Poway, CA Weather & Growing Conditions

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

Overnight

64°F

Patchy Fog

Patchy fog. Partly cloudy, with a low around 64. South wind around 0 mph.

7-day forecast for Poway

When	Temp	Forecast	Wind	Precip
Overnight	64°F	Patchy Fog	0 mph	0%
Tuesday	85°F	Patchy Fog then Sunny	0 to 10 mph SW	0%
Tuesday Night	64°F	Patchy Fog	0 to 5 mph W	0%
Wednesday	85°F	Patchy Fog then Sunny	0 to 10 mph W	1%
Wednesday Night	64°F	Mostly Clear then Patchy Fog	0 to 5 mph SW	0%
Thursday	87°F	Patchy Fog then Sunny	0 to 10 mph SW	1%
Thursday Night	65°F	Mostly Clear	0 to 5 mph W	1%
Friday	88°F	Sunny	0 to 10 mph W	1%
Friday Night	65°F	Mostly Clear	0 to 5 mph SW	0%
Saturday	89°F	Sunny	0 to 10 mph SW	0%
Saturday Night	65°F	Mostly Clear	0 to 5 mph SW	0%
Sunday	88°F	Sunny	0 to 10 mph SW	2%
Sunday Night	65°F	Mostly Clear	0 to 5 mph SW	3%
Monday	87°F	Sunny	0 to 10 mph SW	5%

Forecast source: National Weather Service (api.weather.gov) for Poway (32.988, -117.022). Updated through the day.

Growing snapshot for Poway

Last spring frost

Jan 5

First fall frost

Jan 2

Growing season

365 days

Hardiness zone

10a

More local growing data for Poway: nearby ZIP 92064 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, Rancho Bernardo, Ca (4.7 mi from Poway). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.