Lake Forest, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Forest, a city in Orange County, California.
Tonight
56°F
Mostly Clear
Mostly clear, with a low around 56. Northeast wind around 5 mph.
7-day forecast for Lake Forest
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Mostly Clear | 5 mph NE | 0% |
| Wednesday | 74°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 57°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Thursday | 78°F | Sunny | 0 to 5 mph SW | 0% |
| Thursday Night | 59°F | Mostly Clear | 0 to 5 mph N | 0% |
| Friday | 83°F | Sunny | 5 mph N | 0% |
| Friday Night | 61°F | Clear | 5 to 10 mph N | 0% |
| Saturday | 86°F | Sunny | 0 to 10 mph N | 0% |
| Saturday Night | 63°F | Mostly Clear | 0 to 10 mph NE | 0% |
| Sunday | 86°F | Sunny | 0 to 5 mph NE | 0% |
| Sunday Night | 65°F | Partly Cloudy | 0 to 5 mph NW | 0% |
| Monday | 83°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Monday Night | 62°F | Partly Cloudy | 0 mph | 1% |
| Tuesday | 80°F | Mostly Sunny | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Lake Forest (33.655, -117.676). Updated through the day.
Growing snapshot for Lake Forest
Last spring frost
Jan 5
First fall frost
Dec 25
Growing season
365 days
Hardiness zone
10b
More local growing data for Lake Forest: nearby ZIP 92630 weather · frost dates · planting calendar · California frost dates
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Laguna Beach
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Placentia
Climate data from the nearest NOAA station, Tustin Irvine Rch, Ca (5.6 mi from Lake Forest). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.