Union, IA Weather Forecast
Local 7-day forecast
Patchy Fog then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Union, IA in one place.
Patchy fog before 8am. Mostly sunny, with a high near 91. Southeast wind 2 to 13 mph.
Local Weather Overview
This forecast page for Union, 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: Jun 8, 2026 5:33 PM CDT.
The active forecast window currently covers Jun 9 to Jun 14, 2026 for Union, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 9 to Jun 14, 2026
- Latest sync
- Jun 8, 2026 5:33 PM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Union
Tuesday looks like the warmest upcoming period in Union at 91 degrees F.
Sunday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Wednesday at about 17 to 24 mph SSW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 8, 2026 5:33 PM 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
A chance of showers and thunderstorms between 11pm and 1am. Partly cloudy. Low around 72, with temperatures rising to around 74 overnight. Heat index values as high as 100. South wind 13 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 91. South southwest wind 17 to 24 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely before 4am, then a chance of showers and thunderstorms. Mostly clear, with a low around 64. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely before 10am, then showers and thunderstorms likely between 10am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 70%.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 58. Chance of precipitation is 40%.
Sunny, with a high near 84.
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 62.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85.
A chance of showers and thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 78. Chance of precipitation is 30%.
A slight chance of rain showers. Partly cloudy, with a low around 56.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jun 9
|
Patchy Fog then Mostly Sunny
|
91°F |
2 to 13 mph
SE
|
|
Tuesday Night
Jun 9
|
Chance Showers And Thunderstorms
|
72°F |
13 to 16 mph
S
|
|
Wednesday
Jun 10
|
Slight Chance Showers And Thunderstorms
|
91°F |
17 to 24 mph
SSW
|
|
Wednesday Night
Jun 10
|
Showers And Thunderstorms Likely
|
64°F |
3 to 17 mph
SW
|
|
Thursday
Jun 11
|
Showers And Thunderstorms Likely
|
82°F |
3 to 16 mph
WSW
|
|
Thursday Night
Jun 11
|
Chance Showers And Thunderstorms then Mostly Clear
|
58°F |
6 to 14 mph
WNW
|
|
Friday
Jun 12
|
Sunny
|
84°F |
8 to 15 mph
W
|
|
Friday Night
Jun 12
|
Mostly Clear then Slight Chance Showers And Thunderstorms
|
62°F |
5 to 10 mph
WSW
|
|
Saturday
Jun 13
|
Slight Chance Showers And Thunderstorms
|
85°F |
6 to 12 mph
W
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
57°F |
6 to 10 mph
NNW
|
|
Sunday
Jun 14
|
Chance Showers And Thunderstorms
|
78°F |
6 to 13 mph
NNW
|
|
Sunday Night
Jun 14
|
Slight Chance Rain Showers
|
56°F |
5 to 12 mph
E
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Union.