Allen, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Allen, a city in Collin County, Texas.
Overnight
50°F
Mostly Clear
Mostly clear, with a low around 50. Northwest wind around 5 mph.
7-day forecast for Allen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Clear | 5 mph NW | 0% |
| Wednesday | 72°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Wednesday Night | 52°F | Mostly Clear then Patchy Fog | 0 to 5 mph ESE | 0% |
| Thursday | 75°F | Sunny | 5 to 10 mph S | 0% |
| Thursday Night | 52°F | Partly Cloudy | 5 to 10 mph N | 3% |
| Friday | 69°F | Sunny | 10 mph N | 0% |
| Friday Night | 46°F | Partly Cloudy | 5 to 10 mph NNE | 0% |
| Saturday | 66°F | Mostly Sunny | 5 mph NNE | 2% |
| Saturday Night | 45°F | Slight Chance Rain Showers | 5 mph NNE | 15% |
| Sunday | 67°F | Mostly Sunny | 5 mph N | 3% |
| Sunday Night | 44°F | Mostly Clear | 0 mph | 1% |
| Monday | 69°F | Sunny | 0 to 5 mph SSW | 2% |
| Monday Night | 46°F | Mostly Clear | 0 mph | 1% |
| Tuesday | 72°F | Sunny | 0 to 5 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Allen (33.110, -96.673). Updated through the day.
Growing snapshot for Allen
Last spring frost
Mar 18
First fall frost
Nov 11
Growing season
239 days
Hardiness zone
8b
More local growing data for Allen: nearby ZIP 75013 weather · frost dates · planting calendar · Texas frost dates
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Climate data from the nearest NOAA station, Mckinney Muni Ap, Tx (7.5 mi from Allen). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.