Spring Valley, CA Weather & Growing Conditions
Today
91°F
Sunny
Sunny, with a high near 91. Northwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Sunny | 5 mph NW | 0% |
| Tonight | 61°F | Partly Cloudy | 0 to 5 mph W | 0% |
| Sunday | 87°F | Partly Sunny | 0 to 6 mph ESE | 0% |
| Sunday Night | 61°F | Mostly Cloudy | 0 to 5 mph W | 0% |
| Monday | 91°F | Sunny | 0 to 8 mph S | 0% |
| Monday Night | 60°F | Mostly Clear | 0 to 8 mph W | 0% |
| Tuesday | 91°F | Sunny | 0 to 8 mph SSW | 0% |
| Tuesday Night | 61°F | Clear | 0 to 8 mph WNW | 0% |
| Wednesday | 92°F | Sunny | 0 to 6 mph ENE | 0% |
| Wednesday Night | 63°F | Mostly Clear | 0 to 6 mph WSW | 0% |
| Thursday | 92°F | Sunny | 0 to 8 mph S | 0% |
| Thursday Night | 61°F | Mostly Clear | 0 to 8 mph W | 0% |
| Friday | 87°F | Mostly Sunny | 0 to 8 mph WSW | 1% |
| Friday Night | 58°F | Partly Cloudy | 1 to 8 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Spring Valley, CA
Last spring frost
Apr 10
First fall frost
Nov 6
Growing season
209 days
Hardiness zone
9a
Explore more for Spring Valley, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Clearlake 4 Se, Ca (10.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.