Lake Arrowhead, CA Weather & Growing Conditions
Overnight
41°F
Clear
Clear, with a low around 41. Southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 41°F | Clear | 5 mph SE | 1% |
| Wednesday | 56°F | Sunny | 0 to 5 mph N | 1% |
| Wednesday Night | 42°F | Mostly Clear | 5 to 10 mph N | 0% |
| Thursday | 59°F | Mostly Sunny | 0 to 10 mph N | 0% |
| Thursday Night | 45°F | Partly Cloudy | 5 to 15 mph NE | 0% |
| Friday | 61°F | Sunny | 5 to 15 mph N | 0% |
| Friday Night | 45°F | Clear | 10 to 15 mph NE | 0% |
| Saturday | 63°F | Sunny | 0 to 15 mph NE | 0% |
| Saturday Night | 46°F | Clear | 0 to 10 mph NE | 0% |
| Sunday | 64°F | Sunny | 0 to 10 mph NE | 0% |
| Sunday Night | 48°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Monday | 63°F | Sunny | 0 to 5 mph NE | 0% |
| Monday Night | 47°F | Partly Cloudy | 0 to 5 mph SE | 0% |
| Tuesday | 61°F | Sunny | 0 to 5 mph SE | 4% |
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 Nov 4, 2026.