Campbell, CA Weather & Growing Conditions
Tonight
49°F
Partly Cloudy then Patchy Fog
Patchy fog between 1am and 4am. Partly cloudy, with a low around 49. Northeast wind 2 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Partly Cloudy then Patchy Fog | 2 to 6 mph NE | 5% |
| Wednesday | 68°F | Sunny | 2 to 10 mph NW | 1% |
| Wednesday Night | 49°F | Mostly Cloudy then Patchy Fog | 2 to 8 mph W | 1% |
| Thursday | 72°F | Patchy Fog then Mostly Sunny | 2 to 7 mph NW | 0% |
| Thursday Night | 47°F | Clear | 1 to 5 mph NNE | 0% |
| Friday | 76°F | Sunny | 1 to 5 mph NNE | 0% |
| Friday Night | 50°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Saturday | 79°F | Sunny | 0 to 3 mph NNW | 0% |
| Saturday Night | 49°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Sunday | 77°F | Sunny | 1 to 5 mph NNW | 0% |
| Sunday Night | 51°F | Partly Cloudy | 0 to 5 mph NNW | 0% |
| Monday | 75°F | Mostly Sunny | 1 to 6 mph NNW | 1% |
| Monday Night | 50°F | Partly Cloudy | 1 to 6 mph NW | 1% |
| Tuesday | 75°F | Sunny | 0 to 5 mph NNW | 8% |
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 Nov 4, 2026.