San Carlos, CA Weather & Growing Conditions
Today
66°F
Sunny
Sunny. High near 66, with temperatures falling to around 63 in the afternoon. North wind 3 to 16 mph, with gusts as high as 26 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Sunny | 3 to 16 mph N | 2% |
| Tonight | 51°F | Mostly Cloudy | 1 to 15 mph WNW | 2% |
| Thursday | 71°F | Mostly Sunny | 1 to 5 mph NNW | 0% |
| Thursday Night | 50°F | Clear | 1 to 6 mph NNW | 0% |
| Friday | 74°F | Sunny | 1 to 5 mph NNE | 0% |
| Friday Night | 51°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 77°F | Sunny | 2 mph NNE | 0% |
| Saturday Night | 51°F | Mostly Clear | 1 to 5 mph NW | 0% |
| Sunday | 72°F | Mostly Sunny | 1 to 6 mph NNW | 0% |
| Sunday Night | 53°F | Partly Cloudy | 1 to 6 mph WNW | 0% |
| Monday | 71°F | Mostly Sunny | 1 to 7 mph NW | 3% |
| Monday Night | 52°F | Partly Cloudy | 1 to 7 mph WNW | 3% |
| Tuesday | 70°F | Sunny | 0 to 5 mph NNW | 6% |
| Tuesday Night | 54°F | Partly Cloudy | 5 mph WSW | 14% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Carlos, CA
Last spring frost
Jan 17
First fall frost
Dec 12
Growing season
333 days
Hardiness zone
10a
Explore more for San Carlos, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Redwood City, Ca (2.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.