San Jose, CA Weather & Growing Conditions
Today
68°F
Sunny
Sunny. High near 68, with temperatures falling to around 64 in the afternoon. Northwest wind 7 to 13 mph, with gusts as high as 23 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Sunny | 7 to 13 mph NW | 0% |
| Tonight | 48°F | Mostly Cloudy | 5 to 10 mph NNW | 1% |
| Thursday | 72°F | Sunny | 5 to 8 mph NNW | 0% |
| Thursday Night | 48°F | Mostly Clear | 7 mph N | 0% |
| Friday | 74°F | Sunny | 3 to 7 mph N | 0% |
| Friday Night | 49°F | Mostly Clear | 3 to 7 mph NNE | 0% |
| Saturday | 79°F | Sunny | 2 to 7 mph NE | 0% |
| Saturday Night | 50°F | Mostly Clear | 5 mph N | 0% |
| Sunday | 77°F | Sunny | 5 mph NNW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 5 mph NNW | 0% |
| Monday | 74°F | Mostly Sunny | 3 to 7 mph NW | 0% |
| Monday Night | 50°F | Partly Cloudy | 3 to 7 mph NNW | 0% |
| Tuesday | 75°F | Sunny | 2 to 6 mph NNW | 1% |
| Tuesday Night | 51°F | Mostly Clear | 6 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Jose, CA
Last spring frost
May 3
First fall frost
Nov 18
Growing season
197 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, Mt Hamilton, Ca (10.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.