Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Santa Rosa Weather in September
Santa Rosa in September averages 28°C (82°F) during the day and 11°C (52°F) at night. This is part of the summer season. Minimal rainfall is to be expected.
Rainfall in Santa Rosa in September
Typically around 2 days of rainfall are expected, averaging 5.8 mm (0.2 in) for the month. Any rain that does arrive is likely to be light drizzle rather than a proper shower.
Temperature in Santa Rosa in September
The excellent temperature in Santa Rosa in September makes it a solid month to visit, with 28°C (82°F) during the day and 11°C (52°F) at night. September is part of summer. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 11°C (52°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. On average, it is the warmest month of the year.
Sunshine in Santa Rosa in September
The city usually sees around 275 hours of sunlight, indicating many sunny days , a great month for sightseeing.If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Santa Rosa.
Santa Rosa Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
28°C (82°F)
Chance of Rain
6%
Precipitation
5.8 mm (0.2 in)
Rainy days
2 days
Sunshine
275 hours *
Percentage Sunshine
77% *
* Data from: Healdsburg, the United States of America (23 KM, 14 Miles).
Santa Rosa Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Santa Rosa - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Santa Rosa in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Santa Rosa in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming10/10 -
Cycling8/10 -
Walking8/10 -
Barbeque10/10 -
Camping10/10 -
Outdoor sports8/10
Santa Rosa 3-Day Forecast
More climate data for Santa Rosa
See the full Santa Rosa climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
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