Lake Arrowhead, CA Weather & Growing Conditions
Overnight
57°F
Mostly Clear
Mostly clear, with a low around 57. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Mostly Clear | 5 mph NE | 0% |
| Saturday | 75°F | Sunny | 5 to 10 mph N | 0% |
| Saturday Night | 59°F | Mostly Clear | 5 to 10 mph S | 0% |
| Sunday | 74°F | Mostly Sunny | 0 to 15 mph SE | 0% |
| Sunday Night | 60°F | Partly Cloudy | 0 to 10 mph S | 3% |
| Monday | 67°F | Mostly Sunny | 5 mph S | 3% |
| Monday Night | 56°F | Mostly Clear | 0 to 5 mph S | 3% |
| Tuesday | 70°F | Sunny | 0 to 5 mph W | 1% |
| Tuesday Night | 60°F | Clear | 0 to 5 mph NE | 0% |
| Wednesday | 77°F | Sunny | 5 to 10 mph E | 3% |
| Wednesday Night | 62°F | Clear | 0 to 5 mph SE | 0% |
| Thursday | 78°F | Sunny | 5 mph SE | 5% |
| Thursday Night | 63°F | Mostly Clear | 5 mph S | 5% |
| Friday | 76°F | Sunny | 5 mph S | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lake Arrowhead, CA
Last spring frost
May 5
First fall frost
Nov 2
Growing season
176 days
Hardiness zone
8b
Explore more for Lake Arrowhead, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Lake Arrowhead, Ca (1.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.