Water Temperature of the Thames River in New London, CT

Current Water Temperature

59.4°F

Measurement Time: Wednesday, June 10, 2026, 2:48 AM EDT

Today's Tides

 High: June 10, 5:35 AM, 2.4 ft
Low: June 10, 11:47 AM, 0.5 ft
 High: June 10, 6:09 PM, 3.2 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

59.2°F
Clear
Clear
59.2°F
59.1°F
90%
SW 8.9 mph
17.8 mph
59.5°F
54.6°F
0 in
0%
9 mi
1016 mbar
0

Five Day Weather Forecast

Moderate rain
Wed
H: 82°F
L: 58°F
Moderate rain
Thu
H: 83°F
L: 66°F
Patchy rain nearby
Fri
H: 74°F
L: 63°F
Patchy rain nearby
Sat
H: 80°F
L: 64°F
Sunny
Sun
H: 78°F
L: 62°F

Air Quality

AQI: 1 - Good
PM2.5: 7.2 μg/m3
PM10: 11 μg/m3
Carbon Monoxide: 109 μg/m3
Nitrogen Dioxide: 2.3 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:47 AM
Sunset: 8:22 PM
Daylight: 15 hrs 7 mins
Moonrise: 1:46 AM
Moon Transit: 8:25 AM
Moonset: 3:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

7:55 AM - 10:25 AM
12:00 AM - 12:00 AM

Minor Periods

2:48 PM - 4:18 PM
1:16 AM - 2:46 AM

Action Rating: 2 out of 5

Heat Advisory issued June 10 at 2:04AM EDT until June 12 at 8:00PM EDT by NWS Upton NY

Effective: Wed June 10, 2026, 2:04 AM
Expires: Wed June 10, 2026, 4:00 PM

* WHAT...Heat index values up to near 100 expected. * WHERE...Northern New London County. * WHEN...From noon Thursday to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.


Heat Advisory issued June 9 at 2:39PM EDT until June 11 at 8:00PM EDT by NWS Upton NY

Effective: Tue June 9, 2026, 2:39 PM
Expires: Wed June 10, 2026, 2:00 AM

* WHAT...Heat index values up to 100 expected. * WHERE...In Connecticut, Northern Fairfield, Northern Middlesex, Northern New Haven, Southern Fairfield, and Southern New Haven Counties. In New York, Northern Nassau, Northwest Suffolk, Southern Nassau, and Southwest Suffolk Counties. * WHEN...From noon to 8 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...The advisory may need to be extended into Friday, however, there is some uncertainty due to the potential for a cooler easterly flow.

A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.


Heat Advisory issued June 10 at 2:04AM EDT until June 12 at 8:00PM EDT by NWS Upton NY

Effective: Wed June 10, 2026, 2:04 AM
Expires: Wed June 10, 2026, 4:00 PM

* WHAT...Heat index values in the mid to upper 90s expected. * WHERE...In Connecticut, Northern Fairfield, Northern Middlesex, Northern New Haven, Southern Fairfield, and Southern New Haven Counties. In New York, Northern Nassau, Northwest Suffolk, Southern Nassau, and Southwest Suffolk Counties. * WHEN...From noon Thursday to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.


Heat Advisory issued June 10 at 1:21AM EDT until June 12 at 8:00PM EDT by NWS Boston/Norton MA

Effective: Wed June 10, 2026, 1:21 AM
Expires: Wed June 10, 2026, 6:00 PM

* WHAT...Temperatures well into the 90s combined with prolonged high humidity will send heat index values to near 100 Thursday and up to 102 Friday. * WHERE...Franklin County, Hampshire County, Hampden County, Hartford CT, Tolland CT, and Windham CT. * WHEN...From noon Thursday to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.


Wednesday, June 10, 2026

Weather Forecast

Moderate rain
81.7°F
58.3°F
66.7°F
83%
0.25 in
73%
0%
13.4 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 8.68 μg/m3
PM10: 13.17 μg/m3
Carbon Monoxide: 115.88 μg/m3
Nitrogen Dioxide: 3.05 μg/m3
Sulphur Dioxide: 0.31 μg/m3
Ozone: 81.33 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:47 AM
Sunset: 8:22 PM
Daylight: 15 hrs 7 mins
Moonrise: 1:46 AM
Moon Transit: 8:25 AM
Moonset: 3:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

7:55 AM - 10:25 AM
12:00 AM - 12:00 AM

Minor Periods

2:48 PM - 4:18 PM
1:16 AM - 2:46 AM

Action Rating: 2 out of 5

Thursday, June 11, 2026

Weather Forecast

Moderate rain
83.1°F
65.6°F
72.6°F
83%
0.3 in
80%
0%
13.2 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 11.08 μg/m3
PM10: 13.53 μg/m3
Carbon Monoxide: 153.42 μg/m3
Nitrogen Dioxide: 6.85 μg/m3
Sulphur Dioxide: 0.61 μg/m3
Ozone: 109.13 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:48 AM
Sunset: 8:22 PM
Daylight: 15 hrs 8 mins
Moonrise: 2:12 AM
Moon Transit: 9:16 AM
Moonset: 4:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.5%

Best Times for Fishing or Hunting

Major Periods

8:46 AM - 11:16 AM
12:00 AM - 12:00 AM

Minor Periods

4:05 PM - 5:35 PM
1:42 AM - 3:12 AM

Action Rating: 2 out of 5

Friday, June 12, 2026

Weather Forecast

Patchy rain nearby
74.3°F
63.3°F
68.6°F
91%
0.01 in
46%
0%
11.6 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 12.79 μg/m3
PM10: 14.09 μg/m3
Carbon Monoxide: 155.42 μg/m3
Nitrogen Dioxide: 8.73 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 116 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:48 AM
Sunset: 8:23 PM
Daylight: 15 hrs 8 mins
Moonrise: 2:42 AM
Moon Transit: 10:11 AM
Moonset: 5:55 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:41 AM - 12:11 AM

Minor Periods

5:25 PM - 6:55 PM
2:12 AM - 3:42 AM

Action Rating: 2 out of 5

Saturday, June 13, 2026

Weather Forecast

Patchy rain nearby
80.1°F
63.7°F
70.7°F
69%
0 in
17%
0%
10.7 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 6.17 μg/m3
PM10: 7.05 μg/m3
Carbon Monoxide: 143.25 μg/m3
Nitrogen Dioxide: 5.9 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 104.92 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:48 AM
Sunset: 8:23 PM
Daylight: 15 hrs 9 mins
Moonrise: 3:20 AM
Moon Transit: 11:12 AM
Moonset: 7:16 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:41 AM - 3:11 AM
10:42 AM - 1:12 PM

Minor Periods

6:46 PM - 8:16 PM
2:50 AM - 4:20 AM

Action Rating: 3 out of 5

Sunday, June 14, 2026

Weather Forecast

Sunny
77.9°F
62.1°F
68.4°F
67%
0 in
6%
0%
16.1 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 3.72 μg/m3
PM10: 3.89 μg/m3
Carbon Monoxide: 154.78 μg/m3
Nitrogen Dioxide: 7.07 μg/m3
Sulphur Dioxide: 0.51 μg/m3
Ozone: 63.56 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:48 AM
Sunset: 8:23 PM
Daylight: 15 hrs 9 mins
Moonrise: 4:11 AM
Moon Transit: 12:19 AM
Moonset: 8:32 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

1:45 AM - 4:15 AM
11:49 AM - 2:19 PM

Minor Periods

8:02 PM - 9:32 PM
3:41 AM - 5:11 AM

Action Rating: 5 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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