Union County, IA Weather Forecast
County weather hub
Clear
Compare major city weather across Union County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Clear, with a low around 72. Southwest wind around 9 mph.
County Weather Overview
This county weather page brings together forecast coverage for Union County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Union County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 18 to Jul 24, 2026
- Latest sync
- Jul 18, 2026 2:40 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Union County
Monday looks like the warmest upcoming period in Union County at 96 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 63 degrees F.
The strongest winds are forecast for Tuesday at about 10 to 15 mph N.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 18, 2026 2:40 AM CDT
- Coverage
- 7 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
Sunny. High near 93, with temperatures falling to around 91 in the afternoon. West wind 5 to 8 mph.
A slight chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 70. North northeast wind around 6 mph. Chance of precipitation is 20%.
Sunny, with a high near 92. East wind around 6 mph.
Mostly clear, with a low around 74. South wind 5 to 8 mph.
Sunny, with a high near 96.
Mostly clear, with a low around 74.
Sunny, with a high near 88.
Mostly clear, with a low around 64.
Mostly sunny, with a high near 83.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63.
A slight chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83.
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 63.
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 18
|
Clear
|
72°F |
9 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
93°F |
5 to 8 mph
W
|
|
Saturday Night
Jul 18
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
70°F |
6 mph
NNE
|
|
Sunday
Jul 19
|
Sunny
|
92°F |
6 mph
E
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
74°F |
5 to 8 mph
S
|
|
Monday
Jul 20
|
Sunny
|
96°F |
8 to 12 mph
SW
|
|
Monday Night
Jul 20
|
Mostly Clear
|
74°F |
10 mph
W
|
|
Tuesday
Jul 21
|
Sunny
|
88°F |
10 to 15 mph
N
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
64°F |
7 to 15 mph
N
|
|
Wednesday
Jul 22
|
Mostly Sunny
|
83°F |
7 mph
N
|
|
Wednesday Night
Jul 22
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
63°F |
3 to 7 mph
E
|
|
Thursday
Jul 23
|
Slight Chance Showers And Thunderstorms
|
83°F |
7 mph
S
|
|
Thursday Night
Jul 23
|
Slight Chance Showers And Thunderstorms
|
63°F |
8 mph
SE
|
|
Friday
Jul 24
|
Slight Chance Showers And Thunderstorms
|
86°F |
7 mph
SSE
|
Major City Forecasts
Live forecast snapshots for major cities across Union County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Union County.
Largest mapped city population in this region: 7,660.
