Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

75.2°F

Measurement Time: Wednesday, September 9, 2026, 10:45 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

78°F
Partly Sunny
Partly Sunny
76%
S 10 mph
70°F

Weather Forecast

Partly Sunny
This Afternoon
80°F - Partly Sunny
Mostly Cloudy then Slight Chance Rain Showers
Tonight
71°F - Mostly Cloudy then Slight Chance Rain Showers
Slight Chance Rain Showers then Mostly Sunny
Thursday
86°F - Slight Chance Rain Showers then Mostly Sunny
Mostly Cloudy
Thursday Night
61°F - Mostly Cloudy
Sunny
Friday
76°F - Sunny
Mostly Clear
Friday Night
54°F - Mostly Clear
Mostly Sunny
Saturday
74°F - Mostly Sunny
Mostly Cloudy then Chance Rain Showers
Saturday Night
63°F - Mostly Cloudy then Chance Rain Showers
Chance Rain Showers
Sunday
77°F - Chance Rain Showers
Chance Rain Showers then Mostly Cloudy
Sunday Night
64°F - Chance Rain Showers then Mostly Cloudy
Mostly Sunny
Monday
79°F - Mostly Sunny
Partly Cloudy
Monday Night
60°F - Partly Cloudy
Mostly Sunny
Tuesday
77°F - Mostly Sunny
Partly Cloudy
Tuesday Night
66°F - Partly Cloudy

Astronomical

Sunrise: 6:24 AM
Sun Transit: 12:46 AM
Sunset: 7:09 PM
Daylight: 12 hrs 45 mins
Moonrise: 4:29 AM
Moon Transit: 11:34 AM
Moonset: 6:26 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

1:04 AM - 3:34 AM
11:04 AM - 1:34 PM

Minor Periods

5:56 PM - 7:26 PM
3:59 AM - 5:29 AM

Action Rating: 3 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: 6:24 AM
Sun Transit: 12:46 AM
Sunset: 7:09 PM
Daylight: 12 hrs 45 mins
Moonrise: 4:29 AM
Moon Transit: 11:34 AM
Moonset: 6:26 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

1:04 AM - 3:34 AM
11:04 AM - 1:34 PM

Minor Periods

5:56 PM - 7:26 PM
3:59 AM - 5:29 AM

Action Rating: 3 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: 6:24 AM
Sun Transit: 12:46 AM
Sunset: 7:09 PM
Daylight: 12 hrs 45 mins
Moonrise: 4:29 AM
Moon Transit: 11:34 AM
Moonset: 6:26 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

1:04 AM - 3:34 AM
11:04 AM - 1:34 PM

Minor Periods

5:56 PM - 7:26 PM
3:59 AM - 5:29 AM

Action Rating: 3 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

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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