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

55°F
Overcast
Overcast
50.6°F
52.1°F
93%
S 17.4 mph
34 mph
46.6°F
51.5°F
0 in
100%
9 mi
1002 mbar
0.1

Five Day Weather Forecast

Moderate rain
Mon
H: 53°F
L: 39°F
Patchy rain nearby
Tue
H: 41°F
L: 29°F
Partly Cloudy
Wed
H: 33°F
L: 25°F
Partly Cloudy
Thu
H: 37°F
L: 31°F
Patchy rain nearby
Fri
H: 49°F
L: 37°F

Air Quality

AQI: 1 - Good
PM2.5: 3.05 μg/m3
PM10: 3.95 μg/m3
Carbon Monoxide: 125.85 μg/m3
Nitrogen Dioxide: 4.35 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 67 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 12:00 AM
Sunset: 7:01 PM
Daylight: 11 hrs 58 mins
Moonrise: 5:55 AM
Moon Transit: 11:09 AM
Moonset: 4:33 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.6%

Best Times for Fishing or Hunting

Major Periods

12:33 AM - 3:03 AM
10:39 AM - 1:09 PM

Minor Periods

4:03 PM - 5:33 PM
5:25 AM - 6:55 AM

Action Rating: 3 out of 5

Flood Watch issued March 16 at 2:26AM EDT until March 17 at 8:00AM EDT by NWS Upton NY

Effective: Mon March 16, 2026, 2:26 AM
Expires: Mon March 16, 2026, 4:30 PM

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of southern Connecticut, including the following areas, Northern Fairfield, Northern Middlesex, Northern New Haven, Northern New London, Southern Fairfield, Southern Middlesex, Southern New Haven and Southern New London. * WHEN...Through Tuesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.


Wind Advisory issued March 16 at 2:25AM EDT until March 17 at 4:00AM EDT by NWS Upton NY

Effective: Mon March 16, 2026, 2:25 AM
Expires: Mon March 16, 2026, 4:30 PM

* WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Portions of southern Connecticut, northeastern New Jersey, and southeastern New York. * WHEN...From 2 PM this afternoon to 4 AM EDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.


Wind Advisory issued March 16 at 1:35PM EDT until March 17 at 4:00AM EDT by NWS Upton NY

Effective: Mon March 16, 2026, 1:35 PM
Expires: Tue March 17, 2026, 4:00 AM

* WHAT...South winds 20 to 30 mph with gusts up to 55 mph expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...Until 4 AM EDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Locally damaging wind gusts possible with any thunderstorm activity this evening into tonight. This activity will be addressed by Special Weather Statements or Severe Thunderstorm Warnings as needed.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.


Wind Advisory issued March 16 at 1:35PM EDT until March 17 at 4:00AM EDT by NWS Upton NY

Effective: Mon March 16, 2026, 1:35 PM
Expires: Tue March 17, 2026, 4:00 AM

* WHAT...South winds 15 to 25 mph with gusts up to 50 mph expected. * WHERE...In New Jersey, Eastern Passaic, Western Bergen, Western Essex, Western Passaic, and Western Union Counties. In New York, Northern Westchester, Orange, Putnam, and Rockland Counties. * WHEN...Until 4 AM EDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Locally damaging wind gusts possible with any thunderstorm activity this evening into tonight. This activity will be addressed by Special Weather Statements or Severe Thunderstorm Warnings as needed.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.


Flood Watch issued March 16 at 1:10AM EDT until March 17 at 8:00AM EDT by NWS Albany NY

Effective: Mon March 16, 2026, 1:10 AM
Expires: Mon March 16, 2026, 6:00 PM

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Northwestern Connecticut and western Massachusetts * WHEN...From 5 AM EDT early this morning through Tuesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Periods of moderate to heavy rain along with some embedded thunderstorms are expected to track into western New England today before a cold front sweeps through the region tonight. A total of 1 to 2.5 inches of rain is likely through Tuesday morning which can lead to rises on area rivers and streams and result in urban and poor drainage flooding, especially during heavy downpours. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.


Monday, March 16, 2026

Weather Forecast

Moderate rain
52.7°F
39°F
48°F
94%
0.77 in
83%
0%
32.2 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 6 μg/m3
PM10: 7.68 μg/m3
Carbon Monoxide: 155.17 μg/m3
Nitrogen Dioxide: 6.69 μg/m3
Sulphur Dioxide: 1.74 μg/m3
Ozone: 78.08 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 12:00 AM
Sunset: 7:01 PM
Daylight: 11 hrs 58 mins
Moonrise: 5:55 AM
Moon Transit: 11:09 AM
Moonset: 4:33 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.6%

Best Times for Fishing or Hunting

Major Periods

12:33 AM - 3:03 AM
10:39 AM - 1:09 PM

Minor Periods

4:03 PM - 5:33 PM
5:25 AM - 6:55 AM

Action Rating: 3 out of 5

Tuesday, March 17, 2026

Weather Forecast

Patchy rain nearby
41.2°F
28.8°F
38.3°F
61%
0.04 in
88%
0%
32.7 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 2.76 μg/m3
PM10: 3.06 μg/m3
Carbon Monoxide: 176.25 μg/m3
Nitrogen Dioxide: 4.7 μg/m3
Sulphur Dioxide: 2.49 μg/m3
Ozone: 84.4 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 12:00 AM
Sunset: 7:02 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:20 AM
Moon Transit: 11:55 AM
Moonset: 5:42 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

1:20 AM - 3:50 AM
11:25 AM - 1:55 PM

Minor Periods

5:12 PM - 6:42 PM
5:50 AM - 7:20 AM

Action Rating: 5 out of 5

Wednesday, March 18, 2026

Weather Forecast

Partly Cloudy
32.5°F
25.2°F
29°F
51%
0 in
0%
0%
13.2 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 4.81 μg/m3
PM10: 5.09 μg/m3
Carbon Monoxide: 191.41 μg/m3
Nitrogen Dioxide: 8.51 μg/m3
Sulphur Dioxide: 2.56 μg/m3
Ozone: 81.72 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:00 AM
Sunset: 7:03 PM
Daylight: 12 hrs 3 mins
Moonrise: 6:42 AM
Moon Transit: 12:41 AM
Moonset: 6:54 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

2:06 AM - 4:36 AM
12:11 AM - 2:41 PM

Minor Periods

6:24 PM - 7:54 PM
6:12 AM - 7:42 AM

Action Rating: 3 out of 5

Thursday, March 19, 2026

Weather Forecast

Partly Cloudy
37.2°F
30.6°F
33.7°F
80%
0 in
0%
0%
8.5 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 8.59 μg/m3
PM10: 10.52 μg/m3
Carbon Monoxide: 185.51 μg/m3
Nitrogen Dioxide: 15.18 μg/m3
Sulphur Dioxide: 3.92 μg/m3
Ozone: 74.24 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 12:00 AM
Sunset: 7:04 PM
Daylight: 12 hrs 6 mins
Moonrise: 7:04 AM
Moon Transit: 1:31 AM
Moonset: 8:07 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

1:01 AM - 3:31 AM
1:01 AM - 3:31 AM

Minor Periods

7:37 PM - 9:07 PM
6:34 AM - 8:04 AM

Action Rating: 4 out of 5

Friday, March 20, 2026

Weather Forecast

Patchy rain nearby
48.6°F
36.5°F
41.9°F
69%
0.08 in
68%
0%
12.8 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 14.1 μg/m3
PM10: 16.29 μg/m3
Carbon Monoxide: 230.37 μg/m3
Nitrogen Dioxide: 21.52 μg/m3
Sulphur Dioxide: 5.97 μg/m3
Ozone: 61.38 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 10:27 AM
Sunset: 7:05 PM
Daylight: 12 hrs 9 mins
Moonrise: 7:28 AM
Moon Transit: 2:18 PM
Moonset: 9:22 PM
Moon Phase: New
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

3:41 AM - 6:11 AM
1:48 PM - 4:18 PM

Minor Periods

8:52 PM - 10:22 PM
6:58 AM - 8:28 AM

Action Rating: 4 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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