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

82.9°F
Mist
Mist
84.5°F
93.7°F
43%
NW 13.4 mph
22.2 mph
88.9°F
68.1°F
0 in
50%
2 mi
1010 mbar
1.7

Five Day Weather Forecast

Sunny
Wed
H: 96°F
L: 76°F
Sunny
Thu
H: 89°F
L: 72°F
Sunny
Fri
H: 84°F
L: 67°F
Sunny
Sat
H: 75°F
L: 68°F
Sunny
Sun
H: 82°F
L: 67°F

Air Quality

AQI: 1 - Good
PM2.5: 9.1 μg/m3
PM10: 9.3 μg/m3
Carbon Monoxide: 122 μg/m3
Nitrogen Dioxide: 1.3 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 108 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:00 PM
Sunset: 8:25 PM
Daylight: 14 hrs 51 mins
Moonrise: 6:47 AM
Moon Transit: 2:18 PM
Moonset: 9:36 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

3:39 AM - 6:09 AM
1:48 PM - 4:18 PM

Minor Periods

9:06 PM - 10:36 PM
6:17 AM - 7:47 AM

Action Rating: 3 out of 5

Heat Advisory issued July 15 at 2:30AM EDT until July 15 at 9:00PM EDT by NWS Upton NY

Effective: Wed July 15, 2026, 2:30 AM
Expires: Wed July 15, 2026, 9:00 PM

* WHAT...Heat index values up to 101. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...Until 9 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.


Air Quality Alert issued July 15 at 9:45AM EDT by NWS Upton NY

Effective: Wed July 15, 2026, 9:45 AM
Expires: Thu July 16, 2026, 12:00 AM

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex, New London until midnight EDT tonight. An Air Quality Action Day means that Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi


Air Quality Alert issued July 15 at 9:37AM EDT by NWS Upton NY

Effective: Wed July 15, 2026, 9:37 AM
Expires: Thu July 16, 2026, 12:00 AM

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex, New London until midnight EDT tonight. An Air Quality Action Day means that Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi


Air Quality Alert issued July 15 at 9:04AM EDT by NWS Upton NY

Effective: Wed July 15, 2026, 9:04 AM
Expires: Thu July 16, 2026, 12:00 AM

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex, New London until midnight EDT tonight. An Air Quality Action Day means that Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi


Air Quality Alert issued July 15 at 3:10PM EDT by NWS Upton NY

Effective: Wed July 15, 2026, 3:10 PM
Expires: Thu July 16, 2026, 12:00 PM

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex, New London until noon EDT Thursday. An Air Quality Action Day means that Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi


Wednesday, July 15, 2026

Weather Forecast

Sunny
96.3°F
75.6°F
83.6°F
59%
0 in
3%
0%
15.2 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 10.75 μg/m3
PM10: 11.08 μg/m3
Carbon Monoxide: 148.88 μg/m3
Nitrogen Dioxide: 3.35 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 100.29 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:00 PM
Sunset: 8:25 PM
Daylight: 14 hrs 51 mins
Moonrise: 6:47 AM
Moon Transit: 2:18 PM
Moonset: 9:36 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

3:39 AM - 6:09 AM
1:48 PM - 4:18 PM

Minor Periods

9:06 PM - 10:36 PM
6:17 AM - 7:47 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Sunny
89°F
71.8°F
79.7°F
53%
0 in
17%
0%
11.4 mph
5.7


Air Quality

AQI: 1 - Good
PM2.5: 11.84 μg/m3
PM10: 12.18 μg/m3
Carbon Monoxide: 150.33 μg/m3
Nitrogen Dioxide: 3.92 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 96.58 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 1:00 PM
Sunset: 8:24 PM
Daylight: 14 hrs 50 mins
Moonrise: 8:06 AM
Moon Transit: 3:12 PM
Moonset: 10:04 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

4:34 AM - 7:04 AM
2:42 PM - 5:12 PM

Minor Periods

9:34 PM - 11:04 PM
7:36 AM - 9:06 AM

Action Rating: 3 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
84.4°F
67.3°F
76.2°F
48%
0 in
2%
0%
7.6 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 6.84 μg/m3
PM10: 7.29 μg/m3
Carbon Monoxide: 148.33 μg/m3
Nitrogen Dioxide: 4.48 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 87.33 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 1:00 PM
Sunset: 8:23 PM
Daylight: 14 hrs 48 mins
Moonrise: 9:20 AM
Moon Transit: 4:00 PM
Moonset: 10:29 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

5:25 AM - 7:55 AM
3:30 PM - 6:00 PM

Minor Periods

9:59 PM - 11:29 PM
8:50 AM - 10:20 AM

Action Rating: 3 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
74.9°F
68.4°F
71°F
85%
0.45 in
85%
0%
12.3 mph
1.8


Air Quality

AQI: 1 - Good
PM2.5: 10.59 μg/m3
PM10: 12.72 μg/m3
Carbon Monoxide: 162.7 μg/m3
Nitrogen Dioxide: 8.04 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 89.42 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:00 PM
Sunset: 8:23 PM
Daylight: 14 hrs 47 mins
Moonrise: 10:31 AM
Moon Transit: 4:46 PM
Moonset: 10:50 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

6:11 AM - 8:41 AM
4:16 PM - 6:46 PM

Minor Periods

10:20 PM - 11:50 PM
10:01 AM - 11:31 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
81.7°F
67.3°F
74.7°F
70%
0.11 in
58%
0%
15.7 mph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 4.57 μg/m3
PM10: 4.73 μg/m3
Carbon Monoxide: 267.67 μg/m3
Nitrogen Dioxide: 9.32 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 76.89 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 1:00 PM
Sunset: 8:22 PM
Daylight: 14 hrs 45 mins
Moonrise: 11:38 AM
Moon Transit: 5:30 PM
Moonset: 11:11 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

6:56 AM - 9:26 AM
5:00 PM - 7:30 PM

Minor Periods

12:00 AM - 12:00 AM
11:08 AM - 12:38 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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