San Jose, CA Weather & Growing Conditions
Today
54°F
Sunny
Sunny. High near 54, with temperatures falling to around 51 in the afternoon. North wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 54°F | Sunny | 7 mph N | 1% |
| Tonight | 46°F | Mostly Cloudy | 8 mph N | 1% |
| Thursday | 58°F | Sunny | 5 mph N | 0% |
| Thursday Night | 49°F | Mostly Clear | 3 mph N | 0% |
| Friday | 61°F | Sunny | 3 mph N | 0% |
| Friday Night | 53°F | Mostly Clear | 5 mph NNE | 0% |
| Saturday | 66°F | Sunny | 0 to 3 mph NE | 0% |
| Saturday Night | 52°F | Mostly Clear | 0 to 6 mph N | 0% |
| Sunday | 64°F | Sunny | 1 to 6 mph N | 0% |
| Sunday Night | 54°F | Partly Cloudy | 3 mph NNW | 0% |
| Monday | 61°F | Mostly Sunny | 5 mph NNW | 0% |
| Monday Night | 53°F | Partly Cloudy | 5 mph NNW | 0% |
| Tuesday | 61°F | Sunny | 1 to 5 mph NNW | 1% |
| Tuesday Night | 54°F | Mostly Clear | 1 to 6 mph N | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Jose, CA
Last spring frost
Feb 2
First fall frost
Dec 6
Growing season
310 days
Hardiness zone
9b
Explore more for San Jose, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Los Gatos, Ca (4.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.