7-Day Forecast 41.4°N 73.07°W (Text-Only)
NWS Forecast for: Seymour CT
Issued by: National Weather Service New York, NY
Last Update: 3:16 pm EDT Jul 15, 2025




Tonight: Patchy fog before 2am, then patchy fog after 3am. Otherwise, increasing clouds, with a low around 71. Light southwest wind.

Wednesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 91. Heat index values as high as 102. Calm wind becoming south 5 to 7 mph in the afternoon.

Wednesday Night: A 50 percent chance of showers and thunderstorms. Increasing clouds, with a low around 73. South wind around 6 mph becoming calm in the evening.

Thursday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 88. Heat index values as high as 101. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 73. Southwest wind around 6 mph. Chance of precipitation is 30%.

Friday: Sunny, with a high near 88.

Friday Night: Mostly clear, with a low around 63.

Saturday: Sunny, with a high near 85.

Saturday Night: Mostly cloudy, with a low around 67.

Sunday: A 50 percent chance of showers after 8am. Partly sunny, with a high near 84.

Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 67.

Monday: Mostly sunny, with a high near 84.

Monday Night: Partly cloudy, with a low around 64.

Tuesday: Mostly sunny, with a high near 83.



Seymour CT
 41.4°N 73.07°W (Elev. 98 ft)

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