Decatur County, IA Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Decatur County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 57.
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
- Oct 16 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 12:46 PM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Decatur County
Monday looks like the warmest upcoming period in Decatur County at 70 degrees F.
Friday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Friday at about 12 to 20 mph NNW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 12:46 PM CDT
- Coverage
- 4 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
Areas of frost after 4am. Mostly clear, with a low around 35.
Areas of frost before 8am. Sunny, with a high near 61.
Mostly clear, with a low around 42.
Sunny, with a high near 67.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 50.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 70.
Partly cloudy, with a low around 53.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 16
|
Mostly Sunny
|
57°F |
12 to 20 mph
NNW
|
|
Friday Night
Oct 16
|
Mostly Clear then Areas Of Frost
|
35°F |
1 to 9 mph
NNW
|
|
Saturday
Oct 17
|
Areas Of Frost then Sunny
|
61°F |
1 to 9 mph
SSW
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
42°F |
8 mph
S
|
|
Sunday
Oct 18
|
Sunny
|
67°F |
9 to 14 mph
SSW
|
|
Sunday Night
Oct 18
|
Partly Cloudy then Slight Chance Rain Showers
|
50°F |
7 to 10 mph
SSW
|
|
Monday
Oct 19
|
Slight Chance Rain Showers then Mostly Sunny
|
70°F |
8 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
53°F |
6 mph
SSE
|
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.
