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
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.