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
70°F
Mostly Sunny
Mostly sunny. High near 70, with temperatures falling to around 67 in the afternoon. Northwest wind 0 to 5 mph.
7-day forecast for Van Alstyne
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Tonight | 51°F | Partly Cloudy then Patchy Fog | 0 to 5 mph ESE | 0% |
| Thursday | 74°F | Sunny | 0 to 10 mph S | 0% |
| Thursday Night | 51°F | Mostly Cloudy | 0 to 10 mph N | 7% |
| Friday | 67°F | Sunny | 5 to 10 mph N | 0% |
| Friday Night | 46°F | Partly Cloudy | 5 mph NNE | 0% |
| Saturday | 64°F | Mostly Sunny | 5 mph NNE | 1% |
| Saturday Night | 45°F | Slight Chance Rain Showers | 0 to 5 mph N | 15% |
| Sunday | 65°F | Mostly Sunny | 0 to 5 mph N | 2% |
| Sunday Night | 43°F | Mostly Clear | 0 mph | 0% |
| Monday | 68°F | Sunny | 0 to 5 mph S | 2% |
| Monday Night | 45°F | Mostly Clear | 0 mph | 2% |
| Tuesday | 71°F | Sunny | 0 to 5 mph S | 2% |
| Tuesday Night | 50°F | Partly Cloudy | 5 mph SSE | 3% |
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 Nov 4, 2026.