Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

74.5°F

Measurement Time: Wednesday, September 2, 2026, 7:45 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

66°F
Slight Chance Rain Showers
Slight Chance Rain Showers
100%
SE 2 mph
66°F

Weather Forecast

Showers And Thunderstorms
Overnight
64°F - Showers And Thunderstorms
Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Thursday
82°F - Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Chance Showers And Thunderstorms then Partly Cloudy
Thursday Night
66°F - Chance Showers And Thunderstorms then Partly Cloudy
Sunny
Friday
83°F - Sunny
Mostly Clear
Friday Night
61°F - Mostly Clear
Sunny then Chance Rain Showers
Saturday
77°F - Sunny then Chance Rain Showers
Chance Rain Showers then Partly Cloudy
Saturday Night
56°F - Chance Rain Showers then Partly Cloudy
Mostly Sunny
Sunday
73°F - Mostly Sunny
Mostly Clear
Sunday Night
56°F - Mostly Clear
Sunny
Labor Day
76°F - Sunny
Partly Cloudy
Monday Night
60°F - Partly Cloudy
Mostly Sunny
Tuesday
77°F - Mostly Sunny
Partly Cloudy
Tuesday Night
59°F - Partly Cloudy
Mostly Sunny
Wednesday
76°F - Mostly Sunny

Astronomical

Sunrise: 6:18 AM
Sun Transit: 12:48 AM
Sunset: 7:19 PM
Daylight: 13 hrs 1 mins
Moonrise: 10:36 PM
Moon Transit: 5:40 AM
Moonset: 1:40 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:10 AM - 7:40 AM
8:07 PM - 10:37 PM

Minor Periods

10:06 PM - 11:36 PM
1:10 PM - 2:40 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: 6:18 AM
Sun Transit: 12:48 AM
Sunset: 7:19 PM
Daylight: 13 hrs 1 mins
Moonrise: 10:36 PM
Moon Transit: 5:40 AM
Moonset: 1:40 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:10 AM - 7:40 AM
8:07 PM - 10:37 PM

Minor Periods

10:06 PM - 11:36 PM
1:10 PM - 2:40 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: 6:18 AM
Sun Transit: 12:48 AM
Sunset: 7:19 PM
Daylight: 13 hrs 1 mins
Moonrise: 10:36 PM
Moon Transit: 5:40 AM
Moonset: 1:40 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:10 AM - 7:40 AM
8:07 PM - 10:37 PM

Minor Periods

10:06 PM - 11:36 PM
1:10 PM - 2:40 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: 6:18 AM
Sun Transit: 12:48 AM
Sunset: 7:19 PM
Daylight: 13 hrs 1 mins
Moonrise: 10:36 PM
Moon Transit: 5:40 AM
Moonset: 1:40 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:10 AM - 7:40 AM
8:07 PM - 10:37 PM

Minor Periods

10:06 PM - 11:36 PM
1:10 PM - 2:40 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: 6:19 AM
Sun Transit: 12:48 AM
Sunset: 7:17 PM
Daylight: 12 hrs 58 mins
Moonrise: 11:31 PM
Moon Transit: 6:40 AM
Moonset: 2:51 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:10 AM - 8:40 AM
9:09 PM - 11:39 PM

Minor Periods

12:00 AM - 12:00 AM
2:21 PM - 3:51 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: 6:19 AM
Sun Transit: 12:48 AM
Sunset: 7:17 PM
Daylight: 12 hrs 58 mins
Moonrise: 11:31 PM
Moon Transit: 6:40 AM
Moonset: 2:51 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:10 AM - 8:40 AM
9:09 PM - 11:39 PM

Minor Periods

12:00 AM - 12:00 AM
2:21 PM - 3:51 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: 6:20 AM
Sun Transit: 12:48 AM
Sunset: 7:15 PM
Daylight: 12 hrs 55 mins
Moonrise: 12:31 AM
Moon Transit: 7:43 AM
Moonset: 3:53 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:13 AM - 9:43 AM
12:00 AM - 12:00 AM

Minor Periods

3:23 PM - 4:53 PM
12:00 AM - 12:00 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: 6:20 AM
Sun Transit: 12:48 AM
Sunset: 7:15 PM
Daylight: 12 hrs 55 mins
Moonrise: 12:31 AM
Moon Transit: 7:43 AM
Moonset: 3:53 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:13 AM - 9:43 AM
12:00 AM - 12:00 AM

Minor Periods

3:23 PM - 4:53 PM
12:00 AM - 12:00 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: 6:21 AM
Sun Transit: 12:47 AM
Sunset: 7:14 PM
Daylight: 12 hrs 53 mins
Moonrise: 12:39 AM
Moon Transit: 8:45 AM
Moonset: 4:45 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:15 AM - 10:45 AM
12:00 AM - 12:00 AM

Minor Periods

4:15 PM - 5:45 PM
12:09 AM - 1:39 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: 6:21 AM
Sun Transit: 12:47 AM
Sunset: 7:14 PM
Daylight: 12 hrs 53 mins
Moonrise: 12:39 AM
Moon Transit: 8:45 AM
Moonset: 4:45 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:15 AM - 10:45 AM
12:00 AM - 12:00 AM

Minor Periods

4:15 PM - 5:45 PM
12:09 AM - 1:39 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: 6:22 AM
Sun Transit: 12:47 AM
Sunset: 7:12 PM
Daylight: 12 hrs 50 mins
Moonrise: 1:54 AM
Moon Transit: 9:46 AM
Moonset: 5:26 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:16 AM - 11:46 AM

Minor Periods

4:56 PM - 6:26 PM
1:24 AM - 2:54 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: 6:22 AM
Sun Transit: 12:47 AM
Sunset: 7:12 PM
Daylight: 12 hrs 50 mins
Moonrise: 1:54 AM
Moon Transit: 9:46 AM
Moonset: 5:26 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:16 AM - 11:46 AM

Minor Periods

4:56 PM - 6:26 PM
1:24 AM - 2:54 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: 6:23 AM
Sun Transit: 12:47 AM
Sunset: 7:10 PM
Daylight: 12 hrs 47 mins
Moonrise: 3:12 AM
Moon Transit: 10:42 AM
Moonset: 5:58 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:11 AM - 2:41 AM
10:12 AM - 12:42 AM

Minor Periods

5:28 PM - 6:58 PM
2:42 AM - 4:12 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: 6:23 AM
Sun Transit: 12:47 AM
Sunset: 7:10 PM
Daylight: 12 hrs 47 mins
Moonrise: 3:12 AM
Moon Transit: 10:42 AM
Moonset: 5:58 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:11 AM - 2:41 AM
10:12 AM - 12:42 AM

Minor Periods

5:28 PM - 6:58 PM
2:42 AM - 4:12 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

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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