Lake Arrowhead, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Arrowhead, a community in San Bernardino County, California.
Today
83°F
Sunny
Sunny, with a high near 83. South wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast for Lake Arrowhead
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 10 to 15 mph S | 0% |
| Tonight | 68°F | Clear | 5 to 15 mph S | 0% |
| Wednesday | 83°F | Sunny | 5 to 15 mph S | 1% |
| Wednesday Night | 68°F | Mostly Clear | 0 to 15 mph SE | 0% |
| Thursday | 83°F | Sunny | 0 to 5 mph S | 5% |
| Thursday Night | 68°F | Mostly Clear | 0 to 5 mph S | 5% |
| Friday | 84°F | Sunny | 0 to 5 mph S | 6% |
| Friday Night | 69°F | Mostly Clear | 0 to 5 mph S | 2% |
| Saturday | 85°F | Sunny | 0 to 5 mph S | 6% |
| Saturday Night | 69°F | Mostly Clear | 0 to 5 mph S | 3% |
| Sunday | 83°F | Sunny | 0 to 5 mph S | 6% |
| Sunday Night | 67°F | Mostly Clear | 5 mph S | 3% |
| Monday | 79°F | Sunny | 5 to 10 mph S | 10% |
| Monday Night | 64°F | Mostly Clear | 5 to 10 mph S | 3% |
Forecast source: National Weather Service (api.weather.gov) for Lake Arrowhead (34.254, -117.178). Updated through the day.
Growing snapshot for Lake Arrowhead
Last spring frost
May 5
First fall frost
Nov 2
Growing season
176 days
Hardiness zone
8b
More local growing data for Lake Arrowhead: nearby ZIP 92352 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
Lenwood
Loma Linda
Lucerne Valley
Lytle Creek
Mentone
Montclair
Morongo Valley
Mountain View Acres
Muscoy
Climate data from the nearest NOAA station, Lake Arrowhead, Ca (1.5 mi from Lake Arrowhead). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.