Van Alstyne, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Van Alstyne, a city in Grayson County, Texas.
Today
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 99. South southeast wind 5 to 10 mph.
7-day forecast for Van Alstyne
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 98°F | Sunny | 5 to 10 mph SSE | 2% |
| Tonight | 76°F | Mostly Clear | 5 to 10 mph SSE | 2% |
| Wednesday | 100°F | Sunny | 5 to 10 mph SSW | 1% |
| Wednesday Night | 78°F | Mostly Clear | 10 mph SSE | 0% |
| Thursday | 97°F | Sunny | 10 mph S | 2% |
| Thursday Night | 77°F | Mostly Clear | 10 mph SSE | 2% |
| Friday | 97°F | Sunny | 5 to 10 mph S | 11% |
| Friday Night | 76°F | Mostly Clear | 5 to 10 mph SSE | 11% |
| Saturday | 95°F | Sunny | 5 to 10 mph S | 7% |
| Saturday Night | 76°F | Mostly Clear | 5 to 10 mph SSE | 7% |
| Sunday | 96°F | Sunny | 5 to 10 mph S | 4% |
| Sunday Night | 76°F | Mostly Clear | 10 mph SSE | 4% |
| Monday | 96°F | Sunny | 10 to 15 mph S | 4% |
| Monday Night | 77°F | Mostly Clear | 10 to 15 mph S | 4% |
Forecast source: National Weather Service (api.weather.gov) for Van Alstyne (33.422, -96.583). Updated through the day.
Growing snapshot for Van Alstyne
Last spring frost
Mar 17
First fall frost
Nov 15
Growing season
241 days
Hardiness zone
8a
More local growing data for Van Alstyne: nearby ZIP 75495 weather · frost dates · planting calendar · Texas frost dates
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Climate data from the nearest NOAA station, Mckinney Municipal Airport, Tx (17.4 mi from Van Alstyne). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.