Water Temperature of the Thames River in New London, CT

Current Water Temperature

39.2°F

Measurement Time: Sunday, March 29, 2026, 4:18 AM EDT

Today's Tides

Low: March 29, 1:22 AM, 0.1 ft
 High: March 29, 7:29 AM, 2.7 ft
Low: March 29, 1:54 PM, 0.0 ft
 High: March 29, 7:45 PM, 2.6 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

26.1°F
Clear
Clear
20.4°F
31°F
65%
WNW 4.7 mph
7.1 mph
27.4°F
17.2°F
0 in
0%
9 mi
1034 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 51°F
L: 30°F
Overcast
Mon
H: 57°F
L: 40°F
Cloudy
Tue
H: 56°F
L: 44°F
Patchy rain nearby
Wed
H: 59°F
L: 48°F
Moderate rain
Thu
H: 51°F
L: 36°F

Air Quality

AQI: 1 - Good
PM2.5: 7.55 μg/m3
PM10: 8.85 μg/m3
Carbon Monoxide: 265.85 μg/m3
Nitrogen Dioxide: 5.35 μg/m3
Sulphur Dioxide: 2.25 μg/m3
Ozone: 93 μg/m3

Astronomical

Sunrise: 6:37 AM
Sun Transit: 12:00 AM
Sunset: 7:10 PM
Daylight: 12 hrs 34 mins
Moonrise: 3:46 PM
Moon Transit: 10:42 PM
Moonset: 5:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

12:16 AM - 2:46 PM
12:00 AM - 12:00 AM

Minor Periods

3:16 PM - 4:46 PM
4:32 AM - 6:02 AM

Action Rating: 2 out of 5

Special Weather Statement issued March 29 at 12:17AM EDT by NWS Upton NY

Effective: Sun March 29, 2026, 12:17 AM
Expires: Sun March 29, 2026, 6:00 PM

Dry and breezy conditions expected today. The combination of afternoon RH values around 30 to 40 percent and a southwesterly flow increasing to 20 to 25 mph gusts will result in an elevated risk of fire spread. Use caution when handling any potential ignition sources, including machinery, cigarettes and matches. Any fires that ignite will have the potential to spread quickly. The forecast considers meteorological, fuel and land conditions and has been developed in coordination with state fire and land management officials.


Special Weather Statement issued March 28 at 2:09PM EDT by NWS Boston/Norton MA

Effective: Sat March 28, 2026, 2:09 PM
Expires: Sun March 29, 2026, 6:00 AM

A dry but breezy day is forecast for Sunday, with relative humidities in the afternoon expected to drop into the 30 to 40 percent range and southwesterly wind gusts between 25 and 30 mph. When combined with the lack of recent significant rainfall, elevated fire weather potential will exist for Sunday. Use caution when handling and disposing of ignition sources such as matches and cigarettes.


Special Weather Statement issued March 28 at 6:23PM EDT by NWS Boston/Norton MA

Effective: Sat March 28, 2026, 6:23 PM
Expires: Sun March 29, 2026, 6:00 AM

A dry but breezy day is forecast for Sunday, with relative humidities in the afternoon expected to drop into the 30 to 40 percent range and southwesterly wind gusts between 25 and 30 mph. When combined with the lack of recent significant rainfall, elevated fire weather potential will exist for Sunday. Use caution when handling and disposing of ignition sources such as matches and cigarettes.


Special Weather Statement issued March 28 at 5:31PM EDT by NWS Boston/Norton MA

Effective: Sat March 28, 2026, 5:31 PM
Expires: Sun March 29, 2026, 6:00 AM

A dry but breezy day is forecast for Sunday, with relative humidities in the afternoon expected to drop into the 30 to 40 percent range and southwesterly wind gusts between 25 and 30 mph. When combined with the lack of recent significant rainfall, elevated fire weather potential will exist for Sunday. Use caution when handling and disposing of ignition sources such as matches and cigarettes.


Special Weather Statement issued March 28 at 6:23PM EDT by NWS Boston/Norton MA

Effective: Sat March 28, 2026, 6:23 PM
Expires: Sun March 29, 2026, 6:00 AM

A dry but breezy day is forecast for Sunday, with relative humidities in the afternoon expected to drop into the 30 to 40 percent range and southwesterly wind gusts between 20 and 25 mph. When combined with the lack of recent significant rainfall, elevated fire weather potential will exist for Sunday. Use caution when handling and disposing of ignition sources such as matches and cigarettes.


Sunday, March 29, 2026

Weather Forecast

Sunny
50.9°F
30.2°F
39.8°F
56%
0 in
0%
0%
17.2 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 7.3 μg/m3
PM10: 9.22 μg/m3
Carbon Monoxide: 230.97 μg/m3
Nitrogen Dioxide: 4.39 μg/m3
Sulphur Dioxide: 2.01 μg/m3
Ozone: 96.6 μg/m3

Astronomical

Sunrise: 6:37 AM
Sun Transit: 12:00 AM
Sunset: 7:10 PM
Daylight: 12 hrs 34 mins
Moonrise: 3:46 PM
Moon Transit: 10:42 PM
Moonset: 5:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

12:16 AM - 2:46 PM
12:00 AM - 12:00 AM

Minor Periods

3:16 PM - 4:46 PM
4:32 AM - 6:02 AM

Action Rating: 2 out of 5

Monday, March 30, 2026

Weather Forecast

Overcast
56.7°F
40.1°F
46°F
80%
0 in
0%
0%
15.2 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 10.12 μg/m3
PM10: 12.38 μg/m3
Carbon Monoxide: 208.29 μg/m3
Nitrogen Dioxide: 6.87 μg/m3
Sulphur Dioxide: 2.11 μg/m3
Ozone: 99.64 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:00 AM
Sunset: 7:11 PM
Daylight: 12 hrs 36 mins
Moonrise: 4:55 PM
Moon Transit: 11:26 PM
Moonset: 5:25 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.0%

Best Times for Fishing or Hunting

Major Periods

1:02 PM - 3:32 PM
12:00 AM - 12:00 AM

Minor Periods

4:25 PM - 5:55 PM
4:55 AM - 6:25 AM

Action Rating: 3 out of 5

Tuesday, March 31, 2026

Weather Forecast

Cloudy
55.8°F
43.7°F
48.6°F
92%
0 in
0%
0%
20.6 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 10.02 μg/m3
PM10: 12.63 μg/m3
Carbon Monoxide: 203.53 μg/m3
Nitrogen Dioxide: 7.11 μg/m3
Sulphur Dioxide: 1.83 μg/m3
Ozone: 95.56 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:00 AM
Sunset: 7:12 PM
Daylight: 12 hrs 39 mins
Moonrise: 6:02 PM
Moon Transit: 12:00 AM
Moonset: 5:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:45 PM - 4:15 PM

Minor Periods

5:32 PM - 7:02 PM
5:16 AM - 6:46 AM

Action Rating: 4 out of 5

Wednesday, April 1, 2026

Weather Forecast

Patchy rain nearby
58.6°F
48°F
51.5°F
88%
0.12 in
75%
0%
20.6 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 10.18 μg/m3
PM10: 13.05 μg/m3
Carbon Monoxide: 203.56 μg/m3
Nitrogen Dioxide: 4.55 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 99.96 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:00 AM
Sunset: 7:14 PM
Daylight: 12 hrs 42 mins
Moonrise: 7:07 PM
Moon Transit: 12:09 AM
Moonset: 6:07 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:28 PM - 4:58 PM

Minor Periods

6:37 PM - 8:07 PM
5:37 AM - 7:07 AM

Action Rating: 3 out of 5

Thursday, April 2, 2026

Weather Forecast

Moderate rain
50.5°F
35.5°F
45.2°F
83%
0.21 in
82%
0%
18.1 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.34 μg/m3
PM10: 3.5 μg/m3
Carbon Monoxide: 203.41 μg/m3
Nitrogen Dioxide: 8.09 μg/m3
Sulphur Dioxide: 1.83 μg/m3
Ozone: 81.38 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:00 AM
Sunset: 7:15 PM
Daylight: 12 hrs 45 mins
Moonrise: 8:12 PM
Moon Transit: 12:52 AM
Moonset: 6:27 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:22 AM - 2:52 AM
3:10 PM - 5:40 PM

Minor Periods

7:42 PM - 9:12 PM
5:57 AM - 7:27 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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