Harmony Grove, CA Weather & Growing Conditions

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

Tonight

56°F

Partly Cloudy

Partly cloudy, with a low around 56. North wind 0 to 10 mph.

7-day forecast for Harmony Grove

When	Temp	Forecast	Wind	Precip
Tonight	56°F	Partly Cloudy	0 to 10 mph N	9%
Wednesday	72°F	Sunny	0 to 10 mph S	0%
Wednesday Night	54°F	Mostly Clear	0 to 5 mph NE	0%
Thursday	76°F	Sunny	0 to 5 mph SW	0%
Thursday Night	56°F	Mostly Clear	0 to 5 mph N	0%
Friday	80°F	Sunny	0 to 5 mph N	0%
Friday Night	57°F	Clear	5 to 10 mph NE	0%
Saturday	84°F	Sunny	0 to 5 mph N	0%
Saturday Night	60°F	Mostly Clear	5 to 10 mph NE	0%
Sunday	85°F	Sunny	5 to 10 mph NW	0%
Sunday Night	62°F	Partly Cloudy	5 to 10 mph NE	0%
Monday	82°F	Mostly Sunny	0 to 5 mph S	0%
Monday Night	60°F	Partly Cloudy	0 to 5 mph N	1%
Tuesday	79°F	Mostly Sunny	0 to 5 mph W	2%

Forecast source: National Weather Service (api.weather.gov) for Harmony Grove (33.101, -117.138). Updated through the day.

Growing snapshot for Harmony Grove

Last spring frost

Jan 2

First fall frost

Dec 30

Growing season

365 days

Hardiness zone

10a

More local growing data for Harmony Grove: nearby ZIP 92029 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, Escondido #2, Ca (3.2 mi from Harmony Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.