Grayson, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grayson, a community in Stanislaus County, California.
Overnight
67°F
Clear
Clear, with a low around 67. Northwest wind around 3 mph.
7-day forecast for Grayson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 67°F | Clear | 3 mph NW | 0% |
| Tuesday | 102°F | Sunny | 3 to 7 mph NNW | 0% |
| Tuesday Night | 64°F | Clear | 3 to 8 mph NW | 0% |
| Wednesday | 100°F | Sunny | 7 mph NNW | 0% |
| Wednesday Night | 64°F | Clear | 3 to 7 mph NW | 0% |
| Thursday | 101°F | Sunny | 5 to 9 mph NNW | 0% |
| Thursday Night | 65°F | Clear | 3 to 9 mph NW | 0% |
| Friday | 101°F | Sunny | 5 to 9 mph NNW | 0% |
| Friday Night | 67°F | Clear | 2 to 9 mph NW | 0% |
| Saturday | 103°F | Sunny | 5 to 9 mph NNW | 0% |
| Saturday Night | 68°F | Mostly Clear | 1 to 9 mph NW | 0% |
| Sunday | 101°F | Sunny | 3 to 9 mph NNW | 0% |
| Sunday Night | 64°F | Mostly Clear | 1 to 9 mph NW | 0% |
| Monday | 96°F | Sunny | 2 to 7 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Grayson (37.565, -121.180). Updated through the day.
Growing snapshot for Grayson
Last spring frost
Feb 25
First fall frost
Nov 26
Growing season
272 days
Hardiness zone
9b
More local growing data for Grayson: nearby ZIP 95387 weather · frost dates · planting calendar · California frost dates
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Keyes
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Climate data from the nearest NOAA station, Tracy Carbona, Ca (10.4 mi from Grayson). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.