See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
22°
Mostly Cloudy
Feels Like: 22°
Min: 22°
Max: 30°
The next few hours will be mostly cloudy, with today reaching 30°C and dropping to 21°C. The coming days will be partly cloudy from afternoon until night.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:14
Sunrise
18:12
Sunset
Moon
Waxing Crescent
09:20
Moonrise
21:17
Moonset
Daily Forecast
Today
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
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Weather in Santa Rosa today, September 15, 2026
Expect a muted, overcast feel in Santa Rosa on September 15, 2026 as cloud persists. Brighter breaks, if they arrive, should stay brief. Expect a grey start, with morning cloud around 77% by 07:00. Outdoor plans early on should not rely on bright skies.
The day peaks near 30°C and cools toward 22°C. Relative humidity sits between 51% and 84%, reaching its peak around 04:00. Airflow remains manageable, reaching about 5.2 km/h around 16:00.
The afternoon keeps an overcast feel, as cloud reaches about 75% around 12:00. Outdoor plans may still want a flexible backup. Visibility stays near 16.1 km. The sun rises at 06:14 and sets at 18:12, for a total of 11 hours 57 minutes of sunlight today.
Taken together, overcast skies in Santa Rosa on September 15, 2026 favour indoor or covered options, with temperatures near 30°C.
Frequently asked questions about weather in Santa Rosa
How warm does it get in Santa Rosa?
The warmest month in Santa Rosa is February, with average high temperatures of 32°C. The average temperature during this period is around 27°C.
How cold does it get in Santa Rosa?
The coldest month in Santa Rosa is September, with average low temperatures of 16°C. The average temperature during this period is around 20°C.
What is the wettest time of year in Santa Rosa?
The wettest month in Santa Rosa is March, with an average of 86mm of precipitation.
What is the driest time of year in Santa Rosa?
The driest month in Santa Rosa is September, with an average of 1mm of precipitation.
