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

37°F
Overcast
Overcast
29.3°F
41.1°F
85%
ESE 11.4 mph
17 mph
34.4°F
35.9°F
0 in
100%
9 mi
1029 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 45°F
L: 32°F
Heavy rain
Mon
H: 49°F
L: 40°F
Heavy rain
Tue
H: 37°F
L: 32°F
Overcast
Wed
H: 32°F
L: 26°F
Partly Cloudy
Thu
H: 40°F
L: 32°F

Air Quality

AQI: 1 - Good
PM2.5: 10.25 μg/m3
PM10: 14.15 μg/m3
Carbon Monoxide: 186.85 μg/m3
Nitrogen Dioxide: 6.45 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 94 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:00 AM
Sunset: 7:00 PM
Daylight: 11 hrs 55 mins
Moonrise: 5:28 AM
Moon Transit: 10:21 AM
Moonset: 3:23 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:51 AM - 12:21 AM

Minor Periods

2:53 PM - 4:23 PM
4:58 AM - 6:28 AM

Action Rating: 2 out of 5

Wind Advisory issued March 15 at 2:26PM EDT until March 17 at 4:00AM EDT by NWS Upton NY

Effective: Sun March 15, 2026, 2:26 PM
Expires: Mon March 16, 2026, 6:00 AM

* WHAT...South winds 15 to 25 mph with gusts up to 50 mph expected. Isolated gusts up to 55 mph. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 2 PM Monday 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.


Flood Watch issued March 15 at 2:22PM EDT until March 17 at 8:00AM EDT by NWS Upton NY

Effective: Sun March 15, 2026, 2:22 PM
Expires: Mon March 16, 2026, 6:00 AM

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...All 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...From late tonight 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 15 at 1:35PM EDT until March 17 at 11:00AM EDT by NWS Albany NY

Effective: Sun March 15, 2026, 1:35 PM
Expires: Mon March 16, 2026, 5:15 AM

* WHAT...Southwest winds 10 to 20 mph with gusts up to 50 mph expected. * WHERE...Litchfield and Berkshire County in western New England. In New York, the Eastern Columbia, Eastern Dutchess, and Eastern Rensselaer Counties. In Vermont, Bennington and Western Windham Counties. * WHEN...From 2 PM Monday to 11 AM EDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...South to southeast winds will strengthen tomorrow afternoon into tomorrow evening before a potent cold front sweeps through the region tomorrow night resulting in a sharp wind to the west. Wind gusts tomorrow afternoon through Tuesday morning can peak up to 50mph.

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


Flood Watch issued March 15 at 1:28PM EDT until March 17 at 8:00AM EDT by NWS Albany NY

Effective: Sun March 15, 2026, 1:28 PM
Expires: Mon March 16, 2026, 5:00 AM

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Northwestern Connecticut and western Massachusetts. * WHEN...From late tonight through Tuesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Creeks and streams are already running high and may rise out of their banks due to the incoming heavy rain. * ADDITIONAL DETAILS... - Periods of moderate to heavy rain along with some embedded thunderstorms are expected to track into western New England late tonight through tomorrow before a cold front sweeps through the region tomorrow night. 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 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.


Sunday, March 15, 2026

Weather Forecast

Sunny
45.3°F
32.2°F
38.2°F
64%
0 in
0%
0%
12.8 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 4.73 μg/m3
PM10: 5.3 μg/m3
Carbon Monoxide: 212.69 μg/m3
Nitrogen Dioxide: 7.43 μg/m3
Sulphur Dioxide: 2.35 μg/m3
Ozone: 85.2 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:00 AM
Sunset: 7:00 PM
Daylight: 11 hrs 55 mins
Moonrise: 5:28 AM
Moon Transit: 10:21 AM
Moonset: 3:23 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:51 AM - 12:21 AM

Minor Periods

2:53 PM - 4:23 PM
4:58 AM - 6:28 AM

Action Rating: 2 out of 5

Monday, March 16, 2026

Weather Forecast

Heavy rain
48.7°F
39.6°F
46.2°F
96%
1.92 in
89%
0%
33.1 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 6.88 μg/m3
PM10: 9.31 μg/m3
Carbon Monoxide: 155.65 μg/m3
Nitrogen Dioxide: 6.85 μg/m3
Sulphur Dioxide: 1.79 μg/m3
Ozone: 78.48 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

Heavy rain
37°F
31.8°F
37.8°F
67%
1.23 in
85%
0%
21.5 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.01 μg/m3
PM10: 3.34 μg/m3
Carbon Monoxide: 169.13 μg/m3
Nitrogen Dioxide: 4.92 μg/m3
Sulphur Dioxide: 2.65 μg/m3
Ozone: 84.92 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

Overcast
32°F
25.5°F
29°F
52%
0 in
0%
0%
13 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 4.6 μg/m3
PM10: 4.87 μg/m3
Carbon Monoxide: 183.73 μg/m3
Nitrogen Dioxide: 8.19 μg/m3
Sulphur Dioxide: 2.64 μg/m3
Ozone: 81.76 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
40.4°F
32.1°F
35.7°F
53%
0 in
0%
0%
8.7 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 8.8 μg/m3
PM10: 10.3 μg/m3
Carbon Monoxide: 233.03 μg/m3
Nitrogen Dioxide: 16.87 μg/m3
Sulphur Dioxide: 3.89 μg/m3
Ozone: 66.15 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

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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