Mentone, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mentone, a community in San Bernardino County, California.
Today
70°F
Mostly Sunny
Mostly sunny, with a high near 70. West wind around 5 mph.
7-day forecast for Mentone
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Mostly Sunny | 5 mph W | 0% |
| Tonight | 51°F | Mostly Clear | 0 to 5 mph E | 0% |
| Wednesday | 71°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 55°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Thursday | 75°F | Sunny | 0 to 5 mph E | 0% |
| Thursday Night | 54°F | Mostly Clear | 0 to 10 mph NE | 0% |
| Friday | 76°F | Sunny | 0 to 5 mph NE | 0% |
| Friday Night | 56°F | Clear | 0 to 15 mph NE | 0% |
| Saturday | 79°F | Sunny | 0 to 5 mph NE | 0% |
| Saturday Night | 58°F | Clear | 0 to 15 mph NE | 0% |
| Sunday | 80°F | Sunny | 0 to 5 mph E | 0% |
| Sunday Night | 59°F | Partly Cloudy | 0 to 15 mph NE | 0% |
| Monday | 78°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Monday Night | 58°F | Partly Cloudy | 0 to 5 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Mentone (34.061, -117.115). Updated through the day.
Growing snapshot for Mentone
Last spring frost
Jan 27
First fall frost
Dec 19
Growing season
329 days
Hardiness zone
10a
More local growing data for Mentone: nearby ZIP 92359 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Redlands, Ca (7.6 mi from Mentone). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.