Gilroy, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gilroy, a city in Santa Clara County, California.
This Afternoon
71°F
Sunny
Sunny. High near 71, with temperatures falling to around 67 in the afternoon. Northwest wind 2 to 9 mph, with gusts as high as 18 mph.
7-day forecast for Gilroy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Sunny | 2 to 9 mph NW | 0% |
| Tonight | 48°F | Mostly Cloudy | 2 to 12 mph NW | 1% |
| Thursday | 75°F | Sunny | 3 mph NNW | 0% |
| Thursday Night | 48°F | Clear | 2 to 6 mph NNE | 0% |
| Friday | 78°F | Sunny | 0 to 3 mph NNE | 0% |
| Friday Night | 48°F | Mostly Clear | 2 to 7 mph N | 0% |
| Saturday | 82°F | Sunny | 0 to 5 mph NE | 0% |
| Saturday Night | 50°F | Mostly Clear | 0 to 6 mph N | 0% |
| Sunday | 82°F | Sunny | 0 to 6 mph N | 0% |
| Sunday Night | 51°F | Partly Cloudy | 2 to 9 mph NNW | 0% |
| Monday | 79°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Monday Night | 51°F | Partly Cloudy | 3 to 9 mph NNW | 0% |
| Tuesday | 78°F | Sunny | 0 to 3 mph NNW | 1% |
| Tuesday Night | 51°F | Mostly Clear | 3 mph N | 4% |
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 Nov 5, 2026.