Brea, CA Weather & Growing Conditions

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

Overnight

65°F

Patchy Fog

Patchy fog. Mostly cloudy, with a low around 65. Southwest wind around 0 mph.

7-day forecast for Brea

When	Temp	Forecast	Wind	Precip
Overnight	65°F	Patchy Fog	0 mph	0%
Tuesday	87°F	Patchy Fog then Sunny	0 to 10 mph SW	0%
Tuesday Night	65°F	Partly Cloudy then Patchy Fog	0 to 10 mph SW	0%
Wednesday	87°F	Patchy Fog then Sunny	0 to 10 mph SW	0%
Wednesday Night	66°F	Mostly Clear then Patchy Fog	0 to 10 mph SW	0%
Thursday	89°F	Patchy Fog then Sunny	0 to 10 mph SW	1%
Thursday Night	66°F	Mostly Clear then Patchy Fog	0 to 10 mph SW	1%
Friday	88°F	Patchy Fog then Sunny	0 to 10 mph SW	0%
Friday Night	67°F	Mostly Clear	0 to 10 mph SW	0%
Saturday	90°F	Sunny	0 to 10 mph SW	0%
Saturday Night	67°F	Mostly Clear	0 to 10 mph SW	0%
Sunday	89°F	Sunny	0 to 10 mph SW	0%
Sunday Night	66°F	Mostly Clear	0 to 10 mph SW	1%
Monday	87°F	Sunny	0 to 10 mph SW	1%

Forecast source: National Weather Service (api.weather.gov) for Brea (33.925, -117.865). Updated through the day.

Growing snapshot for Brea

Growing season

365 days

Hardiness zone

10a

More local growing data for Brea: nearby ZIP 92821 weather · frost dates · planting calendar · California frost dates

Nearby towns & communities

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Climate data from the nearest NOAA station, Anaheim, Ca (4.7 mi from Brea). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.