Hidden Valley Lake, CA Weather & Growing Conditions
Tonight
53°F
Mostly Clear
Mostly clear, with a low around 53. West wind 2 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Mostly Clear | 2 to 8 mph W | 0% |
| Saturday | 91°F | Sunny | 2 to 12 mph W | 0% |
| Saturday Night | 54°F | Partly Cloudy | 1 to 12 mph W | 0% |
| Sunday | 86°F | Partly Sunny | 1 to 6 mph SW | 0% |
| Sunday Night | 53°F | Partly Cloudy | 0 to 6 mph SW | 0% |
| Monday | 88°F | Mostly Sunny | 0 to 8 mph SSW | 0% |
| Monday Night | 52°F | Mostly Clear | 0 to 8 mph WNW | 0% |
| Tuesday | 91°F | Sunny | 0 to 7 mph WSW | 0% |
| Tuesday Night | 55°F | Clear | 0 to 7 mph WNW | 0% |
| Wednesday | 94°F | Sunny | 0 to 7 mph ENE | 0% |
| Wednesday Night | 57°F | Mostly Clear | 0 to 7 mph WNW | 0% |
| Thursday | 94°F | Sunny | 0 to 9 mph SSW | 0% |
| Thursday Night | 56°F | Mostly Clear | 0 to 9 mph W | 0% |
| Friday | 89°F | Mostly Sunny | 0 to 9 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hidden Valley Lake, CA
Last spring frost
Mar 2
First fall frost
Nov 23
Growing season
263 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, Calistoga, Ca (11.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.