Monticello, IN Weather Forecast
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Monticello Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
| Chance of T-Storm | Chance of T-Storm | Chance of Showers | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C | Lo: 49°FLo: 9°C |
| POP: 90% | POP: 90% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 343 PM EDT Sun Sep 20 2026 

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Issued: 410 PM EDT Sun Sep 20 2026
Key Messages
- A flash flood watch is in effect from portions of northern Indiana and northwest Ohio through late tonight. 1-2 inches of rain is possible along and south of US-30. Areas further south that received excessive rainfall this past week could see an exacerbation to any lingering flooding. Isolated thunderstorms are possible.
- Light rain chances continue through Monday afternoon, dwindling towards the evening. Cooler and trending drier through the week, with highs in the 60s, low 70s and l...
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