Denison, IA Weather Forecast

Local 7-day forecast

51°

Sunny

Track current conditions, temperature changes, wind, and the full daily outlook for Denison, IA in one place.

Saturday, April 18, 2026

Wind: 13 to 18 mph NW

Saturday

Sunny, with a high near 51.

Local 7-day forecast

Local Weather Overview

This forecast page for Denison, IA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 16, 2026 2:04 AM CDT.

The active forecast window currently covers Apr 18 to Apr 22, 2026 for Denison, IA.

Page Snapshot

Page focus: city weather
Forecast window: Apr 18 to Apr 22, 2026
Latest sync: Apr 16, 2026 2:04 AM CDT
Forecast office: DMX
Source: NOAA / NWS

Next High

51°F

Saturday

Next Low

31°F

Saturday Night

Rain Outlook

Periods mentioning precipitation

Windiest

13 to 18 mph

Saturday

Daily Outlook

Today

Apr 18

Sunny

51 °F

/ 31°F

Wind 13 to 18 mph

Sun

Apr 19

Sunny

61 °F

/ 39°F

Wind 3 to 9 mph

Mon

Apr 20

Sunny

74 °F

/ 49°F

Wind 9 to 17 mph

Tue

Apr 21

Sunny

76 °F

/ 50°F

Wind 10 to 14 mph

Wed

Apr 22

Mostly Sunny then Slight Chance Showers And Thunderstorms

74 °F

Wind 8 to 15 mph

This Week in Denison

Tuesday looks like the warmest upcoming period in Denison at 76 degrees F.

Saturday Night is the coolest period ahead with temperatures near 31 degrees F.

The strongest winds are forecast for Saturday at about 13 to 18 mph NW.

Precipitation is mentioned in 1 upcoming forecast period.

Forecast Details

Last updated: Apr 16, 2026 2:04 AM CDT
Coverage: 5 days
Time zone: America/Chicago
Forecast office: DMX
Radar station: KOAX

Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.

Open NOAA source

Extended Forecast

Saturday Night

Apr 18

31°F

Mostly Clear

3 to 16 mph WNW

Mostly clear, with a low around 31.

Sunday

Apr 19

61°F

Sunny

3 to 9 mph WNW

Sunny, with a high near 61.

Sunday Night

Apr 19

39°F

Mostly Clear

5 to 9 mph E

Mostly clear, with a low around 39.

Monday

Apr 20

74°F

Sunny

9 to 17 mph SSE

Sunny, with a high near 74.

Monday Night

Apr 20

49°F

Mostly Clear

12 to 15 mph SSW

Mostly clear, with a low around 49.

Tuesday

Apr 21

76°F

Sunny

10 to 14 mph SW

Sunny, with a high near 76.

Tuesday Night

Apr 21

50°F

Mostly Clear

8 to 12 mph SSE

Mostly clear, with a low around 50.

Wednesday

Apr 22

74°F

Mostly Sunny then Slight Chance Showers And Thunderstorms

8 to 15 mph SSE

A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74.

Detailed Forecast

Period	Conditions	Temp	Wind	Details
Saturday Apr 18	Sunny	51°F	13 to 18 mph NW	Sunny, with a high near 51.
Saturday Night Apr 18	Mostly Clear	31°F	3 to 16 mph WNW	Mostly clear, with a low around 31.
Sunday Apr 19	Sunny	61°F	3 to 9 mph WNW	Sunny, with a high near 61.
Sunday Night Apr 19	Mostly Clear	39°F	5 to 9 mph E	Mostly clear, with a low around 39.
Monday Apr 20	Sunny	74°F	9 to 17 mph SSE	Sunny, with a high near 74.
Monday Night Apr 20	Mostly Clear	49°F	12 to 15 mph SSW	Mostly clear, with a low around 49.
Tuesday Apr 21	Sunny	76°F	10 to 14 mph SW	Sunny, with a high near 76.
Tuesday Night Apr 21	Mostly Clear	50°F	8 to 12 mph SSE	Mostly clear, with a low around 50.
Wednesday Apr 22	Mostly Sunny then Slight Chance Showers And Thunderstorms	74°F	8 to 15 mph SSE	A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74.

Nearby Forecasts

Explore weather pages for nearby cities and major places around Denison.

Nearby forecast pages are not available for this location yet.

Region Links

Crawford County weather

County forecast page

Iowa weather

Statewide weather overview

United States weather

National weather entry point

Dension iowa image

Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.