About Denison, TX's Climate & Weather History

Denison, in Texas, United States, is home to roughly 23,200 people in the Central Time Zone at 33.8°N latitude.

In 2025, Denison recorded an average annual temperature of 65°F. The hottest temperatures reached 99°F in July; the coolest were 9°F in February. Total precipitation for the year was 43 inches, with the wettest month being May. Snowfall for the year totaled approximately 3 inches.