Water Temperature of the Mill River in Southport, CT

Current Water Temperature

49.5°F

Measurement Time: Thursday, April 18, 2024, 5:06 AM 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

41.5°F
Fog
Fog
36.9°F
41.6°F
96%
SSW 7.2 mph
15 mph
38.7°F
39.2°F
0 in
60%
0 mi
1008 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Sun
H: 66°F
L: 37°F
Mist
Mon
H: 43°F
L: 27°F
Fog
Tue
H: 41°F
L: 33°F
Patchy rain nearby
Wed
H: 56°F
L: 38°F
Patchy rain nearby
Thu
H: 53°F
L: 39°F

Air Quality

AQI: 1 - Good
PM2.5: 15.95 μg/m3
PM10: 16.15 μg/m3
Carbon Monoxide: 192.85 μg/m3
Nitrogen Dioxide: 22.75 μg/m3
Sulphur Dioxide: 7.55 μg/m3
Ozone: 37 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 12:00 AM
Sunset: 6:52 PM
Daylight: 11 hrs 36 mins
Moonrise: 12:36 AM
Moon Transit: 4:30 AM
Moonset: 9:18 AM
Moon Phase: Waning Gibbous
Moon Illumination: 69.3%

Best Times for Fishing or Hunting

Major Periods

4:00 AM - 6:30 AM
6:42 PM - 9:12 PM

Minor Periods

8:48 AM - 10:18 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued March 7 at 5:29PM EST until March 8 at 9:00AM EDT by NWS Upton NY

Effective: Sat March 7, 2026, 5:29 PM
Expires: Sun March 8, 2026, 9:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...Until 9 AM EDT Sunday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Areas of dense fog might not occur until after 7 PM this evening for some inland areas, but should occur by 9 to 10 PM.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.


Dense Fog Advisory issued March 8 at 12:47AM EST until March 8 at 9:00AM EDT by NWS Upton NY

Effective: Sun March 8, 2026, 12:47 AM
Expires: Sun March 8, 2026, 9:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Sunday, March 8, 2026

Weather Forecast

Patchy rain nearby
65.7°F
37.4°F
47°F
91%
0.03 in
88%
0%
9.8 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 12.54 μg/m3
PM10: 12.92 μg/m3
Carbon Monoxide: 202.53 μg/m3
Nitrogen Dioxide: 24.79 μg/m3
Sulphur Dioxide: 6.05 μg/m3
Ozone: 38.64 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 12:00 AM
Sunset: 6:52 PM
Daylight: 11 hrs 36 mins
Moonrise: 12:36 AM
Moon Transit: 4:30 AM
Moonset: 9:18 AM
Moon Phase: Waning Gibbous
Moon Illumination: 69.3%

Best Times for Fishing or Hunting

Major Periods

4:00 AM - 6:30 AM
6:42 PM - 9:12 PM

Minor Periods

8:48 AM - 10:18 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, March 9, 2026

Weather Forecast

Mist
43°F
26.8°F
36.2°F
96%
0 in
0%
0%
11 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 8.34 μg/m3
PM10: 8.73 μg/m3
Carbon Monoxide: 247.89 μg/m3
Nitrogen Dioxide: 19.88 μg/m3
Sulphur Dioxide: 9.12 μg/m3
Ozone: 65.12 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:00 AM
Sunset: 6:53 PM
Daylight: 11 hrs 39 mins
Moonrise: 12:41 AM
Moon Transit: 5:17 AM
Moonset: 9:49 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%

Best Times for Fishing or Hunting

Major Periods

4:47 AM - 7:17 AM
7:30 PM - 10:00 PM

Minor Periods

9:19 AM - 10:49 AM
12:11 AM - 1:41 AM

Action Rating: 3 out of 5

Tuesday, March 10, 2026

Weather Forecast

Fog
41.2°F
32.9°F
38°F
98%
0 in
0%
0%
8.9 mph
1


Air Quality

AQI: 2 - Moderate
PM2.5: 20.27 μg/m3
PM10: 20.52 μg/m3
Carbon Monoxide: 342.93 μg/m3
Nitrogen Dioxide: 32.01 μg/m3
Sulphur Dioxide: 10.13 μg/m3
Ozone: 48.04 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:00 AM
Sunset: 6:55 PM
Daylight: 11 hrs 42 mins
Moonrise: 1:43 AM
Moon Transit: 6:07 AM
Moonset: 10:28 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%

Best Times for Fishing or Hunting

Major Periods

5:37 AM - 8:07 AM
8:20 PM - 10:50 PM

Minor Periods

9:58 AM - 11:28 AM
1:13 AM - 2:43 AM

Action Rating: 2 out of 5

Wednesday, March 11, 2026

Weather Forecast

Patchy rain nearby
55.9°F
38.3°F
47.5°F
95%
0.01 in
88%
0%
9.4 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 10.99 μg/m3
PM10: 11.32 μg/m3
Carbon Monoxide: 216.64 μg/m3
Nitrogen Dioxide: 20.65 μg/m3
Sulphur Dioxide: 3.69 μg/m3
Ozone: 53.32 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:00 AM
Sunset: 6:56 PM
Daylight: 11 hrs 44 mins
Moonrise: 2:42 AM
Moon Transit: 6:58 AM
Moonset: 11:13 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%

Best Times for Fishing or Hunting

Major Periods

6:28 AM - 8:58 AM
9:12 PM - 11:42 PM

Minor Periods

10:43 AM - 12:13 AM
2:12 AM - 3:42 AM

Action Rating: 2 out of 5

Thursday, March 12, 2026

Weather Forecast

Patchy rain nearby
52.6°F
39°F
48.8°F
92%
0.04 in
85%
0%
25.9 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 12 μg/m3
PM10: 13.05 μg/m3
Carbon Monoxide: 158.17 μg/m3
Nitrogen Dioxide: 12.87 μg/m3
Sulphur Dioxide: 2.21 μg/m3
Ozone: 57.5 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:00 AM
Sunset: 6:57 PM
Daylight: 11 hrs 47 mins
Moonrise: 3:34 AM
Moon Transit: 7:50 AM
Moonset: 12:08 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:20 AM - 9:50 AM
12:00 AM - 12:00 AM

Minor Periods

11:38 AM - 1:08 PM
3:04 AM - 4:34 AM

Action Rating: 3 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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