Santa Rosa, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Santa Rosa, a city in Sonoma County, California.

This Afternoon

82°F

Sunny

Sunny. High near 82, with temperatures falling to around 78 in the afternoon. Southwest wind around 7 mph.

7-day forecast for Santa Rosa

When	Temp	Forecast	Wind	Precip
This Afternoon	82°F	Sunny	7 mph SW	0%
Tonight	54°F	Mostly Clear then Patchy Fog	0 to 6 mph S	0%
Saturday	85°F	Patchy Fog then Sunny	0 to 6 mph SSW	0%
Saturday Night	54°F	Mostly Cloudy then Patchy Fog	0 to 3 mph S	0%
Sunday	80°F	Patchy Fog then Partly Sunny	0 to 5 mph SSW	0%
Sunday Night	53°F	Areas Of Fog	0 to 5 mph SW	0%
Monday	81°F	Areas Of Fog then Mostly Sunny	0 to 6 mph SW	0%
Monday Night	53°F	Areas Of Fog	0 to 6 mph W	0%
Tuesday	83°F	Areas Of Fog then Sunny	0 to 6 mph SW	0%
Tuesday Night	54°F	Mostly Clear	0 to 6 mph WNW	0%
Wednesday	91°F	Sunny	0 to 6 mph WSW	0%
Wednesday Night	57°F	Partly Cloudy	0 to 6 mph WNW	0%
Thursday	91°F	Mostly Sunny	0 to 6 mph SW	0%
Thursday Night	57°F	Partly Cloudy	0 to 6 mph WNW	0%

Forecast source: National Weather Service (api.weather.gov) for Santa Rosa (38.446, -122.706). Updated through the day.

Growing snapshot for Santa Rosa

Last spring frost

Feb 25

First fall frost

Dec 1

Growing season

279 days

Hardiness zone

More local growing data for Santa Rosa: nearby ZIP 95405 weather · frost dates · planting calendar · California frost dates

Nearby towns & communities

Bloomfield Bodega Bodega Bay Boyes Hot Springs Calistoga Carmet Cazadero Cloverdale Cotati El Verano Eldridge Fetters Hot Springs-Agua Caliente Forestville Fulton Geyserville Glen Ellen Graton Guerneville Healdsburg Jenner Kenwood Larkfield-Wikiup Monte Rio Occidental Penngrove Petaluma Rohnert Park Salmon Creek Sea Ranch Sebastopol

All California locations ›

Climate data from the nearest NOAA station, Santa Rosa, Ca (2.7 mi from Santa Rosa). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.