Harman US

Mountain House, CA Weather & Growing Conditions

This Afternoon
85°F
Sunny
Sunny, with a high near 85. West northwest wind around 9 mph, with gusts as high as 20 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 85°F Sunny 9 mph WNW 0%
Tonight 60°F Clear 12 to 21 mph WSW 0%
Saturday 90°F Sunny 7 to 13 mph W 0%
Saturday Night 61°F Mostly Cloudy 9 to 16 mph WSW 0%
Sunday 83°F Partly Sunny 9 to 14 mph W 1%
Sunday Night 60°F Mostly Cloudy 9 to 21 mph WSW 1%
Monday 86°F Sunny 12 to 20 mph W 0%
Monday Night 60°F Mostly Clear 13 mph WSW 0%
Tuesday 89°F Sunny 7 to 10 mph W 0%
Tuesday Night 63°F Clear 8 mph WSW 0%
Wednesday 95°F Sunny 6 mph NW 0%
Wednesday Night 68°F Mostly Clear 6 mph WSW 0%
Thursday 96°F Sunny 7 mph WNW 0%
Thursday Night 68°F Mostly Clear 7 to 10 mph WSW 0%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Mountain House, CA

Last spring frost
Jan 19
First fall frost
Dec 10
Growing season
330 days
Hardiness zone
9b

Explore more for Mountain House, CA: full frost dates · planting calendar · California frost dates

Climate data from the nearest NOAA station, Tracy Pumping Plt, Ca (1.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.