San Jose, CA Weather & Growing Conditions
Today
85°F
Mostly Sunny
Mostly sunny. High near 85, with temperatures falling to around 83 in the afternoon. Northwest wind 2 to 12 mph, with gusts as high as 23 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 2 to 12 mph NW | 0% |
| Tonight | 59°F | Mostly Clear | 2 to 10 mph WNW | 0% |
| Wednesday | 83°F | Sunny | 2 to 10 mph WNW | 0% |
| Wednesday Night | 59°F | Mostly Clear | 1 to 10 mph WNW | 0% |
| Thursday | 82°F | Sunny | 1 to 10 mph WNW | 0% |
| Thursday Night | 60°F | Mostly Clear | 3 to 10 mph NW | 0% |
| Friday | 87°F | Sunny | 2 to 10 mph NW | 0% |
| Friday Night | 62°F | Mostly Clear | 2 to 10 mph WNW | 0% |
| Saturday | 85°F | Sunny | 2 to 12 mph WNW | 0% |
| Saturday Night | 63°F | Mostly Clear | 3 to 12 mph W | 0% |
| Sunday | 82°F | Sunny | 3 to 12 mph WNW | 0% |
| Sunday Night | 60°F | Mostly Clear | 5 to 12 mph W | 0% |
| Monday | 79°F | Sunny | 5 to 12 mph W | 0% |
| Monday Night | 58°F | Mostly Clear | 3 to 12 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Jose, CA
Last spring frost
Jan 6
First fall frost
Dec 23
Growing season
353 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, Moffett Federal Airfield, Ca (3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.