Milpitas, CA Weather & Growing Conditions

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

This Afternoon

78°F

Sunny

Sunny, with a high near 78. Northwest wind 8 to 12 mph, with gusts as high as 20 mph.

7-day forecast for Milpitas

When	Temp	Forecast	Wind	Precip
This Afternoon	78°F	Sunny	8 to 12 mph NW	0%
Tonight	57°F	Mostly Clear then Patchy Fog	1 to 10 mph NNW	0%
Saturday	82°F	Areas Of Fog then Mostly Sunny	0 to 9 mph WSW	0%
Saturday Night	57°F	Mostly Cloudy	2 to 7 mph WNW	0%
Sunday	76°F	Patchy Fog then Partly Sunny	2 to 7 mph W	2%
Sunday Night	56°F	Mostly Cloudy then Patchy Fog	2 to 7 mph W	2%
Monday	79°F	Patchy Fog then Mostly Sunny	1 to 8 mph WSW	0%
Monday Night	57°F	Mostly Clear	1 to 8 mph WSW	0%
Tuesday	82°F	Sunny	1 to 7 mph WSW	0%
Tuesday Night	59°F	Mostly Clear	0 to 7 mph W	0%
Wednesday	90°F	Sunny	0 to 7 mph NNW	0%
Wednesday Night	63°F	Mostly Clear	0 to 7 mph W	0%
Thursday	91°F	Sunny	0 to 9 mph WNW	0%
Thursday Night	63°F	Mostly Clear	1 to 9 mph W	0%

Forecast source: National Weather Service (api.weather.gov) for Milpitas (37.433, -121.891). Updated through the day.

Growing snapshot for Milpitas

Last spring frost

Jan 12

First fall frost

Dec 22

Growing season

347 days

Hardiness zone

10a

More local growing data for Milpitas: nearby ZIP 95035 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, San Jose, Ca (6.2 mi from Milpitas). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.