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.

Today

73°F

Patchy Drizzle then Mostly Sunny

Patchy drizzle before 10am. Mostly sunny, with a high near 73. Northwest wind 5 to 10 mph.

7-day forecast for National City

When	Temp	Forecast	Wind	Precip
Today	73°F	Patchy Drizzle then Mostly Sunny	5 to 10 mph NW	8%
Tonight	58°F	Partly Cloudy	0 to 5 mph NE	0%
Thursday	77°F	Mostly Sunny	0 to 10 mph W	0%
Thursday Night	58°F	Partly Cloudy	5 mph NE	0%
Friday	81°F	Sunny	0 to 10 mph N	0%
Friday Night	61°F	Mostly Clear	5 mph NE	0%
Saturday	84°F	Sunny	0 to 5 mph NE	0%
Saturday Night	64°F	Mostly Clear	5 to 10 mph NE	0%
Sunday	86°F	Sunny	5 mph NE	0%
Sunday Night	66°F	Partly Cloudy	5 mph NE	0%
Monday	84°F	Mostly Sunny	0 to 5 mph NE	0%
Monday Night	64°F	Partly Cloudy	0 to 5 mph NE	0%
Tuesday	80°F	Mostly Sunny	0 to 5 mph W	2%
Tuesday Night	63°F	Partly Cloudy	0 to 5 mph N	6%

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

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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 Nov 4, 2026.