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

46.9°F
Overcast
Overcast
41.7°F
42°F
45%
NNW 11.6 mph
16.5 mph
36.6°F
25.5°F
0 in
100%
9 mi
1010 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 57°F
L: 40°F
Partly Cloudy
Mon
H: 65°F
L: 47°F
Sunny
Tue
H: 75°F
L: 53°F
Patchy rain nearby
Wed
H: 68°F
L: 54°F
Heavy rain
Thu
H: 59°F
L: 47°F

Air Quality

AQI: 1 - Good
PM2.5: 4.55 μg/m3
PM10: 4.85 μg/m3
Carbon Monoxide: 160.85 μg/m3
Nitrogen Dioxide: 4.95 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 12:50 AM
Sunset: 7:52 PM
Daylight: 14 hrs 4 mins
Moonrise: 10:21 PM
Moon Transit: 1:53 AM
Moonset: 6:24 AM
Moon Phase: Full
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

1:23 AM - 3:53 AM
4:06 PM - 6:36 PM

Minor Periods

9:51 PM - 11:21 PM
5:54 AM - 7:24 AM

Action Rating: 4 out of 5

Frost Advisory issued May 2 at 12:28PM EDT until May 3 at 9:00AM EDT by NWS Upton NY

Effective: Sat May 2, 2026, 12:28 PM
Expires: Sun May 3, 2026, 9:00 AM

* WHAT...Temperatures as low as 36 will result in frost formation. * WHERE...In Connecticut, Northern Fairfield and Northern New Haven Counties. In New Jersey, Western Passaic County. In New York, Northern Westchester, Orange, Putnam, and Rockland Counties. * WHEN...From midnight tonight to 9 AM EDT Sunday. * IMPACTS...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.


Special Weather Statement issued May 2 at 1:45PM EDT by NWS Upton NY

Effective: Sat May 2, 2026, 1:45 PM
Expires: Sun May 3, 2026, 8:00 PM

The combination of drying fine fuels, northwest wind gusts between 25 and 30 mph, and relative humidity values between 25 and 35 percent will contribute to an elevated risk of fire spread Sunday afternoon for the Lower Hudson Valley, New York City and Long Island. This forecast considers meteorological, fuel, and land conditions and has been developed in coordination with state fire and land management officials. As a reminder, the annual statewide burn ban remains in effect until May 14. No burn permits are issued. Use extra caution if handling any potential ignition sources such as machinery or matches and ensure to properly extinguish or dispose of cigarette butts. Please refer to the New York State Department of Environmental Conservation website for more information on burn restrictions.


Frost Advisory issued May 2 at 12:36PM EDT until May 3 at 9:00AM EDT by NWS Albany NY

Effective: Sat May 2, 2026, 12:36 PM
Expires: Sun May 3, 2026, 6:30 AM

* WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...The greater Capital District, mid Hudson Valley and southern Taconics in eastern New York, and Litchfield County in northwest Connecticut. * WHEN...From 11 PM this evening to 9 AM EDT Sunday. * IMPACTS...Frost and cold temperatures could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.


Sunday, May 3, 2026

Weather Forecast

Sunny
56.5°F
39.7°F
48.5°F
47%
0 in
0%
0%
15.7 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 6.37 μg/m3
PM10: 7.06 μg/m3
Carbon Monoxide: 170.13 μg/m3
Nitrogen Dioxide: 7.36 μg/m3
Sulphur Dioxide: 1.77 μg/m3
Ozone: 75.48 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 12:50 AM
Sunset: 7:52 PM
Daylight: 14 hrs 4 mins
Moonrise: 10:21 PM
Moon Transit: 1:53 AM
Moonset: 6:24 AM
Moon Phase: Full
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

1:23 AM - 3:53 AM
4:06 PM - 6:36 PM

Minor Periods

9:51 PM - 11:21 PM
5:54 AM - 7:24 AM

Action Rating: 4 out of 5

Monday, May 4, 2026

Weather Forecast

Partly Cloudy
64.7°F
46.5°F
55.4°F
56%
0 in
0%
0%
13.9 mph
6.2


Air Quality

AQI: 1 - Good
PM2.5: 9.8 μg/m3
PM10: 10.65 μg/m3
Carbon Monoxide: 193.93 μg/m3
Nitrogen Dioxide: 12.77 μg/m3
Sulphur Dioxide: 5.54 μg/m3
Ozone: 85.56 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:49 AM
Sunset: 7:53 PM
Daylight: 14 hrs 6 mins
Moonrise: 11:17 PM
Moon Transit: 2:43 AM
Moonset: 7:04 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

2:13 AM - 4:43 AM
4:57 PM - 7:27 PM

Minor Periods

12:00 AM - 12:00 AM
6:34 AM - 8:04 AM

Action Rating: 3 out of 5

Tuesday, May 5, 2026

Weather Forecast

Sunny
75.2°F
53.2°F
62.9°F
65%
0 in
0%
0%
17 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 10.32 μg/m3
PM10: 11.37 μg/m3
Carbon Monoxide: 176.61 μg/m3
Nitrogen Dioxide: 11.67 μg/m3
Sulphur Dioxide: 4.97 μg/m3
Ozone: 113.44 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 12:49 AM
Sunset: 7:54 PM
Daylight: 14 hrs 9 mins
Moonrise: 12:17 AM
Moon Transit: 3:34 AM
Moonset: 7:51 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.8%

Best Times for Fishing or Hunting

Major Periods

3:04 AM - 5:34 AM
5:48 PM - 8:18 PM

Minor Periods

7:21 AM - 8:51 AM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Wednesday, May 6, 2026

Weather Forecast

Patchy rain nearby
67.8°F
54.1°F
60.4°F
81%
0.03 in
78%
0%
17.4 mph
2.3


Air Quality

AQI: 1 - Good
PM2.5: 8.87 μg/m3
PM10: 10.29 μg/m3
Carbon Monoxide: 154.89 μg/m3
Nitrogen Dioxide: 10.23 μg/m3
Sulphur Dioxide: 3.75 μg/m3
Ozone: 103.72 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 12:49 AM
Sunset: 7:56 PM
Daylight: 14 hrs 11 mins
Moonrise: 12:08 AM
Moon Transit: 4:26 AM
Moonset: 8:47 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.0%

Best Times for Fishing or Hunting

Major Periods

3:56 AM - 6:26 AM
6:39 PM - 9:09 PM

Minor Periods

8:17 AM - 9:47 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, May 7, 2026

Weather Forecast

Heavy rain
58.9°F
47.3°F
53.6°F
91%
0.8 in
74%
0%
21.9 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 8.17 μg/m3
PM10: 9.03 μg/m3
Carbon Monoxide: 178.45 μg/m3
Nitrogen Dioxide: 14.61 μg/m3
Sulphur Dioxide: 3.46 μg/m3
Ozone: 78 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 12:49 AM
Sunset: 7:57 PM
Daylight: 14 hrs 13 mins
Moonrise: 12:50 AM
Moon Transit: 5:16 AM
Moonset: 9:47 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.1%

Best Times for Fishing or Hunting

Major Periods

4:46 AM - 7:16 AM
7:30 PM - 10:00 PM

Minor Periods

9:17 AM - 10:47 AM
12:20 AM - 1:50 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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