Water Temperature of the Thames River in New London, CT

Current Water Temperature

40.3°F

Measurement Time: Tuesday, March 17, 2026, 4:06 AM EDT

Today's Tides

Low: March 17, 3:01 AM, 0.0 ft
 High: March 17, 9:03 AM, 2.7 ft
Low: March 17, 3:23 PM, -0.1 ft
 High: March 17, 9:21 PM, 2.7 ft

Temperature Locations

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Local Points of Interest

Riverside Park; Groton, CT

Thames River

Station Name: New London
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 26 feet

Sensor Depth: -3 feet

Nearest Address:
United States Coast Guard Academy
New London, CT 06320
New London County

GPS Coordinates: 41.3717, -72.095525

Nearby Water Temperatures

Thames River, Groton, CT (1.7 mi)
Mystic River, Noank, CT (6.5 mi)
Mystic River, Mystic, CT (6.7 mi)
Mystic Harbor, Mystic, CT (6.8 mi)
Mystic River, Old Mystic, CT (6.9 mi)
East Branch Eightmile River, Lyme, CT (13 mi)
Yantic River, Norwich, CT (13 mi)
Eightmile River, East Haddam, CT (13.2 mi)
Connecticut River, Old Lyme, CT (13.6 mi)
Pawcatuck River, Westerly, RI (13.6 mi)
Orient Harbor, Orient, NY (19.6 mi)
Fort Pond Bay, Montauk, NY (23.4 mi)
Connecticut River, Middletown, CT (26.4 mi)
Natchaug River, Chaplin, CT (30.7 mi)
Hemlock Brook, Foster, RI (35.5 mi)

Weather for New London, Connecticut

Current Weather

45°F
Overcast
Overcast
37.1°F
45.7°F
86%
WSW 19.2 mph
31.5 mph
38.9°F
40.3°F
0 in
100%
9 mi
997 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Tue
H: 41°F
L: 32°F
Sunny
Wed
H: 35°F
L: 28°F
Sunny
Thu
H: 45°F
L: 31°F
Overcast
Fri
H: 45°F
L: 33°F
Patchy rain nearby
Sat
H: 49°F
L: 34°F

Air Quality

AQI: 1 - Good
PM2.5: 2.85 μg/m3
PM10: 2.95 μg/m3
Carbon Monoxide: 192.85 μg/m3
Nitrogen Dioxide: 5.05 μg/m3
Sulphur Dioxide: 2.35 μg/m3
Ozone: 83 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 12:56 AM
Sunset: 6:57 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:15 AM
Moon Transit: 11:50 AM
Moonset: 5:37 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

5:07 PM - 6:37 PM
5:45 AM - 7:15 AM

Action Rating: 5 out of 5

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.


Dense Fog Advisory issued March 16 at 4:38PM EDT until March 17 at 1:00AM EDT by NWS Upton NY

Effective: Mon March 16, 2026, 4:38 PM
Expires: Tue March 17, 2026, 4:00 AM

* WHAT...For the Wind Advisory, south winds 20 to 35 mph with gusts up to 55 mph, shifting west late tonight. Isolated gusts to 60 mph possible. For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. * WHERE...Portions of southern Connecticut and southeast New York. * WHEN...For the Dense Fog Advisory, until 1 AM EDT Tuesday. For the Wind Advisory, until 4 AM EDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Scattered tree limbs, as well as isolated trees and powerlines could be blown down. Power outages possible. Locally damaging wind gusts in excess of 60 mph are possible with any stronger thunderstorm activity this evening into tonight. This activity will be addressed by Special Weather Statements or Severe Thunderstorm Warnings as needed. Low visibility could make driving conditions hazardous.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.


Wind Advisory issued March 16 at 4:38PM EDT until March 17 at 4:00AM EDT by NWS Upton NY

Effective: Mon March 16, 2026, 4:38 PM
Expires: Tue March 17, 2026, 4:00 AM

* WHAT...For the Wind Advisory, south winds 20 to 35 mph with gusts up to 55 mph, shifting west late tonight. Isolated gusts to 60 mph possible. For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. * WHERE...Portions of southern Connecticut and southeast New York. * WHEN...For the Dense Fog Advisory, until 1 AM EDT Tuesday. For the Wind Advisory, until 4 AM EDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Scattered tree limbs, as well as isolated trees and powerlines could be blown down. Power outages possible. Locally damaging wind gusts in excess of 60 mph are possible with any stronger thunderstorm activity this evening into tonight. This activity will be addressed by Special Weather Statements or Severe Thunderstorm Warnings as needed. Low visibility could make driving conditions hazardous.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.


Wind Advisory issued March 16 at 4:38PM EDT until March 17 at 4:00AM EDT by NWS Upton NY

Effective: Mon March 16, 2026, 4:38 PM
Expires: Tue March 17, 2026, 4:00 AM

* WHAT...South winds 20 to 35 mph with gusts up to 55 mph, shifting west late tonight. Isolated gusts to 60 mph possible. * WHERE...In Connecticut, Northern Fairfield, Northern Middlesex, Northern New Haven, and Northern New London Counties. In New Jersey, Eastern Bergen, Eastern Essex, Eastern Union, and Hudson Counties. In New York, New York (Manhattan) and Richmond (Staten Island) Counties. * WHEN...Until 4 AM EDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Scattered tree limbs, as well as isolated trees and powerlines could be blown down. Power outages possible. Locally damaging wind gusts in excess of 60 mph are possible with any stronger 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 3:02PM EDT until March 17 at 8:00AM EDT by NWS Upton NY

Effective: Mon March 16, 2026, 3:02 PM
Expires: Tue March 17, 2026, 8:00 AM

* 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.


Tuesday, March 17, 2026

Weather Forecast

Patchy rain nearby
41°F
32.4°F
39.6°F
66%
0.02 in
79%
0%
34.9 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 3.73 μg/m3
PM10: 4.76 μg/m3
Carbon Monoxide: 167.17 μg/m3
Nitrogen Dioxide: 3.44 μg/m3
Sulphur Dioxide: 1.66 μg/m3
Ozone: 83.2 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 12:56 AM
Sunset: 6:57 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:15 AM
Moon Transit: 11:50 AM
Moonset: 5:37 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

5:07 PM - 6:37 PM
5:45 AM - 7:15 AM

Action Rating: 5 out of 5

Wednesday, March 18, 2026

Weather Forecast

Sunny
35.2°F
27.5°F
30.8°F
42%
0 in
0%
0%
15.7 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 3.44 μg/m3
PM10: 3.73 μg/m3
Carbon Monoxide: 198.81 μg/m3
Nitrogen Dioxide: 3.13 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 93.32 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 12:56 AM
Sunset: 6:59 PM
Daylight: 12 hrs 3 mins
Moonrise: 6:37 AM
Moon Transit: 12:36 AM
Moonset: 6:49 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

6:19 PM - 7:49 PM
6:07 AM - 7:37 AM

Action Rating: 3 out of 5

Thursday, March 19, 2026

Weather Forecast

Sunny
45°F
30.7°F
37.1°F
64%
0 in
0%
0%
9.8 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 5.91 μg/m3
PM10: 8.04 μg/m3
Carbon Monoxide: 198.41 μg/m3
Nitrogen Dioxide: 2.98 μg/m3
Sulphur Dioxide: 1.87 μg/m3
Ozone: 100.52 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 12:00 AM
Sunset: 7:00 PM
Daylight: 12 hrs 6 mins
Moonrise: 7:00 AM
Moon Transit: 1:31 AM
Moonset: 8:02 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

7:32 PM - 9:02 PM
6:30 AM - 8:00 AM

Action Rating: 4 out of 5

Friday, March 20, 2026

Weather Forecast

Overcast
44.9°F
33.3°F
39.1°F
82%
0 in
0%
0%
10.7 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 10.82 μg/m3
PM10: 12.52 μg/m3
Carbon Monoxide: 213.57 μg/m3
Nitrogen Dioxide: 8.1 μg/m3
Sulphur Dioxide: 2.59 μg/m3
Ozone: 89.08 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 10:27 AM
Sunset: 7:01 PM
Daylight: 12 hrs 9 mins
Moonrise: 7:23 AM
Moon Transit: 2:13 PM
Moonset: 9:18 PM
Moon Phase: New
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

3:46 AM - 6:16 AM
1:43 PM - 4:13 PM

Minor Periods

8:48 PM - 10:18 PM
6:53 AM - 8:23 AM

Action Rating: 4 out of 5

Saturday, March 21, 2026

Weather Forecast

Patchy rain nearby
49.2°F
34.4°F
40.5°F
77%
0.02 in
86%
0%
13.6 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 10.71 μg/m3
PM10: 13.98 μg/m3
Carbon Monoxide: 217.52 μg/m3
Nitrogen Dioxide: 5.74 μg/m3
Sulphur Dioxide: 1.79 μg/m3
Ozone: 94.85 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 12:00 AM
Sunset: 7:02 PM
Daylight: 12 hrs 12 mins
Moonrise: 7:50 AM
Moon Transit: 3:05 PM
Moonset: 10:36 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

4:37 AM - 7:07 AM
2:35 PM - 5:05 PM

Minor Periods

10:06 PM - 11:36 PM
7:20 AM - 8:50 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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