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Mc Pherson, IL Weather Forecast
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Mc Pherson Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
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| Chance of T-Storm | Chance of T-Storm | Showers Likely | Chance of Showers | Chance of Showers | Chance of T-Storm | Chance of Showers | Partly Cloudy | Chance of Showers | Showers | Chance of Showers | Mostly Cloudy |
| Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 70°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 70°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 75°FHi: 24°C | Hi: 71°FHi: 22°C Lo: 59°FLo: 15°C |
| POP: 50% | POP: 70% | POP: 70% | POP: 50% | POP: 50% | POP: 40% | POP: 40% | POP: 40% | POP: 60% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 306 AM CDT Tue Sep 15 2026 
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Issued: 259 AM CDT Tue Sep 15 2026
Key Messages
- Active pattern to continue into the weekend with numerous rounds of showers and storms including heavy rainfall at times.
- There is Marginal Risk, Level 1 out of 5, for severe storms in west-central Illinois and south of Highway 34 this afternoon/evening. Isolated damaging winds is the primary hazard.
- An elevated flash flooding risk could develop mid-week with repeating rounds of storms. There is a medium to high chance (40-75%) for portions of eastern Iowa to see over 2 inches of rai...