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Southport, CT - Southport Harbor Marine Weather Forecast

Overnight - 18°F
Dec 28, 2025
5 mph NW
Mostly Clear
Mostly clear, with a low around 18. Wind chill values as low as 11. Northwest wind around 5 mph.
Sunday - 37°F
Dec 28, 2025
3 to 8 mph W
Partly Sunny then Slight Chance Light Rain
A slight chance of rain after 4pm. Partly sunny. High near 37, with temperatures falling to around 32 in the afternoon. Wind chill values as low as 11. West wind 3 to 8 mph. Chance of precipitation is 20%.
Sunday Night - 32°F
Dec 28, 2025
5 to 9 mph SW
Light Rain
Rain. Cloudy. Low around 32, with temperatures rising to around 41 overnight. Southwest wind 5 to 9 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday - 49°F
Dec 29, 2025
8 to 14 mph SW
Light Rain
Rain. Cloudy. High near 49, with temperatures falling to around 43 in the afternoon. Southwest wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday Night - 25°F
Dec 29, 2025
15 mph W
Light Rain Likely then Partly Cloudy
Rain likely before 7pm. Partly cloudy. Low around 25, with temperatures rising to around 27 overnight. West wind around 15 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.
Tuesday - 32°F
Dec 30, 2025
15 to 20 mph W
Partly Sunny
Partly sunny. High near 32, with temperatures falling to around 30 in the afternoon.
Tuesday Night - 24°F
Dec 30, 2025
10 to 15 mph W
Mostly Cloudy
Mostly cloudy, with a low around 24.
Wednesday - 35°F
Dec 31, 2025
10 to 14 mph W
Partly Sunny
Partly sunny, with a high near 35.
Wednesday Night - 23°F
Dec 31, 2025
9 mph W
Slight Chance Light Snow
A slight chance of snow after 7pm. Mostly cloudy, with a low around 23.
New Year's Day - 32°F
Jan 01, 2026
10 mph W
Chance Light Snow
A chance of snow. Partly sunny, with a high near 32. Chance of precipitation is 30%.
Thursday Night - 18°F
Jan 01, 2026
8 mph NW
Chance Light Snow
A chance of snow before 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Friday - 30°F
Jan 02, 2026
6 to 10 mph NW
Mostly Sunny
Mostly sunny, with a high near 30.
Friday Night - 18°F
Jan 02, 2026
7 mph W
Partly Cloudy
Partly cloudy, with a low around 18.
Saturday - 35°F
Jan 03, 2026
6 to 10 mph W
Mostly Sunny
Mostly sunny, with a high near 35.

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