San Lorenzo, CA Weather & Growing Conditions
Overnight
59°F
Mostly Cloudy
Mostly cloudy, with a low around 59. West southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Mostly Cloudy | 6 mph WSW | 0% |
| Saturday | 77°F | Mostly Sunny | 3 to 9 mph WSW | 0% |
| Saturday Night | 58°F | Mostly Cloudy | 5 to 8 mph WSW | 0% |
| Sunday | 70°F | Mostly Cloudy | 5 to 9 mph WSW | 3% |
| Sunday Night | 58°F | Mostly Cloudy | 5 to 8 mph WSW | 3% |
| Monday | 73°F | Mostly Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 58°F | Partly Cloudy | 3 to 10 mph WSW | 0% |
| Tuesday | 75°F | Mostly Sunny | 3 to 9 mph SW | 0% |
| Tuesday Night | 58°F | Partly Cloudy | 1 to 9 mph WSW | 0% |
| Wednesday | 84°F | Mostly Sunny | 1 to 8 mph SW | 0% |
| Wednesday Night | 61°F | Partly Cloudy | 1 to 8 mph WSW | 0% |
| Thursday | 85°F | Sunny | 1 to 9 mph WSW | 0% |
| Thursday Night | 61°F | Partly Cloudy | 2 to 9 mph WSW | 0% |
| Friday | 79°F | Mostly Sunny | 2 to 9 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Lorenzo, CA
Last spring frost
Jan 2
First fall frost
Dec 25
Growing season
365 days
Hardiness zone
10a
Explore more for San Lorenzo, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Hayward Air Terminal, Ca (1.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.