Live Weather & Forecast
Weather in Denison
Iowa, United States · Real-time conditions & 3-day outlook
16°C
Feels like 16°C
61°F / Feels 61°F
Clear
Denison, Iowa
🌙 Nighttime
Updated: 2026-04-13 01:45
Humidity
100%
Wind
13.3 km/h S
Wind Gust
28 km/h
Pressure
1008 mb
Visibility
16 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
13°C
Wind Degree
185°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
150.9 μg/m³
NO₂
4.7 μg/m³
O₃
55 μg/m³
SO₂
1.8 μg/m³
PM 2.5
10.4 μg/m³
PM 10
11 μg/m³
Today's Hourly Forecast
24-hour breakdown for Denison, Iowa
12 AM
15°
Clear
1 AM
16°
Clear
2 AM
15°
Clear
3 AM
15°
Clear
4 AM
14°
Clear
5 AM
14°
Clear
6 AM
14°
Clear
7 AM
14°
Partly Cloudy
8 AM
17°
Mist
9 AM
19°
Sunny
10 AM
20°
Sunny
11 AM
22°
Sunny
12 PM
22°
Sunny
1 PM
23°
Overcast
2 PM
25°
Partly Cloudy
3 PM
26°
Partly Cloudy
4 PM
27°
Thundery outbreaks in nearby
5 PM
28°
Sunny
6 PM
27°
Sunny
7 PM
25°
Sunny
8 PM
24°
Sunny
9 PM
22°
Clear
10 PM
21°
Clear
11 PM
20°
Clear
3-Day Forecast
Daily overview for Denison, Iowa
Today
Sunny
28°
/
14°
🌧️ 0% chance of rain
💧 Avg. humidity: 82%
💨 Max wind: 31.7 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:44 AM
🌇 Sunset: 08:01 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Thundery outbreaks in nearby
24°
/
13°
🌧️ 0% chance of rain
💧 Avg. humidity: 88%
💨 Max wind: 24.5 km/h
🌧️ Total precip: 0.01 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:42 AM
🌇 Sunset: 08:02 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Wed, Apr 15
Moderate rain
19°
/
11°
🌧️ 86% chance of rain
💧 Avg. humidity: 81%
💨 Max wind: 41.8 km/h
🌧️ Total precip: 7.07 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:41 AM
🌇 Sunset: 08:03 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Best Time to Visit Denison
Plan your trip to Denison, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Denison?
Current conditions in Denison: Clear, temperature 16°C, humidity 100%.
What is the best time to visit Denison?
The best time to visit Denison is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Denison?
Denison is located at approximately 42° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Denison?
The wettest period in Denison is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Denison?
For visits to Denison during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Denison in?
Denison is located in United States, in the state of Iowa.
What are the public holidays in Denison in 2026?
View the 2026 public holidays for Denison on our Holidays page.
What are the GPS coordinates used for the weather forecast in Denison?
The weather forecast for Denison uses coordinates 42.0178, -95.3553.