Santa Rosa Valley, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Santa Rosa Valley, a community in Ventura County, California.

Today

82°F

Sunny

Sunny, with a high near 82. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.

7-day forecast for Santa Rosa Valley

When	Temp	Forecast	Wind	Precip
Today	82°F	Sunny	5 to 10 mph NNW	1%
Tonight	59°F	Patchy Fog	5 mph E	0%
Sunday	80°F	Patchy Fog then Partly Sunny	5 to 10 mph S	1%
Sunday Night	58°F	Mostly Cloudy	0 to 5 mph ESE	1%
Monday	74°F	Mostly Sunny	5 to 10 mph SSW	0%
Monday Night	57°F	Partly Cloudy	0 to 10 mph WNW	0%
Tuesday	75°F	Sunny	0 to 10 mph S	0%
Tuesday Night	59°F	Mostly Clear	0 to 10 mph N	0%
Wednesday	82°F	Sunny	0 to 10 mph SW	0%
Wednesday Night	61°F	Mostly Clear	0 to 10 mph E	0%
Thursday	82°F	Sunny	0 to 10 mph W	1%
Thursday Night	61°F	Mostly Clear	0 to 10 mph WSW	2%
Friday	82°F	Sunny	0 to 10 mph SSW	1%
Friday Night	61°F	Partly Cloudy	0 to 10 mph NW	0%

Forecast source: National Weather Service (api.weather.gov) for Santa Rosa Valley (34.246, -118.902). Updated through the day.

Growing snapshot for Santa Rosa Valley

Last spring frost

Dec 31

First fall frost

Dec 28

Growing season

365 days

Hardiness zone

10a

More local growing data for Santa Rosa Valley: nearby ZIP 91360 weather · frost dates · planting calendar · California frost dates

Nearby towns & communities

Camarillo Casa Conejo Channel Islands Beach El Rio Fillmore Frazier Park Lake of the Woods Lake Sherwood Meiners Oaks Mira Monte Moorpark Oak Park Oak View Ojai Oxnard Piru Port Hueneme San Buenaventura (Ventura) Santa Paula Saticoy Simi Valley Somis Thousand Oaks Westlake Village

All California locations ›

Climate data from the nearest NOAA station, Camarillo Ap, Ca (12 mi from Santa Rosa Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.