Hidden Valley Lake, CA Weather & Growing Conditions
Today
99°F
Sunny
Sunny, with a high near 99. South southeast wind 0 to 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 0 to 12 mph SSE | 0% |
| Tonight | 57°F | Mostly Clear | 0 to 12 mph W | 0% |
| Wednesday | 96°F | Sunny | 0 to 9 mph S | 0% |
| Wednesday Night | 55°F | Clear | 0 to 9 mph WNW | 0% |
| Thursday | 97°F | Sunny | 0 to 8 mph SW | 0% |
| Thursday Night | 57°F | Clear | 0 to 8 mph W | 0% |
| Friday | 99°F | Sunny | 0 to 8 mph WSW | 0% |
| Friday Night | 61°F | Clear | 0 to 8 mph W | 0% |
| Saturday | 101°F | Sunny | 0 to 9 mph SSW | 0% |
| Saturday Night | 61°F | Mostly Clear | 0 to 9 mph W | 0% |
| Sunday | 98°F | Sunny | 0 to 10 mph S | 0% |
| Sunday Night | 57°F | Clear | 0 to 10 mph WSW | 0% |
| Monday | 92°F | Sunny | 0 to 9 mph SSE | 0% |
| Monday Night | 52°F | Mostly Clear | 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 Aug 4, 2026.