Weather Forecast and Radar for Denison, Iowa

Weather in Denison, IA

Denison, Iowa experiences all four seasons, with cold winters, hot summers, and pleasant springs and falls.

In the winter, temperatures average around 26°F and rarely dip below 0°F. Snowfall averages around 18 inches, with most of it falling during December and January.

In the spring, temperatures range from highs of around 58°F to lows of 33°F. April and May are usually the rainiest months with an average of 4-5 inches of precipitation.

Summer temperatures in Denison average around 72°F, with highs reaching into the 90s and lows in the 50s. July is typically the hottest and driest month, with an average of 2-3 inches of precipitation.

Fall temperatures average around 54°F, with highs in the 70s and lows in the 30s. September is usually the wettest month, with an average of 4-5 inches of precipitation.

Fast Facts About Denison, IA

As of 2020, the city population is 8319.

Major Cities Nearby Denison, IA

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Denison, Iowa.