Campbell, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Campbell, a city in Santa Clara County, California.

This Afternoon

81°F

Sunny

Sunny. High near 81, with temperatures falling to around 79 in the afternoon. North northwest wind around 12 mph, with gusts as high as 21 mph.

7-day forecast for Campbell

When	Temp	Forecast	Wind	Precip
This Afternoon	81°F	Sunny	12 mph NNW	0%
Tonight	55°F	Mostly Clear then Patchy Fog	1 to 10 mph WNW	0%
Saturday	85°F	Patchy Fog then Mostly Sunny	0 to 9 mph N	0%
Saturday Night	56°F	Mostly Cloudy	1 to 8 mph NW	0%
Sunday	80°F	Partly Sunny	1 to 8 mph WNW	2%
Sunday Night	56°F	Mostly Cloudy then Patchy Fog	1 to 8 mph WNW	2%
Monday	82°F	Patchy Fog then Mostly Sunny	1 to 7 mph WSW	0%
Monday Night	56°F	Mostly Clear	1 to 7 mph WSW	0%
Tuesday	86°F	Sunny	1 to 7 mph WSW	0%
Tuesday Night	58°F	Mostly Clear	0 to 7 mph W	0%
Wednesday	93°F	Sunny	0 to 7 mph NNW	0%
Wednesday Night	63°F	Mostly Clear	0 to 7 mph NNW	0%
Thursday	94°F	Sunny	0 to 8 mph NW	0%
Thursday Night	62°F	Mostly Clear	0 to 8 mph WNW	0%

Forecast source: National Weather Service (api.weather.gov) for Campbell (37.280, -121.953). Updated through the day.

Growing snapshot for Campbell

Last spring frost

Feb 2

First fall frost

Dec 6

Growing season

310 days

Hardiness zone

More local growing data for Campbell: nearby ZIP 95008 weather · frost dates · planting calendar · California frost dates

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All California locations ›

Climate data from the nearest NOAA station, Los Gatos, Ca (3.3 mi from Campbell). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.