Weather in Denison, IA
Updated 2026-08-11 10:30 local time · ZIP codes 51442
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
81°8% rain90°5% rain93°4% rain95°3% rain96°1% rain97°1% rain97°1% rain96°1% rain94°1% rain91°2% rain87°4% rain
84°4% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 7%).
It feels like 86°F with winds near 6 mph.
87°F, 4% rain chance and 11 mph wind.
Visibility is around 6 mi; gusts may reach 23 mph.
Current temperature is 81°F, wind 6 mph, rain chance up to 7%.
UV index is 3.
Denison weather today
Sunny and 81°F in Denison, IA. Today's high is 97°F with a 6% rain chance. Winds are around 6 mph with gusts near 7 mph. Relative humidity is 77%, pressure is 29.79 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Denison
Sunrise is at 06:25 AM and sunset is at 08:28 PM. Tomorrow's forecast calls for Sunny with a high near 96°F and a low near 72°F. The maximum rain chance is 5%.