Union, MO Weather Forecast
Local 7-day forecast
Scattered Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Union, MO in one place.
Scattered showers and thunderstorms. Partly sunny, with a high near 81. Southeast wind around 3 mph. Chance of precipitation is 30%.
Local Weather Overview
This forecast page for Union, MO 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: May 30, 2026 4:37 PM CDT.
The active forecast window currently covers May 30 to Jun 5, 2026 for Union, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 30 to Jun 5, 2026
- Latest sync
- May 30, 2026 4:37 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Union
Friday looks like the warmest upcoming period in Union at 87 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Tuesday at about 0 to 6 mph NE.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- May 30, 2026 4:37 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Isolated showers and thunderstorms before 9pm. Mostly cloudy, with a low around 64. East wind around 3 mph. Chance of precipitation is 20%.
Isolated showers and thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 4pm, then isolated showers and thunderstorms. Mostly cloudy, with a high near 83. East wind around 3 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely. Partly cloudy, with a low around 63. Southeast wind around 2 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 85. North wind 0 to 3 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 60. Chance of precipitation is 30%.
Sunny, with a high near 82.
Mostly clear, with a low around 55.
Sunny, with a high near 81.
Mostly clear, with a low around 55.
Sunny, with a high near 85.
Partly cloudy, with a low around 62.
A chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
May 30
|
Scattered Showers And Thunderstorms
|
81°F |
3 mph
SE
|
|
Tonight
May 30
|
Isolated Showers And Thunderstorms then Mostly Cloudy
|
64°F |
3 mph
E
|
|
Sunday
May 31
|
Isolated Showers And Thunderstorms then Chance Showers And Thunderstorms
|
83°F |
3 mph
E
|
|
Sunday Night
May 31
|
Showers And Thunderstorms Likely
|
63°F |
2 mph
SE
|
|
Monday
Jun 1
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
85°F |
0 to 3 mph
N
|
|
Monday Night
Jun 1
|
Chance Showers And Thunderstorms then Mostly Clear
|
60°F |
0 to 3 mph
NE
|
|
Tuesday
Jun 2
|
Sunny
|
82°F |
0 to 6 mph
NE
|
|
Tuesday Night
Jun 2
|
Mostly Clear
|
55°F |
0 to 5 mph
NE
|
|
Wednesday
Jun 3
|
Sunny
|
81°F |
0 to 3 mph
E
|
|
Wednesday Night
Jun 3
|
Mostly Clear
|
55°F |
2 mph
SE
|
|
Thursday
Jun 4
|
Sunny
|
85°F |
0 to 3 mph
S
|
|
Thursday Night
Jun 4
|
Partly Cloudy
|
62°F |
2 mph
S
|
|
Friday
Jun 5
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
87°F |
6 mph
SW
|
|
Friday Night
Jun 5
|
Chance Showers And Thunderstorms
|
66°F |
3 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Union.