Grayson, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grayson, a community in Stanislaus County, California.
This Afternoon
67°F
Slight Chance Light Rain
A slight chance of rain before 4pm. Partly sunny. High near 67, with temperatures falling to around 62 in the afternoon. South wind 1 to 6 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Grayson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Slight Chance Light Rain | 1 to 6 mph S | 24% |
| Tonight | 50°F | Patchy Fog then Partly Cloudy | 0 to 12 mph WNW | 3% |
| Wednesday | 69°F | Sunny | 7 to 14 mph NW | 0% |
| Wednesday Night | 49°F | Partly Cloudy | 2 to 7 mph WNW | 0% |
| Thursday | 71°F | Sunny | 2 to 12 mph WNW | 0% |
| Thursday Night | 47°F | Clear | 1 to 7 mph WNW | 0% |
| Friday | 73°F | Patchy Fog then Sunny | 1 to 5 mph NNW | 0% |
| Friday Night | 49°F | Clear | 0 to 5 mph N | 0% |
| Saturday | 76°F | Sunny | 0 to 3 mph ENE | 0% |
| Saturday Night | 50°F | Mostly Clear | 1 mph NW | 0% |
| Sunday | 75°F | Sunny | 3 mph NNW | 0% |
| Sunday Night | 51°F | Partly Cloudy | 0 to 3 mph N | 0% |
| Monday | 74°F | Mostly Sunny | 0 to 5 mph NNW | 0% |
| Monday Night | 51°F | Partly Cloudy | 1 to 5 mph NW | 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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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 Nov 4, 2026.