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Harmony Lake Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 | | |  | | |  | |  |  |  | |
| Showers | Showers | Chance of Showers | Chance of Showers | Chance of Showers | Showers | Showers Likely | Chance of Showers | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny |
| Lo: 55°FLo: 13°C | Hi: 61°FHi: 16°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 50°FLo: 10°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C |
| POP: 70% | POP: 70% | POP: 50% | POP: 30% | POP: 70% | POP: 70% | POP: 60% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 232 AM EDT Mon Sep 21 2026 
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Issued: 405 AM EDT Mon Sep 21 2026
Key Messages
1) Below normal temperatures with occasional showers can be expected through Wednesday.
2) Dry conditions will return to end the week and will be accompanied by the coolest overnight low temperatures so far this season.
Discussion
... KEY MESSAGE 1... The local area resides between high pressure located north of the Great Lakes and low pressure over the Ohio Valley. Shallow cold advection continues this morning with northeasterly surface winds. While the heavier area of rain is exiting ...