Denison (TX) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Denison.
Climate overview of Denison
The climate in Denison, Texas, United States of America, is marked by large temperature swings across the seasons, ranging from 35°C (95°F) in August to 12°C (54°F) in January.
Rain/snowfall is high, totalling around 1096 mm (43 in) per year. May is the wettest month and February the driest. The city also experiences very warm summers and cold winters.
Denison Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Denison - and find the best time to visit.
Monthly Temperature in Denison
In Denison, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a very warm 35°C (95°F) in August, the warmest time of the year, to a chilly 12°C (54°F) during cooler months like January.
At night, you can expect temperatures ranging from 23°C (73°F) in August to around 0°C (32°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Denison
Denison experiences significant rain/snowfall throughout the year, averaging 1096 mm (43 in) of precipitation annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, May it receives heavy rainfall, averaging 167 mm (6.6 in) of precipitation, recorded across 11 rainy days. In contrast, the driest month February brings less rainfall, with 54 mm (2.1 in) over 8 rainy days. For more details, please visit our Denison Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Denison
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May, October and November
- Warmest weather: July and August
- Wettest months: March, April, May and June, when rainfall is highest.
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around 0°C (32°F).
Frequently asked questions about the climate in Denison
What is the best time to visit Denison?
April, May, October and November typically offer the most optimal weather in Denison. In contrast, July and August tend to have less optimal conditions. Denison has very warm summers and cold winters.
What temperatures can I expect in Denison?
Daytime highs range from 12°C (54°F) in January to 35°C (95°F) in August. Nighttime lows range from 0°C (32°F) to 23°C (73°F). Temperatures vary considerably through the year.
How much rain does Denison get?
Annual rainfall is around 1096 mm (43 in). May is the wettest month with 167 mm (6.6 in), while February is the driest with 54 mm (2.1 in).
Denison 3-Day Forecast
Denison on the map
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