Mentone, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mentone, a community in San Bernardino County, California.
Today
99°F
Sunny
Sunny, with a high near 99. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast for Mentone
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 5 to 10 mph NW | 0% |
| Tonight | 67°F | Mostly Clear | 5 to 10 mph N | 0% |
| Wednesday | 97°F | Sunny | 5 to 10 mph NW | 1% |
| Wednesday Night | 68°F | Mostly Clear | 0 to 10 mph NW | 0% |
| Thursday | 98°F | Sunny | 0 to 10 mph W | 2% |
| Thursday Night | 69°F | Mostly Clear | 0 to 10 mph NW | 2% |
| Friday | 99°F | Sunny | 0 to 10 mph W | 1% |
| Friday Night | 69°F | Mostly Clear | 0 to 10 mph NW | 0% |
| Saturday | 101°F | Sunny | 0 to 10 mph W | 2% |
| Saturday Night | 70°F | Mostly Clear | 0 to 10 mph NW | 1% |
| Sunday | 100°F | Sunny | 0 to 10 mph W | 3% |
| Sunday Night | 68°F | Mostly Clear | 0 to 10 mph W | 2% |
| Monday | 96°F | Sunny | 0 to 10 mph SW | 7% |
| Monday Night | 65°F | Mostly Clear | 0 to 10 mph NW | 2% |
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 Aug 4, 2026.