Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

72.1°F

Measurement Time: Thursday, September 10, 2026, 8:45 AM EDT

Temperature Locations

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Local Points of Interest

Ferry Landing State Park

Connecticut River

Station Name: CONNECTICUT RIVER AT OLD LYME, CT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 20 feet

Nearest Address:
336 Ferry Rd
Old Lyme, CT 06371
New London County

GPS Coordinates: 41.3125983, -72.3459166

Nearby Water Temperatures

East Branch Eightmile River, Lyme, CT (8 mi)
Eightmile River, East Haddam, CT (8.9 mi)
Orient Harbor, Orient, NY (12.3 mi)
Thames River, New London, CT (13.6 mi)
Thames River, Groton, CT (13.9 mi)
Mystic River, Noank, CT (18.8 mi)
Connecticut River, Middletown, CT (19.1 mi)
Mystic Harbor, Mystic, CT (19.7 mi)
Mystic River, Mystic, CT (19.9 mi)
Mystic River, Old Mystic, CT (20.4 mi)
Yantic River, Norwich, CT (20.6 mi)
Pawcatuck River, Westerly, RI (27 mi)
Fort Pond Bay, Montauk, NY (27.2 mi)
Quinnipiac River, Wallingford, CT (27.4 mi)
New Haven Harbor, New Haven, CT (29.3 mi)

Weather for Old Lyme, Connecticut

Current Weather

84°F
Mostly Sunny
Mostly Sunny
63%
W 9 mph
70°F

Weather Forecast

Mostly Sunny
This Afternoon
86°F - Mostly Sunny
Partly Cloudy
Tonight
63°F - Partly Cloudy
Mostly Sunny
Friday
77°F - Mostly Sunny
Mostly Clear
Friday Night
54°F - Mostly Clear
Sunny
Saturday
75°F - Sunny
Mostly Cloudy then Chance Rain Showers
Saturday Night
63°F - Mostly Cloudy then Chance Rain Showers
Showers And Thunderstorms Likely
Sunday
77°F - Showers And Thunderstorms Likely
Chance Showers And Thunderstorms then Partly Cloudy
Sunday Night
63°F - Chance Showers And Thunderstorms then Partly Cloudy
Mostly Sunny
Monday
78°F - Mostly Sunny
Partly Cloudy
Monday Night
61°F - Partly Cloudy
Sunny
Tuesday
77°F - Sunny
Partly Cloudy
Tuesday Night
66°F - Partly Cloudy
Mostly Sunny then Chance Showers And Thunderstorms
Wednesday
80°F - Mostly Sunny then Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Wednesday Night
61°F - Chance Showers And Thunderstorms

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:46 AM
Sunset: 7:07 PM
Daylight: 12 hrs 42 mins
Moonrise: 5:43 AM
Moon Transit: 12:22 AM
Moonset: 6:49 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:54 AM - 4:24 AM
11:52 AM - 2:22 PM

Minor Periods

6:19 PM - 7:49 PM
5:13 AM - 6:43 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:46 AM
Sunset: 7:07 PM
Daylight: 12 hrs 42 mins
Moonrise: 5:43 AM
Moon Transit: 12:22 AM
Moonset: 6:49 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:54 AM - 4:24 AM
11:52 AM - 2:22 PM

Minor Periods

6:19 PM - 7:49 PM
5:13 AM - 6:43 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:46 AM
Sunset: 7:07 PM
Daylight: 12 hrs 42 mins
Moonrise: 5:43 AM
Moon Transit: 12:22 AM
Moonset: 6:49 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:54 AM - 4:24 AM
11:52 AM - 2:22 PM

Minor Periods

6:19 PM - 7:49 PM
5:13 AM - 6:43 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 12:45 AM
Sunset: 7:05 PM
Daylight: 12 hrs 39 mins
Moonrise: 6:55 AM
Moon Transit: 1:08 PM
Moonset: 7:11 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

2:41 AM - 5:11 AM
12:38 AM - 3:08 PM

Minor Periods

6:41 PM - 8:11 PM
6:25 AM - 7:55 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 12:45 AM
Sunset: 7:05 PM
Daylight: 12 hrs 39 mins
Moonrise: 6:55 AM
Moon Transit: 1:08 PM
Moonset: 7:11 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

2:41 AM - 5:11 AM
12:38 AM - 3:08 PM

Minor Periods

6:41 PM - 8:11 PM
6:25 AM - 7:55 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 12:45 AM
Sunset: 7:04 PM
Daylight: 12 hrs 36 mins
Moonrise: 8:04 AM
Moon Transit: 1:53 PM
Moonset: 7:33 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:27 AM - 5:57 AM
1:23 PM - 3:53 PM

Minor Periods

7:03 PM - 8:33 PM
7:34 AM - 9:04 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 12:45 AM
Sunset: 7:04 PM
Daylight: 12 hrs 36 mins
Moonrise: 8:04 AM
Moon Transit: 1:53 PM
Moonset: 7:33 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:27 AM - 5:57 AM
1:23 PM - 3:53 PM

Minor Periods

7:03 PM - 8:33 PM
7:34 AM - 9:04 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:45 AM
Sunset: 7:02 PM
Daylight: 12 hrs 34 mins
Moonrise: 9:12 AM
Moon Transit: 2:39 PM
Moonset: 7:56 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

4:12 AM - 6:42 AM
2:09 PM - 4:39 PM

Minor Periods

7:26 PM - 8:56 PM
8:42 AM - 10:12 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:45 AM
Sunset: 7:02 PM
Daylight: 12 hrs 34 mins
Moonrise: 9:12 AM
Moon Transit: 2:39 PM
Moonset: 7:56 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

4:12 AM - 6:42 AM
2:09 PM - 4:39 PM

Minor Periods

7:26 PM - 8:56 PM
8:42 AM - 10:12 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:29 AM
Sun Transit: 12:44 AM
Sunset: 7:00 PM
Daylight: 12 hrs 31 mins
Moonrise: 10:20 AM
Moon Transit: 3:24 PM
Moonset: 8:22 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

4:57 AM - 7:27 AM
2:54 PM - 5:24 PM

Minor Periods

7:52 PM - 9:22 PM
9:50 AM - 11:20 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:29 AM
Sun Transit: 12:44 AM
Sunset: 7:00 PM
Daylight: 12 hrs 31 mins
Moonrise: 10:20 AM
Moon Transit: 3:24 PM
Moonset: 8:22 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

4:57 AM - 7:27 AM
2:54 PM - 5:24 PM

Minor Periods

7:52 PM - 9:22 PM
9:50 AM - 11:20 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:44 AM
Sunset: 6:59 PM
Daylight: 12 hrs 28 mins
Moonrise: 11:26 AM
Moon Transit: 4:12 PM
Moonset: 8:52 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

5:44 AM - 8:14 AM
3:42 PM - 6:12 PM

Minor Periods

8:22 PM - 9:52 PM
10:56 AM - 12:26 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:44 AM
Sunset: 6:59 PM
Daylight: 12 hrs 28 mins
Moonrise: 11:26 AM
Moon Transit: 4:12 PM
Moonset: 8:52 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

5:44 AM - 8:14 AM
3:42 PM - 6:12 PM

Minor Periods

8:22 PM - 9:52 PM
10:56 AM - 12:26 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 12:44 AM
Sunset: 6:57 PM
Daylight: 12 hrs 26 mins
Moonrise: 12:32 AM
Moon Transit: 5:01 PM
Moonset: 9:27 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

6:32 AM - 9:02 AM
4:31 PM - 7:01 PM

Minor Periods

8:57 PM - 10:27 PM
12:02 AM - 1:32 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 12:44 AM
Sunset: 6:57 PM
Daylight: 12 hrs 26 mins
Moonrise: 12:32 AM
Moon Transit: 5:01 PM
Moonset: 9:27 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

6:32 AM - 9:02 AM
4:31 PM - 7:01 PM

Minor Periods

8:57 PM - 10:27 PM
12:02 AM - 1:32 PM

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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