Water Temperature of the Mill River in Southport, CT

Current Water Temperature

49.5°F 9.7°C
Frigid Dangerously Cold
49.5°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Severe hypothermia and cold water shock risk. Unprotected swimming causes rapid loss of dexterity in under 5 minutes.

Measurement Time: Thursday, April 18, 2024, 5:06 AM EDT

Temperature Locations

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Local Points of Interest

Perry's Green

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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

64.6°F
Light rain shower
Conditions: Light rain shower
Humidity: 93%
Feels Like: 62.2°F
Wind: SSW 11.9 mph
Wind Gusts: 24.1 mph
Pressure: 29.89 in
Precipitation: 0.08 in
Cloud Cover: 99%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Patchy rain nearby
Thu
H: 69°F
L: 57°F
Overcast
Fri
H: 64°F
L: 56°F
Sunny
Sat
H: 62°F
L: 46°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
6.5 μg/m³
Good
PM10
8.3 μg/m³
Good
Ozone (O3)
60 μg/m³
Photochemical
NO2
15 μg/m³
Nitrogen Dioxide
SO2
1.3 μg/m³
Sulfur Dioxide
CO
129 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 15m daylight
Sunrise 6:29 AM
Solar Noon 11:36 AM
Sunset 4:44 PM
Moon
Waning Crescent • 11%
Moonrise 2:41 AM
Transit 8:47 AM
Moonset 2:45 PM

Best Times for Fishing or Hunting

Major Periods

8:17 AM - 10:47 AM
8:39 PM - 11:09 PM

Minor Periods

2:11 AM - 3:41 AM
2:15 PM - 3:45 PM
Action Rating:
Fair Action 2/5
Thursday, November 5, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 63.2°F
Average Humidity: 90%
Chance of Rain: 81%
Wind: 12.8 mph
UV Index: 2.1

Astronomical

Sun
10h 15m daylight
Sunrise 6:29 AM
Solar Noon 11:36 AM
Sunset 4:44 PM
Moon
Waning Crescent • 11%
Moonrise 2:41 AM
Transit 8:47 AM
Moonset 2:45 PM

Best Times for Fishing or Hunting

Major Periods

8:17 AM - 10:47 AM
8:39 PM - 11:09 PM

Minor Periods

2:11 AM - 3:41 AM
2:15 PM - 3:45 PM
Action Rating:
Fair Action 2/5
Friday, November 6, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 61.8°F
Average Humidity: 95%
Chance of Rain: 94%
Wind: 9.6 mph
UV Index: 0.9

Astronomical

Sun
10h 12m daylight
Sunrise 6:31 AM
Solar Noon 11:36 AM
Sunset 4:43 PM
Moon
Waning Crescent • 5%
Moonrise 3:47 AM
Transit 9:31 AM
Moonset 3:06 PM

Best Times for Fishing or Hunting

Major Periods

9:01 AM - 11:31 AM
9:23 PM - 11:53 PM

Minor Periods

3:17 AM - 4:47 AM
2:36 PM - 4:06 PM
Action Rating:
Fair Action 2/5
Saturday, November 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 54.4°F
Average Humidity: 80%
Chance of Rain: 22%
Wind: 14.1 mph
UV Index: 2.5

Astronomical

Sun
10h 10m daylight
Sunrise 6:32 AM
Solar Noon 11:36 AM
Sunset 4:42 PM
Moon
Waning Crescent • 1%
Moonrise 4:53 AM
Transit 10:16 AM
Moonset 3:30 PM

Best Times for Fishing or Hunting

Major Periods

9:46 AM - 12:16 PM
10:08 PM - 12:38 AM

Minor Periods

4:23 AM - 5:53 AM
3:00 PM - 4:30 PM
Action Rating:
Good Action 3/5
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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