Hidden Valley Lake, CA Weather & Growing Conditions
Overnight
64°F
Clear
Clear, with a low around 64. North northwest wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Clear | 1 mph NNW | 0% |
| Tuesday | 98°F | Sunny | 1 to 10 mph S | 0% |
| Tuesday Night | 64°F | Mostly Clear | 0 to 10 mph WNW | 0% |
| Wednesday | 95°F | Sunny | 0 to 9 mph SSE | 0% |
| Wednesday Night | 62°F | Clear | 1 to 9 mph WSW | 0% |
| Thursday | 96°F | Sunny | 1 to 8 mph SW | 0% |
| Thursday Night | 64°F | Clear | 1 to 8 mph W | 0% |
| Friday | 98°F | Sunny | 1 to 8 mph WSW | 0% |
| Friday Night | 67°F | Clear | 0 to 8 mph W | 0% |
| Saturday | 100°F | Sunny | 0 to 8 mph S | 0% |
| Saturday Night | 67°F | Clear | 2 to 8 mph W | 0% |
| Sunday | 97°F | Sunny | 2 to 9 mph NW | 0% |
| Sunday Night | 63°F | Clear | 0 to 9 mph WSW | 0% |
| Monday | 91°F | Sunny | 0 to 9 mph SE | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hidden Valley Lake, CA
Last spring frost
Apr 10
First fall frost
Nov 6
Growing season
209 days
Hardiness zone
9a
Explore more for Hidden Valley Lake, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Clearlake 4 Se, Ca (7.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.