San Jose, CA Weather & Growing Conditions
Today
98°F
Sunny
Sunny. High near 98, with temperatures falling to around 95 in the afternoon. West wind 2 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 98°F | Sunny | 2 to 6 mph W | 0% |
| Tonight | 62°F | Mostly Clear | 1 to 5 mph WSW | 0% |
| Wednesday | 95°F | Sunny | 1 to 6 mph WSW | 0% |
| Wednesday Night | 62°F | Clear | 0 to 6 mph W | 0% |
| Thursday | 94°F | Sunny | 0 to 7 mph WNW | 0% |
| Thursday Night | 64°F | Clear | 0 to 7 mph NW | 0% |
| Friday | 97°F | Sunny | 1 to 8 mph WNW | 0% |
| Friday Night | 66°F | Clear | 0 to 8 mph NW | 0% |
| Saturday | 97°F | Sunny | 0 to 9 mph WNW | 0% |
| Saturday Night | 66°F | Mostly Clear | 0 to 9 mph W | 0% |
| Sunday | 93°F | Sunny | 0 to 9 mph W | 0% |
| Sunday Night | 61°F | Mostly Clear | 3 to 9 mph SW | 0% |
| Monday | 88°F | Sunny | 3 to 9 mph SW | 0% |
| Monday Night | 58°F | Mostly Clear | 3 to 9 mph SW | 0% |
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
9b
Explore more for San Jose, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, San Jose, Ca (6.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.