Allen, TX Weather & Growing Conditions
Overnight
50°F
Mostly Clear
Mostly clear. Low around 50, with temperatures rising to around 52 overnight. Northwest wind around 5 mph.
7-day forecast
| 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 to 15 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 | 66°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 to 5 mph SSE | 2% |
| Tuesday | 72°F | Sunny | 0 to 5 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Allen, TX
Last spring frost
Mar 18
First fall frost
Nov 11
Growing season
239 days
Hardiness zone
8b
Explore more for Allen, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Mckinney Muni Ap, Tx (7.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.