Fallbrook, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Fallbrook, a community in San Diego County, California.

This Afternoon

78°F

Sunny

Sunny, with a high near 78. Southwest wind around 10 mph, with gusts as high as 20 mph.

7-day forecast for Fallbrook

When	Temp	Forecast	Wind	Precip
This Afternoon	78°F	Sunny	10 mph SW	0%
Tonight	59°F	Partly Cloudy	0 to 10 mph SE	0%
Saturday	81°F	Sunny	0 to 10 mph SW	0%
Saturday Night	60°F	Partly Cloudy	0 to 5 mph E	0%
Sunday	79°F	Partly Sunny	0 to 10 mph SE	0%
Sunday Night	61°F	Mostly Cloudy	0 to 5 mph S	2%
Monday	77°F	Mostly Sunny	0 to 10 mph S	0%
Monday Night	59°F	Mostly Clear	0 to 10 mph E	0%
Tuesday	79°F	Sunny	0 to 10 mph W	0%
Tuesday Night	61°F	Mostly Clear	0 to 10 mph N	0%
Wednesday	86°F	Sunny	0 to 10 mph NW	4%
Wednesday Night	64°F	Mostly Clear	0 to 5 mph NW	3%
Thursday	87°F	Sunny	0 to 10 mph N	3%
Thursday Night	66°F	Mostly Clear	0 to 5 mph NW	1%

Forecast source: National Weather Service (api.weather.gov) for Fallbrook (33.374, -117.220). Updated through the day.

Growing snapshot for Fallbrook

Last spring frost

Feb 2

First fall frost

Jan 30

Growing season

365 days

Hardiness zone

10a

More local growing data for Fallbrook: nearby ZIP 92028 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, Fallbrook 5 Ne, Ca (4.2 mi from Fallbrook). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.