Fallbrook, CA Weather & Growing Conditions

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

Overnight

55°F

Patchy Fog

Patchy fog after 4am. Mostly clear, with a low around 55. Northeast wind around 5 mph.

7-day forecast for Fallbrook

When	Temp	Forecast	Wind	Precip
Overnight	55°F	Patchy Fog	5 mph NE	5%
Wednesday	74°F	Patchy Fog then Sunny	0 to 5 mph E	5%
Wednesday Night	55°F	Partly Cloudy	0 to 5 mph NE	0%
Thursday	79°F	Mostly Sunny	0 to 5 mph NW	0%
Thursday Night	56°F	Partly Cloudy	0 to 5 mph NE	0%
Friday	84°F	Sunny	0 to 5 mph N	0%
Friday Night	58°F	Clear	0 to 15 mph NE	0%
Saturday	85°F	Sunny	5 to 10 mph N	0%
Saturday Night	62°F	Mostly Clear	5 to 15 mph N	0%
Sunday	86°F	Sunny	0 to 10 mph NW	0%
Sunday Night	63°F	Mostly Clear	0 to 15 mph NE	0%
Monday	84°F	Sunny	0 to 5 mph NE	0%
Monday Night	61°F	Partly Cloudy	0 to 5 mph NW	1%
Tuesday	81°F	Mostly Sunny	0 to 5 mph NW	2%

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 Nov 4, 2026.