Lake Forest, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Forest, a city in Orange County, California.
Overnight
61°F
Partly Cloudy
Partly cloudy, with a low around 61. East wind around 0 mph.
7-day forecast for Lake Forest
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Partly Cloudy | 0 mph | 2% |
| Saturday | 81°F | Sunny | 0 to 5 mph SW | 2% |
| Saturday Night | 63°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Sunday | 79°F | Partly Sunny | 0 to 5 mph W | 1% |
| Sunday Night | 63°F | Mostly Cloudy | 0 to 5 mph S | 1% |
| Monday | 77°F | Mostly Sunny | 5 mph S | 1% |
| Monday Night | 62°F | Mostly Cloudy | 0 to 5 mph S | 1% |
| Tuesday | 79°F | Mostly Sunny | 0 to 5 mph S | 1% |
| Tuesday Night | 63°F | Mostly Clear | 0 to 5 mph W | 0% |
| Wednesday | 84°F | Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 64°F | Mostly Clear | 0 to 5 mph W | 0% |
| Thursday | 86°F | Sunny | 0 to 5 mph W | 3% |
| Thursday Night | 65°F | Partly Cloudy | 0 to 5 mph W | 4% |
| Friday | 87°F | Sunny | 0 to 5 mph S | 4% |
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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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 Sep 19, 2026.