San Lorenzo, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for San Lorenzo, a community in Alameda County, California.
This Afternoon
67°F
Sunny
Sunny. High near 67, with temperatures falling to around 64 in the afternoon. West northwest wind around 9 mph.
7-day forecast for San Lorenzo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Sunny | 9 mph WNW | 1% |
| Tonight | 50°F | Mostly Cloudy then Patchy Fog | 1 to 5 mph ENE | 1% |
| Thursday | 70°F | Patchy Fog then Sunny | 2 to 6 mph NNW | 0% |
| Thursday Night | 51°F | Mostly Clear | 5 mph ESE | 0% |
| Friday | 72°F | Mostly Sunny | 2 to 6 mph NNE | 0% |
| Friday Night | 51°F | Mostly Clear | 0 to 5 mph ENE | 0% |
| Saturday | 75°F | Sunny | 5 mph NNE | 0% |
| Saturday Night | 52°F | Mostly Clear | 1 to 5 mph NW | 0% |
| Sunday | 74°F | Mostly Sunny | 1 to 6 mph NNW | 0% |
| Sunday Night | 53°F | Partly Cloudy | 1 to 6 mph WSW | 0% |
| Monday | 72°F | Mostly Sunny | 1 to 6 mph WSW | 0% |
| Monday Night | 52°F | Partly Cloudy | 1 to 6 mph SSW | 1% |
| Tuesday | 72°F | Mostly Sunny | 1 to 6 mph NE | 1% |
| Tuesday Night | 54°F | Partly Cloudy | 1 to 6 mph WSW | 9% |
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 Nov 5, 2026.