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Marsh Lake, IL Weather Forecast
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Marsh Lake Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  |  |  |  | | |  | | | | |
| Mostly Cloudy | Chance of T-Storm | Chance of Showers | Partly Cloudy | Sunny | Partly Cloudy | Mostly Clear | Mostly Clear | Clear | Clear | Mostly Clear | Mostly Sunny |
| Hi: 90°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 50°FLo: 10°C | Hi: 75°FHi: 24°C Lo: 50°FLo: 10°C | Hi: 71°FHi: 22°C Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C Lo: 45°FLo: 7°C | Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C |
| POP: 90% | POP: 90% |
POP = Probability of Precipitation.
Weather Outlook Updated: 332 AM CDT Thu Oct 01 2026 
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Issued: 311 AM CDT Thu Oct 1 2026
Key Messages
- Above average highs in the upper 80s and low 90s are expected Thursday, followed by cooler temperatures in the low and mid 70s beginning Friday and continuing into the weekend.
- A cold front begins to move in from west to east Thursday night into Friday bringing rain showers with PoPs peaking (80-100%) in the morning and early afternoon hours. No severe weather is expected, but some rumbles of thunder are possible.
- Small rain chances (10-30%) linger Saturday, but high pressure will bu...