San Jose, CA Weather & Growing Conditions
Today
84°F
Sunny
Sunny. High near 84, with temperatures falling to around 80 in the afternoon. West wind 1 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 1 to 8 mph W | 0% |
| Tonight | 56°F | Partly Cloudy | 0 to 6 mph NW | 0% |
| Sunday | 78°F | Mostly Cloudy | 1 to 6 mph WNW | 0% |
| Sunday Night | 54°F | Mostly Cloudy | 3 mph WSW | 0% |
| Monday | 80°F | Mostly Sunny | 2 to 6 mph WSW | 0% |
| Monday Night | 55°F | Mostly Clear | 1 to 6 mph WSW | 0% |
| Tuesday | 81°F | Sunny | 2 to 6 mph WSW | 0% |
| Tuesday Night | 58°F | Mostly Clear | 0 to 6 mph WSW | 0% |
| Wednesday | 89°F | Sunny | 0 to 6 mph WNW | 0% |
| Wednesday Night | 63°F | Mostly Clear | 0 to 6 mph WNW | 0% |
| Thursday | 92°F | Sunny | 0 to 8 mph W | 0% |
| Thursday Night | 62°F | Mostly Clear | 1 to 8 mph W | 0% |
| Friday | 86°F | Mostly Sunny | 1 to 8 mph WSW | 0% |
| Friday Night | 58°F | Partly Cloudy | 1 to 8 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 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 (6.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.