Union Star, MO Weather Forecast
Local 7-day forecast
Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Union Star, MO in one place.
A slight chance of showers and thunderstorms between 2am and 3am, then a chance of showers and thunderstorms between 3am and 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Southeast wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Union Star, 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: Jul 24, 2026 3:56 AM CDT.
The active forecast window currently covers Jul 24 to Jul 30, 2026 for Union Star, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 24 to Jul 30, 2026
- Latest sync
- Jul 24, 2026 3:56 AM CDT
- Forecast office
- EAX
- Source
- NOAA / NWS
Daily Outlook
This Week in Union Star
Monday looks like the warmest upcoming period in Union Star at 95 degrees F.
Overnight is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Sunday at about 5 to 12 mph S.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 24, 2026 3:56 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- EAX
- Radar station
- KEAX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms. Mostly cloudy, with a high near 76. South southeast wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
A slight chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms between midnight and 3am. Mostly cloudy, with a low around 68. South southeast wind 3 to 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 90. Heat index values as high as 99. South wind around 6 mph.
Partly cloudy, with a low around 72. South wind 2 to 6 mph.
Sunny, with a high near 94.
Mostly clear, with a low around 77.
Sunny, with a high near 95.
Mostly clear, with a low around 75.
Mostly sunny, with a high near 92.
Partly cloudy, with a low around 72.
Mostly sunny, with a high near 90.
Partly cloudy, with a low around 72.
Mostly sunny, with a high near 90.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 24
|
Slight Chance Showers And Thunderstorms
|
66°F |
6 mph
SE
|
|
Friday
Jul 24
|
Showers And Thunderstorms
|
76°F |
6 to 9 mph
SSE
|
|
Friday Night
Jul 24
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
68°F |
3 to 7 mph
SSE
|
|
Saturday
Jul 25
|
Mostly Sunny
|
90°F |
6 mph
S
|
|
Saturday Night
Jul 25
|
Partly Cloudy
|
72°F |
2 to 6 mph
S
|
|
Sunday
Jul 26
|
Sunny
|
94°F |
5 to 12 mph
S
|
|
Sunday Night
Jul 26
|
Mostly Clear
|
77°F |
12 mph
S
|
|
Monday
Jul 27
|
Sunny
|
95°F |
8 to 12 mph
SW
|
|
Monday Night
Jul 27
|
Mostly Clear
|
75°F |
3 to 7 mph
SSE
|
|
Tuesday
Jul 28
|
Mostly Sunny
|
92°F |
7 mph
E
|
|
Tuesday Night
Jul 28
|
Partly Cloudy
|
72°F |
6 mph
E
|
|
Wednesday
Jul 29
|
Mostly Sunny
|
90°F |
6 to 9 mph
ESE
|
|
Wednesday Night
Jul 29
|
Partly Cloudy
|
72°F |
6 to 9 mph
ESE
|
|
Thursday
Jul 30
|
Mostly Sunny
|
90°F |
7 to 10 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Union Star.