Mount Hermon, CA Weather & Growing Conditions
This Afternoon
82°F
Sunny
Sunny. High near 82, with temperatures falling to around 80 in the afternoon. Northwest wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Sunny | 7 mph NW | 0% |
| Tonight | 53°F | Mostly Clear then Patchy Fog | 1 to 5 mph N | 0% |
| Saturday | 82°F | Areas Of Fog then Mostly Sunny | 0 to 5 mph SE | 0% |
| Saturday Night | 54°F | Mostly Cloudy | 3 mph NW | 0% |
| Sunday | 77°F | Patchy Fog then Partly Sunny | 1 to 5 mph NW | 2% |
| Sunday Night | 53°F | Patchy Fog | 0 to 5 mph NW | 2% |
| Monday | 76°F | Areas Of Fog then Mostly Sunny | 0 to 3 mph W | 0% |
| Monday Night | 52°F | Patchy Fog | 0 to 3 mph NW | 0% |
| Tuesday | 81°F | Areas Of Fog then Mostly Sunny | 0 to 3 mph W | 0% |
| Tuesday Night | 54°F | Mostly Clear | 2 mph NW | 0% |
| Wednesday | 90°F | Sunny | 2 mph WNW | 0% |
| Wednesday Night | 59°F | Mostly Clear | 2 mph NW | 0% |
| Thursday | 92°F | Sunny | 2 mph W | 0% |
| Thursday Night | 58°F | Partly Cloudy | 2 mph NW | 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 Sep 19, 2026.