets some kind of precipitation, on average, 76 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 84 degrees
Winter Low: the January low is 38
Rain: averages 38 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Santa Rosa is 8.3 (10=best), which means it is more comfortable than most places in California.

9.3 Summer - 7 Winter
June, August and July are the most pleasant months in Santa Rosa, while December and January are the least comfortable months.

  ClimateSanta Rosa, CaliforniaUnited States
  38.2 in.38.1 in.
  0.0 in.27.8 in.
  75.7 days106.2 days
  256 days205 days
  83.8°85.8°
  38.0°21.7°
  8.37
  4.94.3
  164 ft.2443 ft.
Climate
YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

August is the hottest month for Santa Rosa with an average high temperature of 84.1°, which ranks it as cooler than most places in California. In Santa Rosa, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Santa Rosa are October, May and June.
In Santa Rosa, there are 31.5 days annually when the high temperature is over 90°, which is cooler than most places in California.
December has the coldest nighttime temperatures for Santa Rosa with an average of 37.5°. This is about average compared to other places in California.
In Santa Rosa, there are 22.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.
In Santa Rosa, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.
Humidity in Santa Rosa is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are August, July and June.
December is the wettest month in Santa Rosa with 7.4 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 57% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 38.2 inches in Santa Rosa means that it is wetter than most places in California.
January is the rainiest month in Santa Rosa with 12.8 days of rain, and July is the driest month with only 0.2 rainy days. There are 75.7 rainy days annually in Santa Rosa, which is rainier than most places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 2% chance of a rainy day.
There is rarely any recorded snowfall in Santa Rosa, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in Santa Rosa.
Reviews for Santa Rosa
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amy · Santa Rosa, CA
Too expensive too much crime
This Year

I was born and raised here. Santa Rosa used to be a great city great location great weather but now it is overcrowded and crime is off the charts and housing is crazy  More

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June · Santa Rosa, CA
Really nice town with lots to do
Over 2 years ago

I've lived her over 20 years and it's a pretty nice place. The main vibe is you feel safe doing this day or night. Most of the neighborhoods are well taken care of, they  More

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Andi · Beverly Hills, CA
Avoid Santa Rosa like the plague!
Over 3 years ago

Terrible city that's hurting for money. After going on a long hiatus from enforcing traffic laws, they've recently turned their highways into an ATM machine/cash cow by  More

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