San Jose, CA Weather & Growing Conditions
Tonight
48°F
Chance Light Rain
A chance of rain before 4am. Partly cloudy, with a low around 48. North northwest wind 2 to 7 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Chance Light Rain | 2 to 7 mph NNW | 25% |
| Wednesday | 68°F | Patchy Fog then Sunny | 2 to 10 mph W | 1% |
| Wednesday Night | 48°F | Mostly Cloudy then Patchy Fog | 1 to 8 mph SSE | 1% |
| Thursday | 72°F | Patchy Fog then Mostly Sunny | 2 to 7 mph NNW | 0% |
| Thursday Night | 46°F | Clear | 2 to 6 mph NNE | 0% |
| Friday | 75°F | Sunny | 1 to 6 mph NNE | 0% |
| Friday Night | 49°F | Mostly Clear | 1 to 6 mph N | 0% |
| Saturday | 77°F | Sunny | 2 mph NNE | 0% |
| Saturday Night | 50°F | Mostly Clear | 0 to 5 mph N | 0% |
| Sunday | 76°F | Mostly Sunny | 0 to 6 mph N | 0% |
| Sunday Night | 51°F | Partly Cloudy | 0 to 6 mph N | 0% |
| Monday | 74°F | Mostly Sunny | 0 to 8 mph NNW | 1% |
| Monday Night | 49°F | Partly Cloudy | 0 to 8 mph NNE | 2% |
| Tuesday | 74°F | Sunny | 0 to 6 mph N | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Jose, CA
Last spring frost
Jan 2
First fall frost
Dec 25
Growing season
362 days
Hardiness zone
10a
Explore more for San Jose, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, San Jose, Ca (0.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.