Hidden Valley Lake, CA Weather & Growing Conditions
Overnight
41°F
Partly Cloudy
Partly cloudy, with a low around 41. Northwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 41°F | Partly Cloudy | 6 mph NW | 0% |
| Wednesday | 63°F | Mostly Sunny | 8 mph NNW | 2% |
| Wednesday Night | 42°F | Mostly Cloudy | 10 mph NNW | 2% |
| Thursday | 69°F | Sunny | 2 to 9 mph NNW | 0% |
| Thursday Night | 46°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Friday | 72°F | Sunny | 2 mph NW | 0% |
| Friday Night | 48°F | Mostly Clear | 2 mph N | 0% |
| Saturday | 71°F | Sunny | 3 mph E | 0% |
| Saturday Night | 46°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Sunday | 71°F | Mostly Sunny | 2 mph WNW | 0% |
| Sunday Night | 47°F | Partly Cloudy | 2 mph WNW | 0% |
| Monday | 67°F | Mostly Sunny | 0 to 3 mph WNW | 2% |
| Monday Night | 45°F | Partly Cloudy | 0 to 3 mph NW | 2% |
| Tuesday | 68°F | Sunny | 3 mph WNW | 12% |
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 Nov 4, 2026.