Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

74.5°F

Measurement Time: Saturday, September 12, 2026, 1:45 PM 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

71°F
Partly Cloudy
Partly Cloudy
79%
SE 5 mph
64°F

Weather Forecast

Mostly Cloudy then Chance Showers And Thunderstorms
Tonight
62°F - Mostly Cloudy then Chance Showers And Thunderstorms
Showers And Thunderstorms
Sunday
76°F - Showers And Thunderstorms
Chance Rain Showers
Sunday Night
63°F - Chance Rain Showers
Chance Rain Showers then Mostly Sunny
Monday
74°F - Chance Rain Showers then Mostly Sunny
Mostly Clear
Monday Night
52°F - Mostly Clear
Sunny
Tuesday
72°F - Sunny
Mostly Clear
Tuesday Night
54°F - Mostly Clear
Sunny
Wednesday
74°F - Sunny
Mostly Clear
Wednesday Night
60°F - Mostly Clear
Mostly Sunny
Thursday
78°F - Mostly Sunny
Slight Chance Rain Showers
Thursday Night
62°F - Slight Chance Rain Showers
Partly Sunny then Chance Rain Showers
Friday
78°F - Partly Sunny then Chance Rain Showers
Chance Rain Showers
Friday Night
57°F - Chance Rain Showers
Mostly Sunny
Saturday
73°F - Mostly Sunny

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

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: 6:32 AM
Sun Transit: 12:43 AM
Sunset: 6:55 PM
Daylight: 12 hrs 23 mins
Moonrise: 1:32 PM
Moon Transit: 5:52 PM
Moonset: 10:10 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

7:23 AM - 9:53 AM
5:22 PM - 7:52 PM

Minor Periods

9:40 PM - 11:10 PM
1:02 PM - 2:32 PM

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: 6:32 AM
Sun Transit: 12:43 AM
Sunset: 6:55 PM
Daylight: 12 hrs 23 mins
Moonrise: 1:32 PM
Moon Transit: 5:52 PM
Moonset: 10:10 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

7:23 AM - 9:53 AM
5:22 PM - 7:52 PM

Minor Periods

9:40 PM - 11:10 PM
1:02 PM - 2:32 PM

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: 6:33 AM
Sun Transit: 12:43 AM
Sunset: 6:53 PM
Daylight: 12 hrs 20 mins
Moonrise: 2:28 PM
Moon Transit: 6:44 PM
Moonset: 11:01 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

8:14 AM - 10:44 AM
6:14 PM - 8:44 PM

Minor Periods

12:00 AM - 12:00 AM
1:58 PM - 3:28 PM

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: 6:33 AM
Sun Transit: 12:43 AM
Sunset: 6:53 PM
Daylight: 12 hrs 20 mins
Moonrise: 2:28 PM
Moon Transit: 6:44 PM
Moonset: 11:01 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

8:14 AM - 10:44 AM
6:14 PM - 8:44 PM

Minor Periods

12:00 AM - 12:00 AM
1:58 PM - 3:28 PM

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: 6:34 AM
Sun Transit: 12:43 AM
Sunset: 6:52 PM
Daylight: 12 hrs 18 mins
Moonrise: 3:16 PM
Moon Transit: 7:35 PM
Moonset: 12:01 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

9:06 AM - 11:36 AM
7:05 PM - 9:35 PM

Minor Periods

2:46 PM - 4:16 PM
12:00 AM - 12:00 AM

Action Rating: 3 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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