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
59°F
Mostly Clear
Mostly clear, with a low around 59. Northwest wind around 2 mph.
7-day forecast for San Lorenzo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Mostly Clear | 2 mph NW | 0% |
| Tuesday | 84°F | Haze then Sunny | 2 to 10 mph WNW | 0% |
| Tuesday Night | 59°F | Mostly Clear | 2 to 9 mph NW | 0% |
| Wednesday | 83°F | Mostly Sunny | 2 to 9 mph WNW | 0% |
| Wednesday Night | 60°F | Partly Cloudy | 2 to 9 mph W | 0% |
| Thursday | 81°F | Mostly Sunny | 2 to 10 mph W | 0% |
| Thursday Night | 61°F | Partly Cloudy | 2 to 10 mph W | 0% |
| Friday | 84°F | Mostly Sunny | 2 to 9 mph W | 0% |
| Friday Night | 62°F | Partly Cloudy | 2 to 9 mph W | 0% |
| Saturday | 84°F | Mostly Sunny | 2 to 9 mph W | 0% |
| Saturday Night | 63°F | Partly Cloudy | 3 to 9 mph WSW | 0% |
| Sunday | 79°F | Sunny | 5 to 10 mph WSW | 0% |
| Sunday Night | 60°F | Partly Cloudy | 7 to 10 mph WSW | 0% |
| Monday | 76°F | Mostly Sunny | 7 to 12 mph WSW | 0% |
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
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Dublin
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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 Aug 4, 2026.