Union, IL Weather Forecast
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Union Weather Forecast
| EARLY THIS MORNING | TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | VETERANS DAY |
| Mostly Cloudy | Partly Cloudy | Clearing | Partly Cloudy | Partly Cloudy | Mostly Sunny | Clear | Mostly Sunny | Mostly Clear | Sunny | Partly Cloudy | Partly Cloudy |
| Hi: 39°FHi: 4°C | Hi: 45°FHi: 7°C | Lo: 29°FLo: -2°C | Hi: 50°FHi: 10°C | Lo: 35°FLo: 2°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C | Hi: 61°FHi: 16°C | Lo: 40°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C | Hi: 59°FHi: 15°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 346 AM CST Fri Nov 06 2026 

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Issued: 259 AM CST Fri Nov 6 2026
Key Messages
- Lake effect rain showers may periodically affect portions of Porter County, IN through tonight.
- Below freezing temperatures may be observed across a large portion of northern Illinois tonight. Near or below freezing temperatures may then be observed once again Saturday night and Sunday night in some locations.
- Dry conditions and a warming trend are expected this weekend into early next week.
Discussion
... Issued at 259 AM CST Fri Nov 6 2026
Early morning GOES water vapor imagery loops ...
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