Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

63.7°F

Measurement Time: Wednesday, September 30, 2026, 12:45 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

55°F
Mostly Cloudy
Mostly Cloudy
100%
N 1 mph
55°F

Weather Forecast

Mostly Cloudy
Overnight
54°F - Mostly Cloudy
Mostly Sunny
Wednesday
70°F - Mostly Sunny
Mostly Cloudy
Wednesday Night
58°F - Mostly Cloudy
Partly Sunny
Thursday
75°F - Partly Sunny
Partly Cloudy
Thursday Night
63°F - Partly Cloudy
Mostly Sunny
Friday
78°F - Mostly Sunny
Chance Rain Showers
Friday Night
57°F - Chance Rain Showers
Chance Rain Showers then Mostly Sunny
Saturday
70°F - Chance Rain Showers then Mostly Sunny
Partly Cloudy
Saturday Night
49°F - Partly Cloudy
Partly Sunny then Slight Chance Rain Showers
Sunday
65°F - Partly Sunny then Slight Chance Rain Showers
Chance Rain Showers
Sunday Night
51°F - Chance Rain Showers
Slight Chance Rain Showers then Mostly Sunny
Monday
64°F - Slight Chance Rain Showers then Mostly Sunny
Mostly Clear
Monday Night
43°F - Mostly Clear
Sunny
Tuesday
59°F - Sunny

Astronomical

Sunrise: 6:45 AM
Sun Transit: 12:39 AM
Sunset: 6:33 PM
Daylight: 11 hrs 48 mins
Moonrise: 8:34 PM
Moon Transit: 3:34 AM
Moonset: 11:29 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:04 AM - 5:34 AM
6:01 PM - 8:31 PM

Minor Periods

8:04 PM - 9:34 PM
10:59 AM - 12:29 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: 6:45 AM
Sun Transit: 12:39 AM
Sunset: 6:33 PM
Daylight: 11 hrs 48 mins
Moonrise: 8:34 PM
Moon Transit: 3:34 AM
Moonset: 11:29 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:04 AM - 5:34 AM
6:01 PM - 8:31 PM

Minor Periods

8:04 PM - 9:34 PM
10:59 AM - 12:29 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: 6:45 AM
Sun Transit: 12:39 AM
Sunset: 6:33 PM
Daylight: 11 hrs 48 mins
Moonrise: 8:34 PM
Moon Transit: 3:34 AM
Moonset: 11:29 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:04 AM - 5:34 AM
6:01 PM - 8:31 PM

Minor Periods

8:04 PM - 9:34 PM
10:59 AM - 12:29 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: 6:45 AM
Sun Transit: 12:39 AM
Sunset: 6:33 PM
Daylight: 11 hrs 48 mins
Moonrise: 8:34 PM
Moon Transit: 3:34 AM
Moonset: 11:29 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:04 AM - 5:34 AM
6:01 PM - 8:31 PM

Minor Periods

8:04 PM - 9:34 PM
10:59 AM - 12:29 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: 6:46 AM
Sun Transit: 12:38 AM
Sunset: 6:31 PM
Daylight: 11 hrs 45 mins
Moonrise: 9:27 PM
Moon Transit: 4:34 AM
Moonset: 12:43 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:04 AM - 6:34 AM
7:03 PM - 9:33 PM

Minor Periods

8:57 PM - 10:27 PM
12:13 AM - 1:43 PM

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: 6:46 AM
Sun Transit: 12:38 AM
Sunset: 6:31 PM
Daylight: 11 hrs 45 mins
Moonrise: 9:27 PM
Moon Transit: 4:34 AM
Moonset: 12:43 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:04 AM - 6:34 AM
7:03 PM - 9:33 PM

Minor Periods

8:57 PM - 10:27 PM
12:13 AM - 1:43 PM

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: 6:47 AM
Sun Transit: 12:38 AM
Sunset: 6:30 PM
Daylight: 11 hrs 42 mins
Moonrise: 10:31 PM
Moon Transit: 5:37 AM
Moonset: 1:48 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:07 AM - 7:37 AM
8:06 PM - 10:36 PM

Minor Periods

10:01 PM - 11:31 PM
1:18 PM - 2:48 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: 6:47 AM
Sun Transit: 12:38 AM
Sunset: 6:30 PM
Daylight: 11 hrs 42 mins
Moonrise: 10:31 PM
Moon Transit: 5:37 AM
Moonset: 1:48 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:07 AM - 7:37 AM
8:06 PM - 10:36 PM

Minor Periods

10:01 PM - 11:31 PM
1:18 PM - 2:48 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: 6:48 AM
Sun Transit: 12:38 AM
Sunset: 6:28 PM
Daylight: 11 hrs 40 mins
Moonrise: 11:43 PM
Moon Transit: 6:39 AM
Moonset: 2:43 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

6:09 AM - 8:39 AM
9:07 PM - 11:37 PM

Minor Periods

12:00 AM - 12:00 AM
2:13 PM - 3:43 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: 6:48 AM
Sun Transit: 12:38 AM
Sunset: 6:28 PM
Daylight: 11 hrs 40 mins
Moonrise: 11:43 PM
Moon Transit: 6:39 AM
Moonset: 2:43 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

6:09 AM - 8:39 AM
9:07 PM - 11:37 PM

Minor Periods

12:00 AM - 12:00 AM
2:13 PM - 3:43 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: 6:50 AM
Sun Transit: 12:38 AM
Sunset: 6:26 PM
Daylight: 11 hrs 37 mins
Moonrise: 12:43 AM
Moon Transit: 7:39 AM
Moonset: 3:25 PM
Moon Phase: Last Quarter
Moon Illumination: 32.9%

Best Times for Fishing or Hunting

Major Periods

7:09 AM - 9:39 AM
12:00 AM - 12:00 AM

Minor Periods

2:55 PM - 4:25 PM
12:00 AM - 12:00 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: 6:50 AM
Sun Transit: 12:38 AM
Sunset: 6:26 PM
Daylight: 11 hrs 37 mins
Moonrise: 12:43 AM
Moon Transit: 7:39 AM
Moonset: 3:25 PM
Moon Phase: Last Quarter
Moon Illumination: 32.9%

Best Times for Fishing or Hunting

Major Periods

7:09 AM - 9:39 AM
12:00 AM - 12:00 AM

Minor Periods

2:55 PM - 4:25 PM
12:00 AM - 12:00 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: 6:51 AM
Sun Transit: 12:37 AM
Sunset: 6:25 PM
Daylight: 11 hrs 34 mins
Moonrise: 12:59 AM
Moon Transit: 8:35 AM
Moonset: 4:00 PM
Moon Phase: Last Quarter
Moon Illumination: 22.8%

Best Times for Fishing or Hunting

Major Periods

8:05 AM - 10:35 AM
12:00 AM - 12:00 AM

Minor Periods

3:30 PM - 5:00 PM
12:29 AM - 1:59 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: 6:51 AM
Sun Transit: 12:37 AM
Sunset: 6:25 PM
Daylight: 11 hrs 34 mins
Moonrise: 12:59 AM
Moon Transit: 8:35 AM
Moonset: 4:00 PM
Moon Phase: Last Quarter
Moon Illumination: 22.8%

Best Times for Fishing or Hunting

Major Periods

8:05 AM - 10:35 AM
12:00 AM - 12:00 AM

Minor Periods

3:30 PM - 5:00 PM
12:29 AM - 1:59 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: 6:52 AM
Sun Transit: 12:37 AM
Sunset: 6:23 PM
Daylight: 11 hrs 31 mins
Moonrise: 2:14 AM
Moon Transit: 9:27 AM
Moonset: 4:28 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

8:57 AM - 11:27 AM
12:00 AM - 12:00 AM

Minor Periods

3:58 PM - 5:28 PM
1:44 AM - 3:14 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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