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
73°F
Sunny
Sunny, with a high near 73. West wind around 10 mph.
7-day forecast for Oak Glen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Sunny | 10 mph W | 1% |
| Tonight | 60°F | Mostly Clear | 5 to 10 mph NW | 1% |
| Saturday | 78°F | Sunny | 0 to 10 mph W | 0% |
| Saturday Night | 63°F | Mostly Clear | 0 to 5 mph N | 0% |
| Sunday | 77°F | Mostly Sunny | 0 to 5 mph S | 0% |
| Sunday Night | 62°F | Partly Cloudy | 0 to 5 mph W | 1% |
| Monday | 71°F | Sunny | 0 to 10 mph W | 1% |
| Monday Night | 59°F | Mostly Clear | 5 to 10 mph NW | 1% |
| Tuesday | 75°F | Sunny | 5 mph W | 1% |
| Tuesday Night | 61°F | Clear | 0 to 10 mph N | 2% |
| Wednesday | 81°F | Sunny | 5 to 10 mph SE | 3% |
| Wednesday Night | 66°F | Mostly Clear | 0 to 10 mph E | 2% |
| Thursday | 82°F | Sunny | 5 to 15 mph SE | 8% |
| Thursday Night | 67°F | Mostly Clear | 5 to 10 mph NE | 4% |
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
Nearby towns & communities
Adelanto
Apple Valley
Baker
Barstow
Big Bear City
Big Bear Lake
Big River
Bloomington
Bluewater
Chino
Chino Hills
Colton
Crestline
Fontana
Fort Irwin
Grand Terrace
Hesperia
Highland
Homestead Valley
Homewood Canyon
Joshua Tree
Lake Arrowhead
Lenwood
Loma Linda
Lucerne Valley
Lytle Creek
Mentone
Montclair
Morongo Valley
Mountain View Acres
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 Sep 19, 2026.