National City, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for National City, a city in San Diego County, California.

Tonight

64°F

Partly Cloudy

Partly cloudy, with a low around 64. North wind 0 to 10 mph.

7-day forecast for National City

When	Temp	Forecast	Wind	Precip
Tonight	64°F	Partly Cloudy	0 to 10 mph N	2%
Saturday	73°F	Mostly Sunny	0 to 10 mph N	0%
Saturday Night	65°F	Mostly Cloudy	0 to 5 mph NE	0%
Sunday	72°F	Partly Sunny	0 to 10 mph NW	0%
Sunday Night	67°F	Mostly Cloudy	0 to 5 mph W	2%
Monday	72°F	Mostly Sunny	0 to 10 mph SW	2%
Monday Night	66°F	Partly Cloudy	5 to 10 mph NW	1%
Tuesday	72°F	Mostly Sunny	5 to 10 mph NW	0%
Tuesday Night	67°F	Partly Cloudy	0 to 10 mph NW	0%
Wednesday	77°F	Mostly Sunny	0 to 10 mph NW	1%
Wednesday Night	68°F	Partly Cloudy	0 to 10 mph NW	3%
Thursday	78°F	Mostly Sunny	0 to 10 mph W	2%
Thursday Night	70°F	Partly Cloudy	5 mph NW	1%
Friday	81°F	Mostly Sunny	5 to 10 mph NW	4%

Forecast source: National Weather Service (api.weather.gov) for National City (32.666, -117.097). Updated through the day.

Growing snapshot for National City

Growing season

365 days

Hardiness zone

10b

More local growing data for National City: nearby ZIP 91950 weather · frost dates · planting calendar · California frost dates

Nearby towns & communities

Alpine Bonita Bonsall Borrego Springs Bostonia Boulevard Camp Pendleton Mainside Camp Pendleton South Campo Carlsbad Casa de Oro-Mount Helix Chula Vista Coronado Crest Del Dios Del Mar Descanso El Cajon Elfin Forest Encinitas Escondido Eucalyptus Hills Fairbanks Ranch Fallbrook Granite Hills Harbison Canyon Harmony Grove Hidden Meadows Imperial Beach Jacumba

All California locations ›

Climate data from the nearest NOAA station, Chula Vista, Ca (2.1 mi from National City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.