Belmont, CA Weather & Growing Conditions
Overnight
51°F
Chance Light Rain
A chance of rain before 4am. Partly cloudy, with a low around 51. East wind around 6 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Chance Light Rain | 6 mph E | 25% |
| Wednesday | 67°F | Sunny | 3 to 17 mph NNE | 2% |
| Wednesday Night | 52°F | Mostly Cloudy | 2 to 16 mph WNW | 2% |
| Thursday | 72°F | Mostly Sunny | 2 to 6 mph NNW | 0% |
| Thursday Night | 50°F | Mostly Clear | 1 to 7 mph NNW | 0% |
| Friday | 74°F | Sunny | 1 to 7 mph NNE | 0% |
| Friday Night | 51°F | Mostly Clear | 1 to 7 mph N | 0% |
| Saturday | 77°F | Sunny | 2 mph NNE | 0% |
| Saturday Night | 52°F | Mostly Clear | 1 to 5 mph NW | 0% |
| Sunday | 73°F | Mostly Sunny | 1 to 7 mph NNW | 0% |
| Sunday Night | 54°F | Partly Cloudy | 1 to 7 mph WNW | 0% |
| Monday | 71°F | Mostly Sunny | 1 to 8 mph NW | 3% |
| Monday Night | 53°F | Partly Cloudy | 1 to 8 mph WNW | 3% |
| Tuesday | 71°F | Sunny | 1 to 6 mph NNW | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Belmont, CA
Last spring frost
Jan 17
First fall frost
Dec 12
Growing season
333 days
Hardiness zone
10a
Explore more for Belmont, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Redwood City, Ca (4.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.