Weather WorldPatterson Lake, IL Weather Forecast
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Patterson Lake Weather Forecast
| REST OF TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  |  |  |  | | | | | | |
| Isolated Showers | Mostly Cloudy | Partly Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Clear | Sunny |
| Hi: 51°FHi: 11°C | Lo: 31°FLo: -1°C | Hi: 45°FHi: 7°C | Lo: 29°FLo: -2°C | Hi: 49°FHi: 9°C | Hi: 51°FHi: 11°C Lo: 25°FLo: -4°C | Hi: 51°FHi: 11°C Lo: 25°FLo: -4°C | Hi: 51°FHi: 11°C Lo: 25°FLo: -4°C | Hi: 51°FHi: 11°C Lo: 25°FLo: -4°C | Lo: 29°FLo: -2°C | Hi: 59°FHi: 15°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 727 AM CST Thu Nov 12 2026 
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Issued: 450 AM CST Thu Nov 12 2026
Key Messages
- The first snow flakes of the season are on tap for locations along and northeast of a Bloomington to Mattoon line late tonight into Friday morning as bands of light rain/snow showers from Lake Michigan arrive from the northeast.
- Below normal temperatures will prevail through the upcoming weekend before a gradual warming trend gets underway next week.
Discussion
... Issued at 401 AM CST Thu Nov 12 2026
**** Blustery Conditions Today ****
09z/3am satellite imagery shows partial clearing ac...