San Leandro, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for San Leandro, a city in Alameda County, California.
Tonight
51°F
Partly Cloudy
Partly cloudy, with a low around 51. East northeast wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for San Leandro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Partly Cloudy | 6 mph ENE | 12% |
| Wednesday | 67°F | Sunny | 2 to 9 mph N | 2% |
| Wednesday Night | 51°F | Mostly Cloudy | 2 to 6 mph NNW | 2% |
| Thursday | 70°F | Mostly Sunny | 5 mph NNE | 0% |
| Thursday Night | 50°F | Mostly Clear | 5 mph WNW | 0% |
| Friday | 72°F | Sunny | 5 mph N | 0% |
| Friday Night | 51°F | Mostly Clear | 0 to 5 mph ENE | 0% |
| Saturday | 74°F | Sunny | 5 mph N | 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 | Partly Sunny | 1 to 7 mph WSW | 2% |
| Monday Night | 53°F | Partly Cloudy | 1 to 7 mph SW | 2% |
| Tuesday | 72°F | Sunny | 1 to 6 mph N | 5% |
Forecast source: National Weather Service (api.weather.gov) for San Leandro (37.703, -122.163). Updated through the day.
Growing snapshot for San Leandro
Last spring frost
Jan 7
First fall frost
Dec 23
Growing season
356 days
Hardiness zone
10a
More local growing data for San Leandro: nearby ZIP 94577 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Oakland Metro Intl Ap, Ca (2.8 mi from San Leandro). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.