San Jose, CA Weather & Growing Conditions
Today
87°F
Sunny
Sunny. High near 87, with temperatures falling to around 85 in the afternoon. West northwest wind 2 to 12 mph, with gusts as high as 18 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 2 to 12 mph WNW | 0% |
| Tonight | 59°F | Mostly Clear | 2 to 10 mph WNW | 0% |
| Wednesday | 85°F | Sunny | 2 to 10 mph WNW | 0% |
| Wednesday Night | 60°F | Mostly Clear | 1 to 10 mph WNW | 0% |
| Thursday | 83°F | Sunny | 1 to 12 mph WNW | 0% |
| Thursday Night | 60°F | Mostly Clear | 2 to 12 mph NW | 0% |
| Friday | 88°F | Sunny | 2 to 10 mph WNW | 0% |
| Friday Night | 62°F | Mostly Clear | 2 to 10 mph WNW | 0% |
| Saturday | 87°F | Sunny | 2 to 12 mph WNW | 0% |
| Saturday Night | 63°F | Mostly Clear | 3 to 12 mph WNW | 0% |
| Sunday | 83°F | Sunny | 3 to 12 mph W | 0% |
| Sunday Night | 60°F | Mostly Clear | 5 to 12 mph W | 0% |
| Monday | 80°F | Sunny | 5 to 12 mph W | 0% |
| Monday Night | 58°F | Mostly Clear | 5 to 12 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Jose, CA
Last spring frost
Jan 12
First fall frost
Dec 22
Growing season
347 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 (5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.