Big Bear Lake, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Big Bear Lake, a city in San Bernardino County, California.
Tonight
50°F
Partly Cloudy
Partly cloudy, with a low around 50. East wind around 5 mph.
7-day forecast for Big Bear Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Partly Cloudy | 5 mph E | 0% |
| Sunday | 74°F | Mostly Sunny | 5 to 10 mph S | 0% |
| Sunday Night | 48°F | Mostly Clear | 5 mph SE | 1% |
| Monday | 69°F | Sunny | 0 to 10 mph S | 4% |
| Monday Night | 46°F | Mostly Clear | 0 to 5 mph W | 1% |
| Tuesday | 69°F | Sunny | 0 to 5 mph NW | 1% |
| Tuesday Night | 48°F | Clear | 0 to 5 mph SE | 0% |
| Wednesday | 74°F | Sunny | 5 to 10 mph SE | 0% |
| Wednesday Night | 49°F | Clear | 0 to 5 mph SE | 1% |
| Thursday | 76°F | Sunny | 5 to 15 mph S | 8% |
| Thursday Night | 50°F | Mostly Clear | 0 to 5 mph S | 4% |
| Friday | 74°F | Slight Chance Rain Showers | 0 to 10 mph SW | 15% |
| Friday Night | 50°F | Mostly Clear | 5 mph SW | 2% |
| Saturday | 73°F | Sunny | 5 to 15 mph SW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Big Bear Lake (34.243, -116.894). Updated through the day.
Growing snapshot for Big Bear Lake
Last spring frost
May 27
First fall frost
Oct 4
Growing season
131 days
Hardiness zone
7b
More local growing data for Big Bear Lake: nearby ZIP 92315 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
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Baker
Barstow
Big Bear City
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Fort Irwin
Grand Terrace
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Highland
Homestead Valley
Homewood Canyon
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Mountain View Acres
Muscoy
Climate data from the nearest NOAA station, Big Bear Lake, Ca (2.3 mi from Big Bear Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.