Highland, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Highland, a city in San Bernardino County, California.
Today
101°F
Sunny
Sunny, with a high near 101. West wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast for Highland
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 101°F | Sunny | 5 to 10 mph W | 0% |
| Tonight | 69°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Wednesday | 99°F | Sunny | 0 to 10 mph SW | 1% |
| Wednesday Night | 70°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Thursday | 101°F | Sunny | 0 to 10 mph SW | 3% |
| Thursday Night | 70°F | Mostly Clear | 0 to 5 mph S | 3% |
| Friday | 102°F | Sunny | 0 to 10 mph W | 2% |
| Friday Night | 71°F | Mostly Clear | 0 to 10 mph W | 1% |
| Saturday | 103°F | Sunny | 0 to 10 mph NW | 2% |
| Saturday Night | 71°F | Mostly Clear | 0 to 10 mph SW | 1% |
| Sunday | 102°F | Sunny | 0 to 10 mph SW | 4% |
| Sunday Night | 70°F | Mostly Clear | 0 to 10 mph SE | 2% |
| Monday | 98°F | Sunny | 0 to 10 mph SW | 8% |
| Monday Night | 67°F | Mostly Clear | 0 to 10 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Highland (34.113, -117.166). Updated through the day.
Growing snapshot for Highland
Last spring frost
Jan 27
First fall frost
Dec 19
Growing season
329 days
Hardiness zone
10a
More local growing data for Highland: nearby ZIP 92346 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Redlands, Ca (6.1 mi from Highland). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.