Mount Hermon, CA Weather & Growing Conditions
Overnight
53°F
Haze
Haze. Mostly cloudy, with a low around 53. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Haze | 0 mph | 0% |
| Tuesday | 84°F | Haze then Mostly Sunny | 0 to 3 mph SSE | 0% |
| Tuesday Night | 54°F | Partly Cloudy then Patchy Fog | 1 mph E | 0% |
| Wednesday | 84°F | Mostly Sunny | 2 mph SSW | 0% |
| Wednesday Night | 55°F | Partly Cloudy | 1 mph WNW | 0% |
| Thursday | 86°F | Sunny | 2 mph W | 0% |
| Thursday Night | 58°F | Mostly Clear | 2 mph NW | 0% |
| Friday | 92°F | Sunny | 0 to 3 mph WNW | 0% |
| Friday Night | 58°F | Mostly Clear | 2 mph NW | 0% |
| Saturday | 89°F | Sunny | 2 mph WNW | 0% |
| Saturday Night | 58°F | Mostly Clear | 2 mph NW | 0% |
| Sunday | 87°F | Sunny | 0 to 3 mph WNW | 0% |
| Sunday Night | 55°F | Mostly Clear then Areas Of Fog | 0 to 3 mph WNW | 0% |
| Monday | 81°F | Patchy Fog then Sunny | 0 to 3 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mount Hermon, CA
Last spring frost
Mar 25
First fall frost
Nov 11
Growing season
231 days
Hardiness zone
9a
Explore more for Mount Hermon, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Ben Lomond #4, Ca (2.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.