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Quincy Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  |  |  | | | | |  | | |  |
| Chance of T-Storm | Showers Likely | Chance of Showers | Partly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Sunny |
| Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C | Lo: 50°FLo: 10°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C |
| POP: 100% | POP: 70% | POP: 40% | POP: 20% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 406 PM EDT Sun Sep 20 2026 
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Issued: 241 PM EDT Sun Sep 20 2026
Key Messages
1) A cold front will move through the area tonight with additional showers and thunderstorms along and north of the front that could impact portions of the area with heavy rain and flooding
2) Cooler and showery weather will occur into midweek.
Discussion
...
KEY MESSAGE 1)
Active weather to continue overnight with the potential for heavy rain and flooding. A wavy surface frontal boundary is bisecting ILN/s area. Forcing will increase late in the afternoon into this evening as a short wav...