Campbell, CA Weather & Growing Conditions
Overnight
59°F
Mostly Clear
Mostly clear, with a low around 59. South wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Mostly Clear | 3 mph S | 0% |
| Tuesday | 102°F | Haze then Sunny | 2 to 6 mph NE | 0% |
| Tuesday Night | 59°F | Mostly Clear | 5 mph NE | 0% |
| Wednesday | 95°F | Sunny | 1 to 6 mph WNW | 0% |
| Wednesday Night | 60°F | Mostly Clear | 0 to 6 mph WSW | 0% |
| Thursday | 92°F | Sunny | 0 to 7 mph WNW | 0% |
| Thursday Night | 61°F | Mostly Clear | 1 to 7 mph NW | 0% |
| Friday | 96°F | Sunny | 1 to 7 mph NW | 0% |
| Friday Night | 64°F | Clear | 0 to 7 mph NW | 0% |
| Saturday | 96°F | Sunny | 0 to 7 mph NW | 0% |
| Saturday Night | 64°F | Mostly Clear | 1 to 7 mph WNW | 0% |
| Sunday | 91°F | Sunny | 1 to 8 mph WNW | 0% |
| Sunday Night | 60°F | Mostly Clear | 2 to 8 mph WSW | 0% |
| Monday | 86°F | Sunny | 2 to 7 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Campbell, CA
Last spring frost
Feb 2
First fall frost
Dec 6
Growing season
310 days
Hardiness zone
9b
Explore more for Campbell, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Los Gatos, Ca (3.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.