Hidden Valley Lake, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hidden Valley Lake, a community in Lake County, California.
Overnight
42°F
Patchy Fog
Patchy fog. Mostly cloudy, with a low around 42. Northwest wind 1 to 5 mph.
7-day forecast for Hidden Valley Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Patchy Fog | 1 to 5 mph NW | 6% |
| Wednesday | 67°F | Patchy Fog then Partly Sunny | 7 mph NW | 1% |
| Wednesday Night | 40°F | Partly Cloudy then Patchy Fog | 7 mph NNW | 0% |
| Thursday | 74°F | Patchy Fog then Sunny | 2 to 7 mph WNW | 0% |
| Thursday Night | 43°F | Mostly Clear | 0 to 6 mph WNW | 0% |
| Friday | 76°F | Sunny | 2 mph NW | 0% |
| Friday Night | 44°F | Mostly Clear | 1 mph WNW | 0% |
| Saturday | 76°F | Sunny | 0 to 3 mph ESE | 0% |
| Saturday Night | 42°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Sunday | 75°F | Mostly Sunny | 2 mph WNW | 0% |
| Sunday Night | 43°F | Partly Cloudy then Patchy Fog | 1 mph WNW | 0% |
| Monday | 72°F | Patchy Fog then Mostly Sunny | 0 to 3 mph W | 2% |
| Monday Night | 43°F | Partly Cloudy then Patchy Fog | 0 to 3 mph WNW | 4% |
| Tuesday | 72°F | Patchy Fog then Mostly Sunny | 0 to 3 mph WNW | 14% |
Forecast source: National Weather Service (api.weather.gov) for Hidden Valley Lake (38.801, -122.551). Updated through the day.
Growing snapshot for Hidden Valley Lake
Last spring frost
Apr 10
First fall frost
Nov 6
Growing season
209 days
Hardiness zone
9a
More local growing data for Hidden Valley Lake: nearby ZIP 95467 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Clearlake
Clearlake Oaks
Clearlake Riviera
Cobb
Kelseyville
Lakeport
Lower Lake
Lucerne
Middletown
Nice
North Lakeport
Soda Bay
Spring Valley
Upper Lake
Climate data from the nearest NOAA station, Clearlake 4 Se, Ca (7.7 mi from Hidden Valley Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.