Water Temperature of the Thames River in New London, CT

Current Water Temperature

42.4°F

Measurement Time: Sunday, December 28, 2025, 8:18 AM EST

Today's Tides

 High: December 28, 3:23 AM, 2.5 ft
Low: December 28, 10:01 AM, 0.2 ft
 High: December 28, 3:30 PM, 2.1 ft
Low: December 28, 10:01 PM, 0.0 ft

Temperature Locations

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Local Points of Interest

Riverside Park; Groton, CT

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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

14.5°F
Mostly cloudy
Conditions: Mostly cloudy
Humidity: 75%
Heat Index: 14.5°F
Feels Like: 11.6°F
Wind: NW 1.9 mph
Wind Gusts: 5 mph
Wind Chill: 11.6°F
Air Pressure: 1022.44 millibars
Dew Point: 11.6°F
Chance of Precipitation: 8%
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 10 mi
UV Index: 0

Five Day Weather Forecast

Light freezing rain
Sun
H: 32°F
L: 14°F
Moderate rain
Mon
H: 47°F
L: 34°F
Partly Cloudy
Tue
H: 33°F
L: 27°F
Partly Cloudy
Wed
H: 34°F
L: 27°F
Moderate snow
Thu
H: 33°F
L: 31°F

Air Quality

AQI: 1 - Good
PM2.5: 13.05 μg/m3
PM10: 13.75 μg/m3
Carbon Monoxide: 306.85 μg/m3
Nitrogen Dioxide: 14.85 μg/m3
Sulphur Dioxide: 3.65 μg/m3
Ozone: 57 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:50 AM
Sunset: 4:27 PM
Daylight: 9 hrs 13 mins
Moonrise: 11:47 AM
Moon Transit: 6:36 PM
Moonset: 12:26 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

8:10 AM - 10:40 AM
6:06 PM - 8:36 PM

Minor Periods

11:17 AM - 12:47 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Special Weather Statement issued December 27 at 2:59PM EST by NWS Upton NY

Effective: Sat December 27, 2025, 2:59 PM
Expires: Sun December 28, 2025, 12:00 PM

Tonight, temperatures will be well below freezing and winds should remain on the lighter side, preventing some of the roads and other surfaces from drying out. Any existing areas of snowmelt could lead to black ice formation on area roadways, bridges, overpasses, and any untreated surfaces. Motorists and pedestrians should use caution. Reduce speed, allow extra time, and be prepared for areas of slippery travel Saturday evening through midday Sunday.


Winter Weather Advisory issued December 28 at 1:20AM EST until December 29 at 12:00AM EST by NWS Upton NY

Effective: Sun December 28, 2025, 1:20 AM
Expires: Sun December 28, 2025, 2:00 PM

* WHAT...Freezing rain expected. Total ice accumulations up to one tenth of an inch. * WHERE...Northern Fairfield, Northern Middlesex, Northern New Haven, and Northern New London Counties. * WHEN...From 4 PM this afternoon to midnight EST tonight. * IMPACTS...Difficult travel conditions are possible.

Slow down and use caution while traveling. Prepare for possible power outages. Check local Department of Transportation information services for the latest road conditions.


Winter Weather Advisory issued December 28 at 1:06AM EST until December 29 at 6:00AM EST by NWS Boston/Norton MA

Effective: Sun December 28, 2025, 1:06 AM
Expires: Sun December 28, 2025, 2:15 PM

* WHAT...Freezing rain expected. Total ice accumulations up to two tenths of an inch. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, and western Massachusetts, and northern Rhode Island. * WHEN...From 7 PM this evening to 6 AM EST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Difficult travel conditions are possible. The hazardous conditions could impact the Monday morning commute.

Slow down and use caution while traveling. Prepare for possible power outages. Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury.


Winter Weather Advisory issued December 28 at 1:06AM EST until December 29 at 6:00AM EST by NWS Boston/Norton MA

Effective: Sun December 28, 2025, 1:06 AM
Expires: Sun December 28, 2025, 2:15 PM

* WHAT...Freezing rain expected. Total ice accumulations around one tenth of an inch. * WHERE...In Massachusetts, Eastern Norfolk MA, Suffolk MA, and Eastern Essex MA Counties. In Rhode Island, Western Kent RI County. * WHEN...From 7 PM this evening to 6 AM EST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Difficult travel conditions are possible. The hazardous conditions could impact the Monday morning commute.

Slow down and use caution while traveling. Prepare for possible power outages. Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury.


Sunday, December 28, 2025

Weather Forecast

Conditions: Light freezing rain
Average Temperature: 24.4°F
Average Humidity: 75%
Chance of Rain: 91%
Wind: 12.3 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 9.04 μg/m3
PM10: 9.72 μg/m3
Carbon Monoxide: 320.45 μg/m3
Nitrogen Dioxide: 15.82 μg/m3
Sulphur Dioxide: 3.83 μg/m3
Ozone: 57.44 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:50 AM
Sunset: 4:27 PM
Daylight: 9 hrs 13 mins
Moonrise: 11:47 AM
Moon Transit: 6:36 PM
Moonset: 12:26 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

8:10 AM - 10:40 AM
6:06 PM - 8:36 PM

Minor Periods

11:17 AM - 12:47 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, December 29, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 42.6°F
Average Humidity: 93%
Chance of Rain: 86%
Wind: 27.7 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 8.83 μg/m3
PM10: 11.15 μg/m3
Carbon Monoxide: 198.89 μg/m3
Nitrogen Dioxide: 9.53 μg/m3
Sulphur Dioxide: 2.51 μg/m3
Ozone: 65.08 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:50 AM
Sunset: 4:28 PM
Daylight: 9 hrs 14 mins
Moonrise: 12:14 AM
Moon Transit: 7:28 PM
Moonset: 1:40 AM
Moon Phase: First Quarter
Moon Illumination: 73.5%

Best Times for Fishing or Hunting

Major Periods

9:00 AM - 11:30 AM
6:58 PM - 9:28 PM

Minor Periods

11:44 AM - 1:14 PM
1:10 AM - 2:40 AM

Action Rating: 2 out of 5

Tuesday, December 30, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 29.5°F
Average Humidity: 65%
Chance of Rain: 0%
Wind: 27.7 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 1.83 μg/m3
PM10: 1.84 μg/m3
Carbon Monoxide: 165.93 μg/m3
Nitrogen Dioxide: 4.71 μg/m3
Sulphur Dioxide: 2.36 μg/m3
Ozone: 70.88 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:51 AM
Sunset: 4:28 PM
Daylight: 9 hrs 14 mins
Moonrise: 12:46 AM
Moon Transit: 8:25 PM
Moonset: 2:58 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%

Best Times for Fishing or Hunting

Major Periods

9:55 AM - 12:25 AM
7:55 PM - 10:25 PM

Minor Periods

12:16 AM - 1:46 PM
2:28 AM - 3:58 AM

Action Rating: 2 out of 5

Wednesday, December 31, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 30.7°F
Average Humidity: 65%
Chance of Rain: 0%
Wind: 24.8 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 2.8 μg/m3
PM10: 2.89 μg/m3
Carbon Monoxide: 170.89 μg/m3
Nitrogen Dioxide: 7.09 μg/m3
Sulphur Dioxide: 3.6 μg/m3
Ozone: 72.6 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:51 AM
Sunset: 4:29 PM
Daylight: 9 hrs 15 mins
Moonrise: 1:28 PM
Moon Transit: 9:27 PM
Moonset: 4:18 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.5%

Best Times for Fishing or Hunting

Major Periods

10:55 AM - 1:25 PM
8:57 PM - 11:27 PM

Minor Periods

12:58 AM - 2:28 PM
3:48 AM - 5:18 AM

Action Rating: 2 out of 5

Thursday, January 1, 2026

Weather Forecast

Conditions: Moderate snow
Average Temperature: 32.3°F
Average Humidity: 78%
Chance of Rain: 85%
Wind: 19 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 3.71 μg/m3
PM10: 3.87 μg/m3
Carbon Monoxide: 177.12 μg/m3
Nitrogen Dioxide: 8.07 μg/m3
Sulphur Dioxide: 4.38 μg/m3
Ozone: 65.46 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:52 AM
Sunset: 4:30 PM
Daylight: 9 hrs 16 mins
Moonrise: 2:22 PM
Moon Transit: 10:33 PM
Moonset: 5:37 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 2:30 PM
12:00 AM - 12:00 AM

Minor Periods

1:52 PM - 3:22 PM
5:07 AM - 6:37 AM

Action Rating: 2 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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