Van Alstyne, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Van Alstyne, a city in Grayson County, Texas.
Overnight
50°F
Mostly Clear
Mostly clear, with a low around 50. Northwest wind around 5 mph.
7-day forecast for Van Alstyne
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Clear | 5 mph NW | 0% |
| Wednesday | 70°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Wednesday Night | 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% |
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.