Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

32.0°F

Measurement Time: Friday, September 25, 2026, 6:12 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

57°F
Rain
Rain
77%
NE 20 mph
50°F

Weather Forecast

Rain
Tonight
54°F - Rain
Rain
Saturday
63°F - Rain
Rain
Saturday Night
55°F - Rain
Rain
Sunday
68°F - Rain
Light Rain
Sunday Night
59°F - Light Rain
Light Rain
Monday
68°F - Light Rain
Light Rain Likely then Chance Rain Showers
Monday Night
57°F - Light Rain Likely then Chance Rain Showers
Slight Chance Rain Showers then Mostly Cloudy
Tuesday
70°F - Slight Chance Rain Showers then Mostly Cloudy
Mostly Cloudy
Tuesday Night
57°F - Mostly Cloudy
Mostly Sunny
Wednesday
72°F - Mostly Sunny
Partly Cloudy
Wednesday Night
59°F - Partly Cloudy
Mostly Sunny
Thursday
73°F - Mostly Sunny
Partly Cloudy
Thursday Night
60°F - Partly Cloudy
Mostly Sunny
Friday
74°F - Mostly Sunny

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:41 AM
Sunset: 6:42 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:05 PM
Moon Transit: 12:00 AM
Moonset: 5:24 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:35 PM - 7:05 PM
4:54 AM - 6:24 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: 6:40 AM
Sun Transit: 12:41 AM
Sunset: 6:42 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:05 PM
Moon Transit: 12:00 AM
Moonset: 5:24 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:35 PM - 7:05 PM
4:54 AM - 6:24 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: 6:41 AM
Sun Transit: 12:40 AM
Sunset: 6:40 PM
Daylight: 11 hrs 59 mins
Moonrise: 6:28 PM
Moon Transit: 8:33 AM
Moonset: 6:32 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

8:03 AM - 10:33 AM
8:03 AM - 10:33 AM

Minor Periods

5:58 PM - 7:28 PM
6:02 AM - 7:32 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: 6:41 AM
Sun Transit: 12:40 AM
Sunset: 6:40 PM
Daylight: 11 hrs 59 mins
Moonrise: 6:28 PM
Moon Transit: 8:33 AM
Moonset: 6:32 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

8:03 AM - 10:33 AM
8:03 AM - 10:33 AM

Minor Periods

5:58 PM - 7:28 PM
6:02 AM - 7:32 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: 6:42 AM
Sun Transit: 12:40 AM
Sunset: 6:38 PM
Daylight: 11 hrs 56 mins
Moonrise: 6:51 PM
Moon Transit: 12:00 AM
Moonset: 7:43 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:18 PM - 5:48 PM

Minor Periods

6:21 PM - 7:51 PM
7:13 AM - 8:43 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: 6:42 AM
Sun Transit: 12:40 AM
Sunset: 6:38 PM
Daylight: 11 hrs 56 mins
Moonrise: 6:51 PM
Moon Transit: 12:00 AM
Moonset: 7:43 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:18 PM - 5:48 PM

Minor Periods

6:21 PM - 7:51 PM
7:13 AM - 8:43 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: 6:43 AM
Sun Transit: 12:39 AM
Sunset: 6:36 PM
Daylight: 11 hrs 53 mins
Moonrise: 7:19 PM
Moon Transit: 1:46 AM
Moonset: 8:56 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

1:16 AM - 3:46 AM
4:08 PM - 6:38 PM

Minor Periods

6:49 PM - 8:19 PM
8:26 AM - 9:56 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: 6:43 AM
Sun Transit: 12:39 AM
Sunset: 6:36 PM
Daylight: 11 hrs 53 mins
Moonrise: 7:19 PM
Moon Transit: 1:46 AM
Moonset: 8:56 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

1:16 AM - 3:46 AM
4:08 PM - 6:38 PM

Minor Periods

6:49 PM - 8:19 PM
8:26 AM - 9:56 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: 6:44 AM
Sun Transit: 12:39 AM
Sunset: 6:35 PM
Daylight: 11 hrs 50 mins
Moonrise: 7:52 PM
Moon Transit: 2:38 AM
Moonset: 10:12 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:08 AM - 4:38 AM
5:02 PM - 7:32 PM

Minor Periods

7:22 PM - 8:52 PM
9:42 AM - 11:12 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: 6:44 AM
Sun Transit: 12:39 AM
Sunset: 6:35 PM
Daylight: 11 hrs 50 mins
Moonrise: 7:52 PM
Moon Transit: 2:38 AM
Moonset: 10:12 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:08 AM - 4:38 AM
5:02 PM - 7:32 PM

Minor Periods

7:22 PM - 8:52 PM
9:42 AM - 11:12 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

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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