San Martin, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for San Martin, a community in Santa Clara County, California.
Today
96°F
Sunny
Sunny. High near 96, with temperatures falling to around 92 in the afternoon. South southeast wind 1 to 7 mph.
7-day forecast for San Martin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 96°F | Sunny | 1 to 7 mph SSE | 0% |
| Tonight | 57°F | Mostly Clear | 0 to 6 mph SSE | 0% |
| Wednesday | 95°F | Sunny | 0 to 7 mph S | 0% |
| Wednesday Night | 58°F | Mostly Clear | 0 to 6 mph WSW | 0% |
| Thursday | 96°F | Sunny | 0 to 7 mph WSW | 0% |
| Thursday Night | 60°F | Mostly Clear | 0 to 7 mph WNW | 0% |
| Friday | 100°F | Sunny | 1 to 8 mph W | 0% |
| Friday Night | 62°F | Mostly Clear | 0 to 8 mph WNW | 0% |
| Saturday | 98°F | Sunny | 0 to 7 mph WNW | 0% |
| Saturday Night | 61°F | Mostly Clear | 0 to 7 mph WNW | 0% |
| Sunday | 93°F | Sunny | 0 to 8 mph WSW | 0% |
| Sunday Night | 57°F | Mostly Clear then Patchy Fog | 1 to 8 mph SW | 0% |
| Monday | 86°F | Sunny | 1 to 9 mph SSW | 0% |
| Monday Night | 55°F | Mostly Clear | 1 to 9 mph SSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for San Martin (37.083, -121.596). Updated through the day.
Growing snapshot for San Martin
Last spring frost
Feb 24
First fall frost
Nov 27
Growing season
277 days
Hardiness zone
9b
More local growing data for San Martin: nearby ZIP 95046 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Gilroy, Ca (7 mi from San Martin). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.