Diablo Grande, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Diablo Grande, a community in Stanislaus County, California.
This Afternoon
86°F
Sunny
Sunny, with a high near 86. North northeast wind around 10 mph, with gusts as high as 18 mph.
7-day forecast for Diablo Grande
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Sunny | 10 mph NNE | 0% |
| Tonight | 64°F | Partly Cloudy | 1 to 8 mph WNW | 0% |
| Sunday | 82°F | Partly Sunny | 1 to 7 mph NE | 0% |
| Sunday Night | 59°F | Mostly Cloudy | 5 mph NW | 0% |
| Monday | 83°F | Mostly Sunny | 2 to 8 mph NNE | 0% |
| Monday Night | 60°F | Mostly Clear | 1 to 7 mph W | 0% |
| Tuesday | 85°F | Sunny | 1 to 7 mph N | 0% |
| Tuesday Night | 64°F | Clear | 0 to 7 mph NW | 0% |
| Wednesday | 89°F | Sunny | 0 to 8 mph N | 0% |
| Wednesday Night | 70°F | Mostly Clear | 0 to 8 mph NW | 0% |
| Thursday | 93°F | Sunny | 0 to 8 mph NE | 0% |
| Thursday Night | 70°F | Mostly Clear | 1 to 7 mph WNW | 0% |
| Friday | 89°F | Sunny | 1 to 9 mph NNW | 0% |
| Friday Night | 65°F | Mostly Clear | 1 to 9 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Diablo Grande (37.399, -121.264). Updated through the day.
Growing snapshot for Diablo Grande
Last spring frost
Feb 26
First fall frost
Nov 29
Growing season
273 days
Hardiness zone
9b
More local growing data for Diablo Grande: nearby ZIP 95363 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Newman, Ca (14.3 mi from Diablo Grande). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.