Denison, TX Weather & Growing Conditions
Overnight
76°F
Mostly Clear
Mostly clear. Low around 76, with temperatures rising to around 78 overnight. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 76°F | Mostly Clear | 5 mph S | 0% |
| Saturday | 99°F | Sunny | 5 to 10 mph S | 0% |
| Saturday Night | 77°F | Mostly Clear | 5 to 10 mph S | 0% |
| Sunday | 99°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph S | 29% |
| Sunday Night | 73°F | Chance Showers And Thunderstorms | 5 mph SE | 53% |
| Monday | 93°F | Chance Showers And Thunderstorms | 5 mph WNW | 53% |
| Monday Night | 69°F | Partly Cloudy | 5 to 10 mph NNE | 12% |
| Tuesday | 89°F | Mostly Sunny | 10 mph NNE | 13% |
| Tuesday Night | 66°F | Slight Chance Rain Showers | 5 to 10 mph NE | 15% |
| Wednesday | 90°F | Mostly Sunny | 5 to 10 mph ENE | 12% |
| Wednesday Night | 67°F | Partly Cloudy | 5 mph ENE | 5% |
| Thursday | 90°F | Mostly Sunny | 5 mph ESE | 5% |
| Thursday Night | 68°F | Partly Cloudy | 5 mph E | 3% |
| Friday | 91°F | Mostly Sunny | 5 mph ESE | 5% |
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 (5.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.