Weather in Union, IL
Updated 2026-09-26 08:45 local time · ZIP codes 60180
Partly Cloudy
No government weather alerts were returned for this location at the latest update.
Next hours
54°14% rain
58°16% rain60°13% rain63°12% rain64°11% rain65°11% rain65°4% rain64°11% rain61°15% rain60°18% rain
57°16% rain55°14% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 19%).
It feels like 52°F with winds near 6 mph.
65°F, 4% rain chance and 6 mph wind.
Visibility is around 6 mi; gusts may reach 15 mph.
Current temperature is 54°F, wind 6 mph, rain chance up to 19%.
UV index is 0.
Local weather characteristics in Union
Illinois has four distinct seasons with hot, humid summers, cold winters, strong frontal changes and frequent spring and summer thunderstorms.
Union is part of the Midwest weather region. The forecast point is near 42.23°N latitude and 88.54°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Union weather today
Partly Cloudy and 54°F in Union, IL. Today's high is 65°F with a 11% rain chance. Winds are around 6 mph with gusts near 12 mph. Relative humidity is 83%, pressure is 30.24 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Union
Sunrise is at 06:45 AM and sunset is at 06:45 PM. Tomorrow's forecast calls for Overcast with a high near 68°F and a low near 52°F. The maximum rain chance is 12%.