Mountain House, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mountain House, a community in Alameda County, California.
Today
100°F
Sunny
Sunny, with a high near 100. West wind 6 to 12 mph, with gusts as high as 21 mph.
7-day forecast for Mountain House
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 100°F | Sunny | 6 to 12 mph W | 0% |
| Tonight | 66°F | Clear | 3 to 12 mph W | 0% |
| Wednesday | 99°F | Sunny | 3 to 9 mph WNW | 0% |
| Wednesday Night | 66°F | Clear | 5 to 12 mph W | 0% |
| Thursday | 99°F | Sunny | 5 to 12 mph WNW | 0% |
| Thursday Night | 67°F | Clear | 6 to 12 mph W | 0% |
| Friday | 100°F | Sunny | 6 to 13 mph WNW | 0% |
| Friday Night | 70°F | Clear | 6 to 13 mph W | 0% |
| Saturday | 102°F | Sunny | 6 to 13 mph WNW | 0% |
| Saturday Night | 71°F | Clear | 8 to 13 mph WSW | 0% |
| Sunday | 97°F | Sunny | 8 to 15 mph W | 0% |
| Sunday Night | 66°F | Clear | 13 to 16 mph WSW | 0% |
| Monday | 92°F | Sunny | 8 to 15 mph W | 0% |
| Monday Night | 62°F | Mostly Clear | 7 to 15 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Mountain House (37.767, -121.545). Updated through the day.
Growing snapshot for Mountain House
Last spring frost
Jan 19
First fall frost
Dec 10
Growing season
330 days
Hardiness zone
9b
More local growing data for Mountain House: nearby ZIP 95391 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Alameda
Albany
Ashland
Berkeley
Camino Tassajara
Castro Valley
Cherryland
Dublin
Emeryville
Fairview
Fremont
Hayward
Kensington
Livermore
Newark
Oakland
Piedmont
Pleasanton
San Leandro
San Lorenzo
Sunol
Union City
Climate data from the nearest NOAA station, Tracy Pumping Plt, Ca (1.3 mi from Mountain House). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.