Water Temperature of the Mill River in Southport, CT

Current Water Temperature

32.0°F

Measurement Time: Tuesday, September 8, 2026, 1:03 PM EDT

Temperature Locations

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Local Points of Interest

Perry's Green

Mill River

Station Name: MILL RIVER AT PEQUOT YACHT CLUB AT SOUTHPORT, CT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
657 Harbor Rd
Southport, CT 06890
Fairfield County

GPS Coordinates: 41.1325083, -73.2824833

Nearby Water Temperatures

Mill River, Fairfield, CT (0.6 mi)
Saugatuck River, Westport Village, CT (4.6 mi)
Rooster River, Bridgeport, CT (4.6 mi)
Saugatuck River, Westport, CT (4.8 mi)
Bridgeport Harbor, Bridgeport, CT (6 mi)
Norwalk River, Norwalk, CT (6.8 mi)
Norwalk Harbor, Norwalk, CT (7 mi)
Norwalk River, Norwalk, CT (7.3 mi)
Housatonic River, Stratford, CT (9.2 mi)
Flax Pond, Old Field, NY (13.8 mi)
New Haven Harbor, New Haven, CT (22.1 mi)
Frost Creek, Lattingtown, NY (22.6 mi)
Naugatuck River, Beacon Falls, CT (24.3 mi)
East Creek, Sands Point, NY (28.9 mi)
Great South Bay, West Sayville, NY (30.1 mi)

Weather for Southport, Connecticut

Current Weather

80°F
Mostly Sunny
Mostly Sunny
56%
W 5 mph
63°F

Weather Forecast

Mostly Sunny
This Afternoon
81°F - Mostly Sunny
Partly Cloudy
Tonight
64°F - Partly Cloudy
Mostly Sunny
Wednesday
83°F - Mostly Sunny
Partly Cloudy
Wednesday Night
71°F - Partly Cloudy
Mostly Sunny then Chance Rain Showers
Thursday
84°F - Mostly Sunny then Chance Rain Showers
Chance Rain Showers
Thursday Night
63°F - Chance Rain Showers
Sunny
Friday
76°F - Sunny
Mostly Clear
Friday Night
58°F - Mostly Clear
Mostly Sunny
Saturday
77°F - Mostly Sunny
Partly Cloudy then Slight Chance Rain Showers
Saturday Night
64°F - Partly Cloudy then Slight Chance Rain Showers
Chance Rain Showers
Sunday
80°F - Chance Rain Showers
Chance Rain Showers
Sunday Night
65°F - Chance Rain Showers
Mostly Sunny
Monday
79°F - Mostly Sunny
Partly Cloudy
Monday Night
62°F - Partly Cloudy

Astronomical

Sunrise: 6:27 AM
Sun Transit: 12:50 AM
Sunset: 7:14 PM
Daylight: 12 hrs 47 mins
Moonrise: 3:16 AM
Moon Transit: 10:46 AM
Moonset: 6:02 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:07 AM - 2:37 AM
10:16 AM - 12:46 AM

Minor Periods

5:32 PM - 7:02 PM
2:46 AM - 4:16 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 12:50 AM
Sunset: 7:14 PM
Daylight: 12 hrs 47 mins
Moonrise: 3:16 AM
Moon Transit: 10:46 AM
Moonset: 6:02 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:07 AM - 2:37 AM
10:16 AM - 12:46 AM

Minor Periods

5:32 PM - 7:02 PM
2:46 AM - 4:16 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 12:50 AM
Sunset: 7:14 PM
Daylight: 12 hrs 47 mins
Moonrise: 3:16 AM
Moon Transit: 10:46 AM
Moonset: 6:02 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:07 AM - 2:37 AM
10:16 AM - 12:46 AM

Minor Periods

5:32 PM - 7:02 PM
2:46 AM - 4:16 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:50 AM
Sunset: 7:12 PM
Daylight: 12 hrs 44 mins
Moonrise: 4:33 AM
Moon Transit: 11:38 AM
Moonset: 6:29 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

1:01 AM - 3:31 AM
11:08 AM - 1:38 PM

Minor Periods

5:59 PM - 7:29 PM
4:03 AM - 5:33 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:50 AM
Sunset: 7:12 PM
Daylight: 12 hrs 44 mins
Moonrise: 4:33 AM
Moon Transit: 11:38 AM
Moonset: 6:29 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

1:01 AM - 3:31 AM
11:08 AM - 1:38 PM

Minor Periods

5:59 PM - 7:29 PM
4:03 AM - 5:33 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:29 AM
Sun Transit: 12:50 AM
Sunset: 7:11 PM
Daylight: 12 hrs 42 mins
Moonrise: 5:47 AM
Moon Transit: 12:26 AM
Moonset: 6:53 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:50 AM - 4:20 AM
11:56 AM - 2:26 PM

Minor Periods

6:23 PM - 7:53 PM
5:17 AM - 6:47 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:29 AM
Sun Transit: 12:50 AM
Sunset: 7:11 PM
Daylight: 12 hrs 42 mins
Moonrise: 5:47 AM
Moon Transit: 12:26 AM
Moonset: 6:53 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:50 AM - 4:20 AM
11:56 AM - 2:26 PM

Minor Periods

6:23 PM - 7:53 PM
5:17 AM - 6:47 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:49 AM
Sunset: 7:09 PM
Daylight: 12 hrs 39 mins
Moonrise: 6:59 AM
Moon Transit: 1:12 PM
Moonset: 7:15 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

2:37 AM - 5:07 AM
12:42 AM - 3:12 PM

Minor Periods

6:45 PM - 8:15 PM
6:29 AM - 7:59 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:49 AM
Sunset: 7:09 PM
Daylight: 12 hrs 39 mins
Moonrise: 6:59 AM
Moon Transit: 1:12 PM
Moonset: 7:15 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

2:37 AM - 5:07 AM
12:42 AM - 3:12 PM

Minor Periods

6:45 PM - 8:15 PM
6:29 AM - 7:59 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 12:49 AM
Sunset: 7:07 PM
Daylight: 12 hrs 36 mins
Moonrise: 8:08 AM
Moon Transit: 1:57 PM
Moonset: 7:37 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:23 AM - 5:53 AM
1:27 PM - 3:57 PM

Minor Periods

7:07 PM - 8:37 PM
7:38 AM - 9:08 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 12:49 AM
Sunset: 7:07 PM
Daylight: 12 hrs 36 mins
Moonrise: 8:08 AM
Moon Transit: 1:57 PM
Moonset: 7:37 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:23 AM - 5:53 AM
1:27 PM - 3:57 PM

Minor Periods

7:07 PM - 8:37 PM
7:38 AM - 9:08 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:48 AM
Sunset: 7:05 PM
Daylight: 12 hrs 34 mins
Moonrise: 9:16 AM
Moon Transit: 2:42 PM
Moonset: 8:01 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

4:08 AM - 6:38 AM
2:12 PM - 4:42 PM

Minor Periods

7:31 PM - 9:01 PM
8:46 AM - 10:16 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:48 AM
Sunset: 7:05 PM
Daylight: 12 hrs 34 mins
Moonrise: 9:16 AM
Moon Transit: 2:42 PM
Moonset: 8:01 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

4:08 AM - 6:38 AM
2:12 PM - 4:42 PM

Minor Periods

7:31 PM - 9:01 PM
8:46 AM - 10:16 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:48 AM
Sunset: 7:04 PM
Daylight: 12 hrs 31 mins
Moonrise: 10:23 AM
Moon Transit: 3:28 PM
Moonset: 8:27 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

4:53 AM - 7:23 AM
2:58 PM - 5:28 PM

Minor Periods

7:57 PM - 9:27 PM
9:53 AM - 11:23 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:48 AM
Sunset: 7:04 PM
Daylight: 12 hrs 31 mins
Moonrise: 10:23 AM
Moon Transit: 3:28 PM
Moonset: 8:27 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

4:53 AM - 7:23 AM
2:58 PM - 5:28 PM

Minor Periods

7:57 PM - 9:27 PM
9:53 AM - 11:23 AM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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