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

10.9°F
Sunny
Sunny
-6.2°F
10.6°F
55%
N 16.6 mph
21.7 mph
-5.9°F
-0.5°F
0 in
0%
9 mi
1011 mbar
0.6

Five Day Weather Forecast

Partly Cloudy
Sun
H: 24°F
L: 8°F
Partly Cloudy
Mon
H: 36°F
L: 14°F
Sunny
Tue
H: 29°F
L: 18°F
Partly Cloudy
Wed
H: 29°F
L: 14°F
Sunny
Thu
H: 29°F
L: 8°F

Air Quality

AQI: 1 - Good
PM2.5: 6.05 μg/m3
PM10: 6.75 μg/m3
Carbon Monoxide: 198.85 μg/m3
Nitrogen Dioxide: 6.55 μg/m3
Sulphur Dioxide: 2.25 μg/m3
Ozone: 77 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:06 AM
Sunset: 5:10 PM
Daylight: 10 hrs 6 mins
Moonrise: 4:59 PM
Moon Transit: 12:00 AM
Moonset: 7:06 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:46 PM - 4:16 PM

Minor Periods

4:29 PM - 5:59 PM
6:36 AM - 8:06 AM

Action Rating: 4 out of 5

Coastal Flood Advisory issued January 31 at 3:32PM EST until February 1 at 2:00PM EST by NWS Upton NY

Effective: Sat January 31, 2026, 3:32 PM
Expires: Sun February 1, 2026, 2:00 PM

* WHAT...Up to one foot of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...In Connecticut, Southern Fairfield County. In New York, Southern Westchester County. * WHEN...From 8 AM to 2 PM EST Sunday. * IMPACTS...Minor flooding in the more vulnerable locations near the waterfront and shoreline. Some roads and low lying properties including parking lots, parks, lawns, and homes and businesses with basements near the waterfront will experience minor flooding. * ADDITIONAL DETAILS...Additional minor coastal flooding is possible with high tide cycles late Sunday through early Monday.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.


Cold Weather Advisory issued February 1 at 1:14AM EST until February 1 at 10:00AM EST by NWS Upton NY

Effective: Sun February 1, 2026, 1:14 AM
Expires: Sun February 1, 2026, 10:00 AM

* WHAT...Very cold wind chills as low as 10 to 15 below. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...Until 10 AM EST this morning. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.


Coastal Flood Advisory issued February 1 at 1:14AM EST until February 1 at 2:00PM EST by NWS Upton NY

Effective: Sun February 1, 2026, 1:14 AM
Expires: Sun February 1, 2026, 10:00 AM

* WHAT...Up to one foot of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...In Connecticut, Southern Fairfield County. In New York, Southern Westchester County. * WHEN...From 8 AM this morning to 2 PM EST this afternoon. * IMPACTS...Minor flooding in the more vulnerable locations near the waterfront and shoreline. Some roads and low lying properties including parking lots, parks, lawns, and homes and businesses with basements near the waterfront will experience minor flooding. * ADDITIONAL DETAILS...Additional minor coastal flooding is possible with high tide cycles late today through early Monday.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.


Coastal Flood Statement issued January 31 at 3:32PM EST until February 1 at 2:00PM EST by NWS Upton NY

Effective: Sat January 31, 2026, 3:32 PM
Expires: Sun February 1, 2026, 2:00 PM

* WHAT...Up to one half foot of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...In Connecticut, Southern New Haven County. In New York, Bronx, Northwest Suffolk, Northeast Suffolk, Northern Queens and Northern Nassau Counties. * WHEN...From Sunday morning through Sunday afternoon. * IMPACTS...Brief minor flooding of the more vulnerable locations near the waterfront and shoreline. * ADDITIONAL DETAILS...Additional minor coastal flooding is possible with high tide cycles late Sunday through early Monday.

Do not drive through flooded roadways.


Coastal Flood Statement issued February 1 at 1:14AM EST until February 1 at 2:00PM EST by NWS Upton NY

Effective: Sun February 1, 2026, 1:14 AM
Expires: Sun February 1, 2026, 10:00 AM

* WHAT...Up to one half foot of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...In Connecticut, Southern New Haven County. In New York, Bronx, Northwest Suffolk, Northeast Suffolk, Northern Queens and Northern Nassau Counties. * WHEN...From 7 AM EST this morning through this afternoon. * IMPACTS...Brief minor flooding of the more vulnerable locations near the waterfront and shoreline. * ADDITIONAL DETAILS...Additional minor coastal flooding is possible with high tide cycles late today through early Monday.

Do not drive through flooded roadways.


Coastal Flood Advisory issued January 31 at 3:32PM EST until February 1 at 12:00PM EST by NWS Upton NY

Effective: Sat January 31, 2026, 3:32 PM
Expires: Sun February 1, 2026, 12:00 PM

* WHAT...Up to one foot of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...Southwest Suffolk and Southeast Suffolk Counties. * WHEN...From 5 AM to noon EST Sunday. * IMPACTS...Minor flooding in the more vulnerable locations near the waterfront and shoreline. Some roads and low lying properties including parking lots, parks, lawns, and homes and businesses with basements near the waterfront will experience minor flooding. * ADDITIONAL DETAILS...Additional minor coastal flooding is possible with high tide cycles late Sunday through early Monday. Ice from the back bays could get pushed onshore during high tide, and flood waters could freeze on roadways, further complicating impacts.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.


Cold Weather Advisory issued February 1 at 1:14AM EST until February 1 at 10:00AM EST by NWS Upton NY

Effective: Sun February 1, 2026, 1:14 AM
Expires: Sun February 1, 2026, 10:00 AM

* WHAT...Very cold wind chills as low as 5 to 10 below. * WHERE...Portions of northeast New Jersey and southeast New York. * WHEN...Until 10 AM EST this morning. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.


Coastal Flood Advisory issued February 1 at 1:14AM EST until February 1 at 12:00PM EST by NWS Upton NY

Effective: Sun February 1, 2026, 1:14 AM
Expires: Sun February 1, 2026, 10:00 AM

* WHAT...Up to one foot of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...Southwest Suffolk and Southeast Suffolk Counties. * WHEN...From 5 AM early this morning to noon EST today. * IMPACTS...Minor flooding in the more vulnerable locations near the waterfront and shoreline. Some roads and low lying properties including parking lots, parks, lawns, and homes and businesses with basements near the waterfront will experience minor flooding. * ADDITIONAL DETAILS...Additional minor coastal flooding is possible with high tide cycles late today through early Monday. Ice from the back bays could get pushed onshore during high tide, and flood waters could freeze on roadways, further complicating impacts.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.


Coastal Flood Advisory issued January 31 at 3:32PM EST until February 1 at 11:00AM EST by NWS Upton NY

Effective: Sat January 31, 2026, 3:32 PM
Expires: Sun February 1, 2026, 11:00 AM

* WHAT...Up to one foot of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...Southern Queens and Southern Nassau Counties. * WHEN...From 4 AM to 11 AM EST Sunday. * IMPACTS...Minor flooding in the more vulnerable locations near the waterfront and shoreline. Some roads and low lying properties including parking lots, parks, lawns, and homes and businesses with basements near the waterfront will experience minor flooding. * ADDITIONAL DETAILS...Additional minor coastal flooding is possible with high tide cycles late Sunday through early Monday. Ice from the back bays could get pushed onshore during high tide, and flood waters could freeze on roadways, further complicating impacts.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.


Coastal Flood Advisory issued February 1 at 1:14AM EST until February 1 at 11:00AM EST by NWS Upton NY

Effective: Sun February 1, 2026, 1:14 AM
Expires: Sun February 1, 2026, 10:00 AM

* WHAT...Up to one foot of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...Southern Queens and Southern Nassau Counties. * WHEN...Until 11 AM EST this morning. * IMPACTS...Minor flooding in the more vulnerable locations near the waterfront and shoreline. Some roads and low lying properties including parking lots, parks, lawns, and homes and businesses with basements near the waterfront will experience minor flooding. * ADDITIONAL DETAILS...Additional minor coastal flooding is possible with high tide cycles late today through early Monday. Ice from the back bays could get pushed onshore during high tide, and flood waters could freeze on roadways, further complicating impacts.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.


Sunday, February 1, 2026

Weather Forecast

Partly Cloudy
23.7°F
8.4°F
16.1°F
66%
0 in
0%
0%
18.8 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 5.89 μg/m3
PM10: 6.48 μg/m3
Carbon Monoxide: 195.85 μg/m3
Nitrogen Dioxide: 9.62 μg/m3
Sulphur Dioxide: 1.97 μg/m3
Ozone: 69.68 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:06 AM
Sunset: 5:10 PM
Daylight: 10 hrs 6 mins
Moonrise: 4:59 PM
Moon Transit: 12:00 AM
Moonset: 7:06 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:46 PM - 4:16 PM

Minor Periods

4:29 PM - 5:59 PM
6:36 AM - 8:06 AM

Action Rating: 4 out of 5

Monday, February 2, 2026

Weather Forecast

Partly Cloudy
36°F
13.7°F
23.6°F
65%
0 in
0%
0%
16.1 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 4.79 μg/m3
PM10: 5.21 μg/m3
Carbon Monoxide: 188.13 μg/m3
Nitrogen Dioxide: 7.92 μg/m3
Sulphur Dioxide: 1.91 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 12:06 AM
Sunset: 5:11 PM
Daylight: 10 hrs 8 mins
Moonrise: 6:15 PM
Moon Transit: 12:24 AM
Moonset: 7:36 AM
Moon Phase: Full
Moon Illumination: 99.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:38 PM - 5:08 PM

Minor Periods

5:45 PM - 7:15 PM
7:06 AM - 8:36 AM

Action Rating: 5 out of 5

Tuesday, February 3, 2026

Weather Forecast

Sunny
29.3°F
18°F
24.6°F
72%
0 in
0%
0%
10.3 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 11.76 μg/m3
PM10: 11.99 μg/m3
Carbon Monoxide: 271.49 μg/m3
Nitrogen Dioxide: 18.61 μg/m3
Sulphur Dioxide: 2.88 μg/m3
Ozone: 62.44 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:06 AM
Sunset: 5:12 PM
Daylight: 10 hrs 10 mins
Moonrise: 7:26 PM
Moon Transit: 1:15 AM
Moonset: 8:02 AM
Moon Phase: Full
Moon Illumination: 96.3%

Best Times for Fishing or Hunting

Major Periods

12:45 AM - 3:15 AM
3:26 PM - 5:56 PM

Minor Periods

6:56 PM - 8:26 PM
7:32 AM - 9:02 AM

Action Rating: 3 out of 5

Wednesday, February 4, 2026

Weather Forecast

Partly Cloudy
29.3°F
13.8°F
22.5°F
83%
0 in
0%
0%
9.2 mph
0.4


Air Quality

AQI: 2 - Moderate
PM2.5: 15.86 μg/m3
PM10: 15.95 μg/m3
Carbon Monoxide: 370.35 μg/m3
Nitrogen Dioxide: 37.03 μg/m3
Sulphur Dioxide: 3.61 μg/m3
Ozone: 38.8 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 12:07 AM
Sunset: 5:14 PM
Daylight: 10 hrs 13 mins
Moonrise: 8:34 PM
Moon Transit: 2:01 AM
Moonset: 8:24 AM
Moon Phase: Full
Moon Illumination: 90.9%

Best Times for Fishing or Hunting

Major Periods

1:31 AM - 4:01 AM
4:11 PM - 6:41 PM

Minor Periods

8:04 PM - 9:34 PM
7:54 AM - 9:24 AM

Action Rating: 3 out of 5

Thursday, February 5, 2026

Weather Forecast

Sunny
29°F
8.2°F
16°F
84%
0 in
0%
0%
9.8 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 7.11 μg/m3
PM10: 7.16 μg/m3
Carbon Monoxide: 274.54 μg/m3
Nitrogen Dioxide: 14.3 μg/m3
Sulphur Dioxide: 1.8 μg/m3
Ozone: 56.54 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:07 AM
Sunset: 5:15 PM
Daylight: 10 hrs 15 mins
Moonrise: 9:39 PM
Moon Transit: 2:44 AM
Moonset: 8:45 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.4%

Best Times for Fishing or Hunting

Major Periods

2:14 AM - 4:44 AM
4:53 PM - 7:23 PM

Minor Periods

9:09 PM - 10:39 PM
8:15 AM - 9:45 AM

Action Rating: 3 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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