Spring Valley Lake, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Spring Valley Lake, a community in San Bernardino County, California.
Today
103°F
Sunny
Sunny, with a high near 103. Southwest wind 0 to 15 mph, with gusts as high as 30 mph.
7-day forecast for Spring Valley Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 103°F | Sunny | 0 to 15 mph SW | 0% |
| Tonight | 69°F | Mostly Clear | 5 to 15 mph S | 0% |
| Wednesday | 103°F | Sunny | 5 to 20 mph S | 1% |
| Wednesday Night | 70°F | Mostly Clear | 0 to 20 mph SW | 0% |
| Thursday | 103°F | Sunny | 0 to 15 mph SW | 2% |
| Thursday Night | 70°F | Mostly Clear | 0 to 15 mph S | 2% |
| Friday | 104°F | Sunny | 0 to 15 mph SW | 3% |
| Friday Night | 71°F | Mostly Clear | 0 to 15 mph S | 3% |
| Saturday | 104°F | Sunny | 0 to 15 mph SW | 8% |
| Saturday Night | 72°F | Mostly Clear | 5 to 15 mph S | 4% |
| Sunday | 102°F | Sunny | 0 to 20 mph SW | 6% |
| Sunday Night | 70°F | Mostly Clear | 5 to 20 mph S | 2% |
| Monday | 98°F | Sunny | 5 to 20 mph S | 9% |
| Monday Night | 66°F | Mostly Clear | 5 to 20 mph S | 4% |
Forecast source: National Weather Service (api.weather.gov) for Spring Valley Lake (34.497, -117.268). Updated through the day.
Growing snapshot for Spring Valley Lake
Last spring frost
Mar 18
First fall frost
Nov 11
Growing season
233 days
Hardiness zone
8b
More local growing data for Spring Valley Lake: nearby ZIP 92395 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Victorville, Ca (1.7 mi from Spring Valley Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.