Water Temperature of the Mill River in Fairfield, CT

Current Water Temperature

46.4°F

Measurement Time: Tuesday, April 16, 2024, 6:18 AM EDT

Temperature Locations

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Local Points of Interest

Southport Harbor; Sasco Beach; Southport Beach; Atlantic Ocean; Southport, CT

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Mill River

Station Name: MILL RIVER AT SOUTHPORT HARBOR NEAR SOUTHPORT, CT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet / 0 meters

Nearest Address:
Country Club of Fairfield
Fairfield, CT 06855
Fairfield County

GPS Coordinates: 41.12479167, -73.2882083

Nearby Water Temperatures

Mill River, Southport, CT (0.6 mi)
Saugatuck River, Westport Village, CT (4.2 mi)
Saugatuck River, Westport, CT (4.3 mi)
Rooster River, Bridgeport, CT (5.2 mi)
Norwalk River, Norwalk, CT (6.4 mi)
Norwalk Harbor, Norwalk, CT (6.5 mi)
Bridgeport Harbor, Bridgeport, CT (6.5 mi)
Norwalk River, Norwalk, CT (6.8 mi)
Housatonic River, Stratford, CT (9.7 mi)
Flax Pond, Old Field, NY (13.5 mi)
Frost Creek, Lattingtown, NY (22 mi)
New Haven Harbor, New Haven, CT (22.6 mi)
Naugatuck River, Beacon Falls, CT (24.9 mi)
East Creek, Sands Point, NY (28.3 mi)
Great South Bay, West Sayville, NY (29.7 mi)

Weather for Fairfield, Connecticut

Current Weather

37.6°F
Clear
Conditions: Clear
Humidity: 47%
Heat Index: 37.6°F
Feels Like: 31.7°F
Wind: NNW 5.6 mph
Wind Gusts: 18.6 mph
Wind Chill: 31.7°F
Air Pressure: 1024.79 millibars
Dew Point: 19.4 F
Precipitation Probability: 0%
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 10 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Wed
H: 44°F
L: 30°F
Overcast
Thu
H: 36°F
L: 28°F
Moderate or heavy snow showers
Fri
H: 27°F
L: 21°F
Moderate or heavy snow showers
Sat
H: 32°F
L: 26°F
Moderate or heavy snow showers
Sun
H: 37°F
L: 26°F

Air Quality

AQI: 1 - Good
PM2.5: 9.95 μg/m3
PM10: 9.95 μg/m3
Carbon Monoxide: 262.85 μg/m3
Nitrogen Dioxide: 26.55 μg/m3
Sulphur Dioxide: 4.95 μg/m3
Ozone: 25 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 11:52 AM
Sunset: 4:30 PM
Daylight: 9 hrs 13 mins
Moonrise: 10:23 AM
Moon Transit: 3:39 PM
Moonset: 9:05 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.9%

Best Times for Fishing or Hunting

Major Periods

5:04 AM - 7:34 AM
3:09 PM - 5:39 PM

Minor Periods

8:35 PM - 10:05 PM
9:53 AM - 11:23 AM

Action Rating: 3 out of 5

Winter Storm Watch issued December 24 at 1:07PM EST until December 27 at 1:00PM EST by NWS Upton NY

Effective: Wed December 24, 2025, 1:07 PM
Expires: Wed December 24, 2025, 9:15 PM

* WHAT...Heavy snow possible. Total snow accumulations between 4 and 8 inches possible. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From Friday afternoon through Saturday afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions may impact the Friday evening commute.

Monitor the latest forecasts for updates on this situation.
Wednesday, December 24, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 37.3°F
Average Humidity: 73%
Chance of Rain: 0%
Wind: 22.1 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 8.74 μg/m3
PM10: 8.91 μg/m3
Carbon Monoxide: 243.97 μg/m3
Nitrogen Dioxide: 21.71 μg/m3
Sulphur Dioxide: 4.98 μg/m3
Ozone: 36.36 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 11:52 AM
Sunset: 4:30 PM
Daylight: 9 hrs 13 mins
Moonrise: 10:23 AM
Moon Transit: 3:39 PM
Moonset: 9:05 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.9%

Best Times for Fishing or Hunting

Major Periods

5:04 AM - 7:34 AM
3:09 PM - 5:39 PM

Minor Periods

8:35 PM - 10:05 PM
9:53 AM - 11:23 AM

Action Rating: 3 out of 5

Thursday, December 25, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 32.4°F
Average Humidity: 69%
Chance of Rain: 0%
Wind: 16.3 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 9.69 μg/m3
PM10: 9.85 μg/m3
Carbon Monoxide: 276.17 μg/m3
Nitrogen Dioxide: 24.63 μg/m3
Sulphur Dioxide: 6.3 μg/m3
Ozone: 33.52 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 11:53 AM
Sunset: 4:30 PM
Daylight: 9 hrs 14 mins
Moonrise: 10:46 AM
Moon Transit: 4:24 PM
Moonset: 10:13 PM
Moon Phase: Waxing Crescent
Moon Illumination: 29.7%

Best Times for Fishing or Hunting

Major Periods

5:49 AM - 8:19 AM
3:54 PM - 6:24 PM

Minor Periods

9:43 PM - 11:13 PM
10:16 AM - 11:46 AM

Action Rating: 2 out of 5

Friday, December 26, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 25.4°F
Average Humidity: 52%
Chance of Rain: 87%
Wind: 17.2 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 3.59 μg/m3
PM10: 3.78 μg/m3
Carbon Monoxide: 168.29 μg/m3
Nitrogen Dioxide: 8.39 μg/m3
Sulphur Dioxide: 2.59 μg/m3
Ozone: 69.96 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 11:53 AM
Sunset: 4:31 PM
Daylight: 9 hrs 14 mins
Moonrise: 11:08 AM
Moon Transit: 12:00 AM
Moonset: 11:20 PM
Moon Phase: First Quarter
Moon Illumination: 40.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

12:00 AM - 12:00 AM
10:38 AM - 12:08 AM

Action Rating: 2 out of 5

Saturday, December 27, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 28.2°F
Average Humidity: 87%
Chance of Rain: 79%
Wind: 16.8 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 4.49 μg/m3
PM10: 5.09 μg/m3
Carbon Monoxide: 195.53 μg/m3
Nitrogen Dioxide: 11.49 μg/m3
Sulphur Dioxide: 2.2 μg/m3
Ozone: 67.28 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 11:54 AM
Sunset: 4:32 PM
Daylight: 9 hrs 14 mins
Moonrise: 11:29 AM
Moon Transit: 4:23 AM
Moonset: 12:20 AM
Moon Phase: First Quarter
Moon Illumination: 51.8%

Best Times for Fishing or Hunting

Major Periods

3:53 AM - 6:23 AM
3:53 AM - 6:23 AM

Minor Periods

10:59 AM - 12:29 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, December 28, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 31.3°F
Average Humidity: 86%
Chance of Rain: 75%
Wind: 13.6 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 5.61 μg/m3
PM10: 6.15 μg/m3
Carbon Monoxide: 203.47 μg/m3
Nitrogen Dioxide: 12.77 μg/m3
Sulphur Dioxide: 2.22 μg/m3
Ozone: 60.08 μg/m3

Astronomical

Sunrise: 7:18 AM
Sun Transit: 11:54 AM
Sunset: 4:32 PM
Daylight: 9 hrs 15 mins
Moonrise: 11:52 AM
Moon Transit: 6:41 PM
Moonset: 12:31 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

8:05 AM - 10:35 AM
6:11 PM - 8:41 PM

Minor Periods

11:22 AM - 12:52 AM
12:01 AM - 1:31 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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