Oak Glen, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oak Glen, a community in San Bernardino County, California.
This Afternoon
60°F
Sunny
Sunny, with a high near 60. Northwest wind around 5 mph.
7-day forecast for Oak Glen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Sunny | 5 mph NW | 0% |
| Tonight | 45°F | Mostly Clear | 5 to 10 mph N | 0% |
| Wednesday | 60°F | Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 51°F | Mostly Clear | 0 to 10 mph NE | 0% |
| Thursday | 62°F | Sunny | 0 to 10 mph N | 0% |
| Thursday Night | 52°F | Mostly Clear | 5 to 15 mph NE | 0% |
| Friday | 64°F | Sunny | 5 to 10 mph NE | 0% |
| Friday Night | 53°F | Clear | 5 to 15 mph NE | 0% |
| Saturday | 67°F | Sunny | 5 to 15 mph NE | 0% |
| Saturday Night | 55°F | Mostly Clear | 5 to 15 mph NE | 0% |
| Sunday | 68°F | Sunny | 5 to 15 mph E | 0% |
| Sunday Night | 57°F | Partly Cloudy | 5 to 15 mph E | 0% |
| Monday | 66°F | Mostly Sunny | 0 to 10 mph W | 0% |
| Monday Night | 55°F | Partly Cloudy | 0 to 5 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Oak Glen (34.041, -116.962). Updated through the day.
Growing snapshot for Oak Glen
Last spring frost
Jan 27
First fall frost
Dec 19
Growing season
329 days
Hardiness zone
9b
More local growing data for Oak Glen: nearby ZIP 92399 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Redlands, Ca (10.5 mi from Oak Glen). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.