Weather for Southport, Connecticut
Current Weather
Five Day Weather Forecast
Sun
H: 51°F
L: 41°F
Mon
H: 48°F
L: 35°F
Tue
H: 51°F
L: 34°F
Wed
H: 57°F
L: 46°F
Thu
H: 62°F
L: 47°F
Air Quality
Nitrogen Dioxide: 11.05 μg/m3
Sulphur Dioxide: 2.15 μg/m3
Ozone: 61 μg/m3
Astronomical
Sun Transit: 12:52 AM
Sunset: 7:37 PM
Daylight: 13 hrs 30 mins
Moon Transit: 2:55 PM
Moonset: 10:58 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%
Best Times for Fishing or Hunting
Major Periods
4:13 AM - 6:43 AM2:25 PM - 4:55 PM
Minor Periods
10:28 PM - 11:58 PM6:33 AM - 8:03 AM
Action Rating: 3 out of 5
Frost Advisory issued April 19 at 2:18PM EDT until April 20 at 8:00AM EDT by NWS Upton NY
Effective: Sun April 19, 2026, 2:18 PM
Expires: Sun April 19, 2026, 10:30 PM
* WHAT...For the Frost Advisory, temperatures in the mid 30s will result in frost formation. For the Freeze Warning, sub-freezing temperatures from the mid 20s to lower 30s expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...For the Frost Advisory, from midnight tonight to 8 AM EDT Monday. For the Freeze Warning, from midnight Monday Night to 9 AM EDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
Freeze Warning issued April 19 at 2:18PM EDT until April 21 at 9:00AM EDT by NWS Upton NY
Effective: Sun April 19, 2026, 2:18 PM
Expires: Sun April 19, 2026, 10:30 PM
* WHAT...For the Frost Advisory, temperatures in the mid 30s will result in frost formation. For the Freeze Warning, sub-freezing temperatures from the mid 20s to lower 30s expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...For the Frost Advisory, from midnight tonight to 8 AM EDT Monday. For the Freeze Warning, from midnight Monday Night to 9 AM EDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
Freeze Warning issued April 19 at 2:18PM EDT until April 21 at 9:00AM EDT by NWS Upton NY
Effective: Sun April 19, 2026, 2:18 PM
Expires: Sun April 19, 2026, 10:30 PM
* WHAT...Sub-freezing temperatures from the mid 20s to lower 30s expected. * WHERE...In Connecticut, Northern Fairfield, Northern Middlesex, Northern New Haven, and Northern New London Counties. In New Jersey, Essex, and Union Counties. In New York, Orange and Putnam Counties. * WHEN...From midnight Monday Night to 9 AM EDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation.
Take steps now to protect tender plants from the cold.
Freeze Watch issued April 19 at 2:18PM EDT until April 21 at 9:00AM EDT by NWS Upton NY
Effective: Sun April 19, 2026, 2:18 PM
Expires: Sun April 19, 2026, 10:30 PM
* WHAT...Sub-freezing temperatures as low as 32 possible. * WHERE...Nassau County. * WHEN...From late Monday night through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation.
Take steps now to protect tender plants from the cold.
Weather Forecast
Air Quality
Nitrogen Dioxide: 7.24 μg/m3
Sulphur Dioxide: 1.96 μg/m3
Ozone: 78.92 μg/m3
Astronomical
Sun Transit: 12:52 AM
Sunset: 7:37 PM
Daylight: 13 hrs 30 mins
Moon Transit: 2:55 PM
Moonset: 10:58 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%
Best Times for Fishing or Hunting
Major Periods
4:13 AM - 6:43 AM2:25 PM - 4:55 PM
Minor Periods
10:28 PM - 11:58 PM6:33 AM - 8:03 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.38 μg/m3
Sulphur Dioxide: 2.06 μg/m3
Ozone: 74.36 μg/m3
Astronomical
Sun Transit: 12:52 AM
Sunset: 7:38 PM
Daylight: 13 hrs 32 mins
Moon Transit: 4:00 PM
Moonset: 12:11 PM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%
Best Times for Fishing or Hunting
Major Periods
5:16 AM - 7:46 AM3:30 PM - 6:00 PM
Minor Periods
12:00 AM - 12:00 AM7:22 AM - 8:52 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 7.07 μg/m3
Sulphur Dioxide: 2.45 μg/m3
Ozone: 81.8 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:39 PM
Daylight: 13 hrs 35 mins
Moon Transit: 5:04 PM
Moonset: 12:11 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%
Best Times for Fishing or Hunting
Major Periods
6:21 AM - 8:51 AM4:34 PM - 7:04 PM
Minor Periods
8:22 AM - 9:52 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 10.78 μg/m3
Sulphur Dioxide: 3.63 μg/m3
Ozone: 91.28 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:41 PM
Daylight: 13 hrs 37 mins
Moon Transit: 6:06 PM
Moonset: 1:13 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%
Best Times for Fishing or Hunting
Major Periods
7:25 AM - 9:55 AM5:36 PM - 8:06 PM
Minor Periods
9:32 AM - 11:02 AM12:43 AM - 2:13 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 13.95 μg/m3
Sulphur Dioxide: 4.17 μg/m3
Ozone: 74.54 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 7:42 PM
Daylight: 13 hrs 40 mins
Moon Transit: 7:04 PM
Moonset: 2:02 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%
Best Times for Fishing or Hunting
Major Periods
8:25 AM - 10:55 AM6:34 PM - 9:04 PM
Minor Periods
10:47 AM - 12:17 AM1:32 AM - 3:02 AM
Action Rating: 2 out of 5