Santa Clara, CA Weather & Growing Conditions
Tonight
56°F
Mostly Clear then Patchy Fog
Patchy fog after 4am. Mostly clear, with a low around 56. Northwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Mostly Clear then Patchy Fog | 3 mph NW | 0% |
| Saturday | 83°F | Patchy Fog then Mostly Sunny | 0 to 10 mph ENE | 0% |
| Saturday Night | 57°F | Mostly Cloudy | 2 to 8 mph NW | 0% |
| Sunday | 77°F | Patchy Fog then Partly Sunny | 2 to 8 mph WNW | 2% |
| Sunday Night | 56°F | Mostly Cloudy then Patchy Fog | 1 to 8 mph W | 2% |
| Monday | 80°F | Patchy Fog then Mostly Sunny | 1 to 9 mph WSW | 0% |
| Monday Night | 57°F | Mostly Clear | 1 to 9 mph WSW | 0% |
| Tuesday | 83°F | Sunny | 1 to 9 mph W | 0% |
| Tuesday Night | 58°F | Mostly Clear | 0 to 9 mph WNW | 0% |
| Wednesday | 90°F | Sunny | 0 to 9 mph NW | 0% |
| Wednesday Night | 62°F | Mostly Clear | 0 to 9 mph NW | 0% |
| Thursday | 91°F | Sunny | 0 to 10 mph WSW | 0% |
| Thursday Night | 62°F | Mostly Clear | 1 to 10 mph WNW | 0% |
| Friday | 86°F | Sunny | 0 to 12 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Santa Clara, CA
Last spring frost
Jan 12
First fall frost
Dec 22
Growing season
347 days
Hardiness zone
9b
Explore more for Santa Clara, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, San Jose, Ca (1.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.