San Jose, CA Weather & Growing Conditions
Today
72°F
Sunny
Sunny. High near 72, with temperatures falling to around 70 in the afternoon. North wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Sunny | 3 mph N | 0% |
| Tonight | 57°F | Partly Cloudy | 3 mph NW | 0% |
| Sunday | 66°F | Partly Sunny | 2 mph W | 0% |
| Sunday Night | 56°F | Mostly Cloudy | 3 mph WNW | 0% |
| Monday | 67°F | Sunny | 3 mph WSW | 0% |
| Monday Night | 56°F | Partly Cloudy | 1 to 5 mph SW | 0% |
| Tuesday | 69°F | Sunny | 1 to 5 mph SW | 0% |
| Tuesday Night | 59°F | Mostly Clear | 2 mph SW | 0% |
| Wednesday | 78°F | Sunny | 2 mph WSW | 0% |
| Wednesday Night | 69°F | Mostly Clear | 2 mph NW | 0% |
| Thursday | 81°F | Sunny | 2 mph W | 0% |
| Thursday Night | 68°F | Mostly Clear | 3 mph WNW | 0% |
| Friday | 74°F | Sunny | 3 mph WSW | 0% |
| Friday Night | 61°F | Mostly Clear | 5 mph W | 2% |
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 Sep 19, 2026.