Denison, TX Weather & Growing Conditions
This Afternoon
73°F
Mostly Sunny
Mostly sunny. High near 73, with temperatures falling to around 70 in the afternoon. Northwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Mostly Sunny | 15 mph NW | 1% |
| Tonight | 50°F | Mostly Clear | 5 to 10 mph NW | 0% |
| Wednesday | 70°F | Sunny | 0 to 5 mph WNW | 0% |
| Wednesday Night | 49°F | Partly Cloudy then Patchy Fog | 0 mph | 0% |
| Thursday | 75°F | Patchy Fog then Mostly Sunny | 0 to 10 mph SSW | 9% |
| Thursday Night | 49°F | Partly Cloudy | 5 to 10 mph NNW | 13% |
| Friday | 68°F | Sunny | 5 to 10 mph N | 0% |
| Friday Night | 44°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 66°F | Mostly Sunny | 0 to 5 mph N | 1% |
| Saturday Night | 44°F | Partly Cloudy | 0 to 5 mph N | 5% |
| Sunday | 69°F | Sunny | 0 to 5 mph NNW | 2% |
| Sunday Night | 43°F | Clear | 0 mph | 1% |
| Monday | 72°F | Sunny | 0 to 5 mph SSW | 1% |
| Monday Night | 46°F | Mostly Clear | 0 to 5 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Denison, TX
Last spring frost
Mar 14
First fall frost
Nov 19
Growing season
250 days
Hardiness zone
8a
Explore more for Denison, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Sherman, Tx (9.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.