Gilroy, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gilroy, a city in Santa Clara County, California.
Tonight
56°F
Mostly Clear
Mostly clear, with a low around 56. Southwest wind 1 to 5 mph.
7-day forecast for Gilroy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Mostly Clear | 1 to 5 mph SW | 0% |
| Saturday | 85°F | Mostly Sunny | 1 to 6 mph S | 0% |
| Saturday Night | 57°F | Partly Cloudy | 0 to 5 mph WSW | 0% |
| Sunday | 79°F | Partly Sunny | 1 to 5 mph W | 2% |
| Sunday Night | 56°F | Mostly Cloudy | 5 mph SW | 2% |
| Monday | 78°F | Mostly Sunny | 2 to 7 mph SW | 0% |
| Monday Night | 56°F | Partly Cloudy | 1 to 7 mph SW | 0% |
| Tuesday | 83°F | Sunny | 1 to 6 mph SW | 0% |
| Tuesday Night | 58°F | Mostly Clear | 1 to 6 mph NW | 0% |
| Wednesday | 96°F | Sunny | 0 to 5 mph N | 0% |
| Wednesday Night | 62°F | Mostly Clear | 0 to 5 mph N | 0% |
| Thursday | 96°F | Sunny | 0 to 7 mph W | 0% |
| Thursday Night | 61°F | Mostly Clear | 0 to 7 mph W | 0% |
| Friday | 90°F | Sunny | 1 to 7 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Gilroy (37.006, -121.585). Updated through the day.
Growing snapshot for Gilroy
Last spring frost
Feb 24
First fall frost
Nov 27
Growing season
277 days
Hardiness zone
9b
More local growing data for Gilroy: nearby ZIP 95020 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Gilroy, Ca (0.9 mi from Gilroy). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.