Denison, IA Weather Forecast
Local 7-day forecast
Slight Chance Light Rain then Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Denison, IA in one place.
A slight chance of rain between 8am and 9am. Mostly cloudy. High near 50, with temperatures falling to around 48 in the afternoon. North northwest wind 13 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 20%.
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: Oct 15, 2026 8:43 PM CDT.
The active forecast window currently covers Oct 16 to Oct 22, 2026 for Denison, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 16 to Oct 22, 2026
- Latest sync
- Oct 15, 2026 8:43 PM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Denison
Thursday looks like the warmest upcoming period in Denison at 75 degrees F.
Friday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Friday at about 13 to 23 mph NNW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 8:43 PM CDT
- Coverage
- 7 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 sourceExtended Forecast
Widespread frost after 9pm. Mostly clear, with a low around 29. North northwest wind 0 to 9 mph, with gusts as high as 18 mph.
Widespread frost before 10am. Sunny. High near 58, with temperatures falling to around 55 in the afternoon. South southwest wind 1 to 12 mph, with gusts as high as 22 mph.
Clear, with a low around 39. South southwest wind around 10 mph, with gusts as high as 22 mph.
Sunny, with a high near 65.
Mostly clear, with a low around 44.
Mostly sunny, with a high near 65.
Partly cloudy, with a low around 46.
Mostly sunny, with a high near 72.
Mostly clear, with a low around 52.
A chance of rain showers after 7am. Mostly sunny, with a high near 74. Chance of precipitation is 30%.
A chance of rain showers. Partly cloudy, with a low around 56. Chance of precipitation is 30%.
A chance of rain showers. Partly sunny, with a high near 75.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 16
|
Slight Chance Light Rain then Mostly Cloudy
|
50°F |
13 to 23 mph
NNW
|
|
Friday Night
Oct 16
|
Widespread Frost
|
29°F |
0 to 9 mph
NNW
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
58°F |
1 to 12 mph
SSW
|
|
Saturday Night
Oct 17
|
Clear
|
39°F |
10 mph
SSW
|
|
Sunday
Oct 18
|
Sunny
|
65°F |
10 to 14 mph
SSW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
44°F |
3 to 9 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
65°F |
6 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
46°F |
5 mph
SSE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
72°F |
2 to 8 mph
SSE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
52°F |
6 mph
SSE
|
|
Wednesday
Oct 21
|
Chance Rain Showers
|
74°F |
6 to 10 mph
SSE
|
|
Wednesday Night
Oct 21
|
Chance Rain Showers
|
56°F |
8 mph
S
|
|
Thursday
Oct 22
|
Chance Rain Showers
|
75°F |
7 to 10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Denison.
Nearby forecast pages are not available for this location yet.
