75020 Weather (Denison, TX)

Weather forecast for: Denison TX

Last Update: 1:26 am CDT Sep 6, 2026

Today: A 10 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 101. Heat index values as high as 104. Calm wind becoming east southeast around 5 mph in the afternoon.

Tonight: A 10 percent chance of showers before 10pm. Mostly clear, with a low around 79. East southeast wind around 5 mph becoming calm in the evening.

Labor Day: Sunny and hot, with a high near 101. Heat index values as high as 105. Calm wind becoming southeast around 5 mph in the afternoon.

Monday Night: Mostly clear, with a low around 80. Southeast wind around 5 mph.

Tuesday: Sunny and hot, with a high near 102. South wind 5 to 10 mph.

Tuesday Night: Clear, with a low around 79. South wind around 5 mph.

Wednesday: Sunny and hot, with a high near 101. South wind around 5 mph.

Wednesday Night: Mostly clear, with a low around 79. South southeast wind around 5 mph.

Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 100. South southwest wind around 5 mph becoming east in the afternoon.

Thursday Night: Partly cloudy, with a low around 78.

Friday: Mostly sunny and hot, with a high near 100.

Friday Night: Mostly clear, with a low around 78.

Saturday: Sunny and hot, with a high near 100.