Decatur County, IA Weather Forecast
County weather hub
Sunny
Compare major city weather across Decatur County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 54. Northwest wind 13 to 17 mph, with gusts as high as 28 mph. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Decatur County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Decatur County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 18 to Apr 23, 2026
- Latest sync
- Apr 17, 2026 6:49 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Decatur County
Wednesday looks like the warmest upcoming period in Decatur County at 80 degrees F.
Saturday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Thursday at about 10 to 18 mph S.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 17, 2026 6:49 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- DMX
- Radar station
- KDMX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 34. West northwest wind 5 to 13 mph, with gusts as high as 21 mph.
Sunny, with a high near 64.
Mostly clear, with a low around 39.
Sunny, with a high near 70.
Partly cloudy, with a low around 52.
Mostly sunny, with a high near 78.
Mostly clear, with a low around 53.
Sunny, with a high near 80.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 58.
A slight chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 77.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 18
|
Sunny
|
54°F |
13 to 17 mph
NW
|
|
Saturday Night
Apr 18
|
Mostly Clear
|
34°F |
5 to 13 mph
WNW
|
|
Sunday
Apr 19
|
Sunny
|
64°F |
6 to 9 mph
WNW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
39°F |
8 mph
ENE
|
|
Monday
Apr 20
|
Sunny
|
70°F |
9 to 15 mph
SE
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
52°F |
14 mph
SSW
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
78°F |
12 to 16 mph
SW
|
|
Tuesday Night
Apr 21
|
Mostly Clear
|
53°F |
8 to 13 mph
SSW
|
|
Wednesday
Apr 22
|
Sunny
|
80°F |
7 to 13 mph
S
|
|
Wednesday Night
Apr 22
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
58°F |
13 mph
S
|
|
Thursday
Apr 23
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
77°F |
10 to 18 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Decatur County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Decatur County.
Largest mapped city population in this region: 2,196.
