Union, MO Weather Forecast
Local 7-day forecast
Isolated Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Union, MO in one place.
Isolated showers and thunderstorms between 4am and 5am, then scattered showers and thunderstorms. Mostly cloudy, with a low around 68. Southwest wind around 7 mph. Chance of precipitation is 40%.
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: Apr 15, 2026 4:20 AM CDT.
The active forecast window currently covers Apr 15 to Apr 21, 2026 for Union, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 4:20 AM 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.
Saturday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Saturday at about 7 to 12 mph W.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 4:20 AM 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
Scattered showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Scattered showers and thunderstorms before 8pm, then showers and thunderstorms between 8pm and 3am, then scattered showers and thunderstorms between 3am and 5am. Mostly cloudy, with a low around 60. Southwest wind 5 to 9 mph. Chance of precipitation is 80%.
Scattered rain showers between 7am and 1pm, then scattered showers and thunderstorms. Mostly sunny, with a high near 83. Southwest wind around 7 mph. Chance of precipitation is 40%.
Scattered showers and thunderstorms before 7pm. Mostly clear, with a low around 59. Southwest wind around 3 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly sunny, with a high near 67. Chance of precipitation is 70%.
A chance of rain showers before 1am. Partly cloudy, with a low around 38. Chance of precipitation is 30%.
Sunny, with a high near 65.
Clear, with a low around 39.
Sunny, with a high near 73.
Mostly clear, with a low around 48.
Sunny, with a high near 77.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Apr 15
|
Isolated Showers And Thunderstorms
|
68°F |
7 mph
SW
|
|
Wednesday
Apr 15
|
Scattered Showers And Thunderstorms then Chance Showers And Thunderstorms
|
82°F |
6 to 10 mph
SW
|
|
Wednesday Night
Apr 15
|
Scattered Showers And Thunderstorms then Showers And Thunderstorms
|
60°F |
5 to 9 mph
SW
|
|
Thursday
Apr 16
|
Scattered Rain Showers
|
83°F |
7 mph
SW
|
|
Thursday Night
Apr 16
|
Scattered Showers And Thunderstorms then Mostly Clear
|
59°F |
3 mph
SW
|
|
Friday
Apr 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
87°F |
2 to 10 mph
S
|
|
Friday Night
Apr 17
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
50°F |
8 mph
S
|
|
Saturday
Apr 18
|
Showers And Thunderstorms Likely
|
67°F |
7 to 12 mph
W
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
38°F |
5 to 9 mph
NW
|
|
Sunday
Apr 19
|
Sunny
|
65°F |
5 to 8 mph
W
|
|
Sunday Night
Apr 19
|
Clear
|
39°F |
5 mph
SW
|
|
Monday
Apr 20
|
Sunny
|
73°F |
2 to 7 mph
S
|
|
Monday Night
Apr 20
|
Mostly Clear
|
48°F |
6 mph
S
|
|
Tuesday
Apr 21
|
Sunny
|
77°F |
5 to 8 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Union.