San Lorenzo, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for San Lorenzo, a community in Alameda County, California.
Overnight
50°F
Chance Light Rain
A chance of rain before 4am. Partly cloudy, with a low around 50. Northeast wind around 6 mph. Chance of precipitation is 30%.
7-day forecast for San Lorenzo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Chance Light Rain | 6 mph NE | 25% |
| Wednesday | 67°F | Sunny | 2 to 9 mph NNW | 2% |
| Wednesday Night | 51°F | Mostly Cloudy | 1 to 6 mph SSE | 2% |
| Thursday | 71°F | Mostly Sunny | 2 to 6 mph N | 0% |
| Thursday Night | 49°F | Mostly Clear | 1 to 5 mph WNW | 0% |
| Friday | 72°F | Sunny | 1 to 5 mph N | 0% |
| Friday Night | 51°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Saturday | 74°F | Sunny | 5 mph N | 0% |
| Saturday Night | 52°F | Mostly Clear | 1 to 5 mph WNW | 0% |
| Sunday | 74°F | Mostly Sunny | 1 to 5 mph NNW | 0% |
| Sunday Night | 53°F | Partly Cloudy | 1 to 5 mph SW | 0% |
| Monday | 72°F | Partly Sunny | 1 to 6 mph WSW | 2% |
| Monday Night | 52°F | Partly Cloudy | 1 to 6 mph SW | 2% |
| Tuesday | 71°F | Mostly Sunny | 1 to 6 mph N | 5% |
Forecast source: National Weather Service (api.weather.gov) for San Lorenzo (37.676, -122.136). Updated through the day.
Growing snapshot for San Lorenzo
Last spring frost
Jan 2
First fall frost
Dec 25
Growing season
365 days
Hardiness zone
10a
More local growing data for San Lorenzo: nearby ZIP 94580 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Alameda
Albany
Ashland
Berkeley
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Castro Valley
Cherryland
Dublin
Emeryville
Fairview
Fremont
Hayward
Kensington
Livermore
Mountain House
Newark
Oakland
Piedmont
Pleasanton
San Leandro
Sunol
Union City
Climate data from the nearest NOAA station, Hayward Air Terminal, Ca (1.9 mi from San Lorenzo). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.