Lake Forest, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Lake Forest, a city in Orange County, California.

Today

86°F

Patchy Fog then Sunny

Patchy fog before 11am. Sunny, with a high near 86. Southwest wind 5 to 10 mph.

7-day forecast for Lake Forest

When	Temp	Forecast	Wind	Precip
Today	86°F	Patchy Fog then Sunny	5 to 10 mph SW	1%
Tonight	65°F	Patchy Fog	0 to 5 mph SW	1%
Wednesday	86°F	Patchy Fog then Mostly Sunny	0 to 10 mph SW	0%
Wednesday Night	65°F	Partly Cloudy then Patchy Fog	0 to 5 mph SW	0%
Thursday	89°F	Patchy Fog then Sunny	0 to 5 mph SW	1%
Thursday Night	66°F	Patchy Fog	0 to 5 mph S	1%
Friday	89°F	Patchy Fog then Sunny	0 to 5 mph S	0%
Friday Night	66°F	Partly Cloudy	0 to 5 mph S	0%
Saturday	90°F	Sunny	0 to 5 mph SW	0%
Saturday Night	66°F	Mostly Clear	0 to 5 mph S	0%
Sunday	89°F	Sunny	0 to 5 mph S	0%
Sunday Night	66°F	Partly Cloudy	0 to 5 mph S	2%
Monday	87°F	Mostly Sunny	0 to 5 mph S	2%
Monday Night	65°F	Mostly Clear	0 to 5 mph S	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

Nearby towns & communities

Aliso Viejo Anaheim Brea Buena Park Costa Mesa Coto de Caza Cypress Dana Point Fountain Valley Fullerton Garden Grove Huntington Beach Irvine La Habra La Habra Heights La Palma Ladera Ranch Laguna Beach Laguna Hills Laguna Niguel Laguna Woods Las Flores Los Alamitos Midway City Mission Viejo Modjeska Newport Beach North Tustin Orange Placentia

All California locations ›

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 Aug 4, 2026.