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Harmons Lake Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | TUESDAY |
 |  | |  |  |  | | | | | |  |
| Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Chance of Showers |
| Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C |
| POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 351 PM EDT Tue Sep 22 2026 
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Issued: 206 PM EDT Tue Sep 22 2026
Key Messages
- Cooler weather will continue through the upcoming week, with afternoon temperatures staying below seasonal averages
- A few light showers tonight into tomorrow, mainly across eastern Indiana
- Persistent mostly cloudy skies will begin to break towards Friday
Discussion
(This evening through Tuesday)... Issued at 202 PM EDT Tue Sep 22 2026
Overview.
Central Indiana is set for a prolonged stretch of cool, dry autumn weather. High pressure anchored to the north and northeast will keep a continu...