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Union Star, MO Weather
It is 72°F and cloudy in Union Star, MO, observed at 4:40 PM CDT. Today: Partly Sunny, high 72°F, low 56°F. Hourly and 10-day forecast from the National Weather Service. Times are local (CDT).
Union Star, MO current weather
72°F
Cloudy
H 72° / L 56°Feels like 71°
Observed at St. Joseph, Rosecrans Memorial Airport (22 mi away), 10/29/2026, 4:40 PM CDT
10-day forecast
Tap a day for details
Today10/2966% chance of precipitationLow 56°High 72°
This Afternoon: Partly sunny, with a high near 72. East wind around 10 mph.
Tonight: A chance of showers and thunderstorms between 8pm and 4am, then showers and thunderstorms likely. Mostly cloudy, with a low around 56. East wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Partly SunnyFri10/3060% chance of precipitationLow 55°High 70°
Friday: Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms between 7am and 8am, then showers and thunderstorms likely. Cloudy, with a high near 70. East southeast wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night: A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 10pm, then showers and thunderstorms likely between 10pm and 5am. Cloudy, with a low around 55. South southeast wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers And Thunderstorms LikelySat10/3138% chance of precipitationLow 53°High 70°
Saturday: A chance of rain showers before 1pm. Cloudy, with a high near 70. Southeast wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Saturday Night: A chance of rain showers after 7pm. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Chance Rain ShowersSun11/147% chance of precipitationLow 56°High 72°
Sunday: Partly sunny, with a high near 72.
Sunday Night: A chance of rain showers. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.
Partly SunnyMon11/288% chance of precipitationLow 57°High 73°
Monday: Rain showers before noon, then showers and thunderstorms. Mostly cloudy, with a high near 73. Chance of precipitation is 90%.
Monday Night: Showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 90%.
Rain ShowersTue11/380% chance of precipitationLow 50°High 70°
Tuesday: Rain showers. Mostly cloudy, with a high near 70. Chance of precipitation is 80%.
Tuesday Night: A chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Rain ShowersWed11/430% chance of precipitationLow 43°High 65°
Wednesday: A chance of rain showers. Mostly cloudy, with a high near 65. Chance of precipitation is 30%.
Wednesday Night: A slight chance of rain showers. Partly cloudy, with a low around 43.
Chance Rain ShowersThu11/5Model blend22% chance of precipitationLow 41°High 65°
Thursday: Partly cloudy, slight chance of rain. High near 65°. Low that night near 41°. About 0.04 in of precipitation.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.
Fri11/6Model blend12% chance of precipitationLow 40°High 64°
Friday: Mostly cloudy. High near 64°. Low that night near 40°.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.
Sat11/7Model blend19% chance of precipitationLow 41°High 65°
Saturday: Mostly cloudy. High near 65°. Low that night near 41°. About 0.02 in of precipitation.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.
Forecast for 39.979, -94.599 from the NWS EAX office, updated 10/29/2026, 11:27 AM PT · Official forecast on weather.gov
Days 8 to 10: NOAA National Blend of Models, station KSTJ (St Joseph/Rosecrans Mem, 22 mi), model run 10/29/2026, 3:00 PM CDT
From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.
Radar and satellite
National radarNEXRAD (up to 24 hours) and GOES
Frequently asked questions
- What is the weather in Union Star, MO right now?
- The latest observation from St. Joseph, Rosecrans Memorial Airport was 72°F and cloudy, reported at 10/29/2026, 4:40 PM CDT.
- What is the high temperature today in Union Star, MO?
- The National Weather Service forecast for this afternoon calls for a high near 72°F. Partly Sunny.
- What is the 10-day forecast for Union Star, MO?
- The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 5 to Nov 7) come from the NOAA National Blend of Models, with highs of 64°F to 65°F. Model guidance this far out often changes.
- What time is sunrise and sunset in Union Star, MO today?
- Sunrise is about 7:44 AM CDT and sunset is about 6:19 PM CDT (calculated for the center of the area, within a few minutes).
- What is the normal October weather in Union Star, MO?
- At Cosby 2w, the 1991 to 2020 normal high in October is 66°F and the normal low is 42°F.
Nearby hazards
Missouri hazardsSevere storm and flash flood outlooks, expected rain, river flooding and wildfires near this area
- Severe storm outlook today:General thunderstormsOutlook map
- Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
- River gauges within 40 miles at or above flood stage: None reported
- Active wildfires within 50 miles: None reported
UV and air quality forecast
EPA and AirNow
- AQI forecast today (Kansas City)
- 48GoodOzone
- AQI forecast tomorrow (Kansas City)
- 43GoodOzone
Drought
By countyDeKalb County, week of 10/27/2026
No drought or abnormal dryness in this county.
Sun and moon
Local time, center of the area
- Sunrise
- 7:44 AM
- Sunset
- 6:19 PM
- Daylight
- 10 hr 35 min
- Moon
- Waning Gibbous 85% lit
- First light (civil dawn)
- 7:16 AM
- Last light (civil dusk)
- 6:47 PM
- Moonrise
- 8:49 PM
- Moonset
- 11:59 AM
Normal October weather
ClimateNormal October high 66°, low 42°, precipitation 3.04 in for the month. 1991 to 2020 normals at Cosby 2w, 10 mi away.
Other places nearby
Data sources
- National Weather Service APINOAA · Official site
- National Blend of Models (NBM) text guidanceNOAA National Weather Service · Official site
- Convective Outlooks and Storm ReportsNOAA Storm Prediction Center · Official site
- Excessive Rainfall Outlook and Quantitative Precipitation ForecastsNOAA Weather Prediction Center · Official site
- National Water Prediction ServiceNOAA National Weather Service · Official site
- WFIGS Current Wildland Fire IncidentsNational Interagency Fire Center · Official site
- UV Index Forecast (Envirofacts)U.S. Environmental Protection Agency and NOAA · Official site
- AirNowU.S. Environmental Protection Agency · Official site
- NWS HeatRisk (experimental)NOAA National Weather Service · Official site
- U.S. Drought MonitorNational Drought Mitigation Center, USDA and NOAA · Official site
- BEACON 2.0 Beach Advisory and Closing On-line NotificationU.S. Environmental Protection Agency · Official site
- U.S. Climate Normals 1991-2020NOAA National Centers for Environmental Information · Official site
- Tides & Currents (CO-OPS API)NOAA Center for Operational Oceanographic Products and Services · Official site
- NEXRAD radar tilesIowa Environmental Mesonet, Iowa State University · Official site
- GOES-East and GOES-West GeoColor imageryNOAA NESDIS Center for Satellite Applications and Research · Official site
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About this data
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