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Town of Seymour, CTSeymour, CT Weather Forecast
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Seymour Weather Forecast
| THIS AFTERNOON | TONIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 | |  |  |  |  |  | | | |  | |
| Chance of Rain | Rain | Clearing | Partly Cloudy | Partly Sunny | Chance of Showers | Mostly Sunny | Partly Cloudy | Sunny | Partly Cloudy | Chance of Showers | Chance of Showers |
| Hi: 60°FHi: 16°C | Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C |
| POP: 100% | POP: 100% | POP: 30% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1114 AM EDT Sun Oct 11 2026 
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Issued: 130 PM EDT Sun Oct 11 2026
Key Messages
1) A warm front will approach today. Low pressure developing along the front will pass south of Long Island late tonight into early Monday, with overall minor impacts.
2) Possible isolated minor coastal flooding for NY Harbor, western Long Island Sound, and the western south shore bays of Long Island during the Monday morning and Tuesday morning high tide cycles. Possible high surf for ocean beaches, especially for Long Island ocean beaches.
3) Chance of showers and possible thundersto...