Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

74.8°F

Measurement Time: Sunday, August 30, 2026, 4:45 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

70°F

Conditions: Mostly Sunny

Humidity: 81%

Wind: W 5 mph

Dew Point: 64°F

Weather Forecast

Today
81°F - Mostly Sunny then Chance Rain Showers

Tonight
63°F - Chance Rain Showers

Monday
78°F - Mostly Sunny

Monday Night
64°F - Rain Showers Likely

Tuesday
79°F - Rain Showers Likely

Tuesday Night
63°F - Showers And Thunderstorms Likely

Wednesday
77°F - Chance Rain Showers

Wednesday Night
64°F - Showers And Thunderstorms Likely

Thursday
78°F - Showers And Thunderstorms Likely

Thursday Night
63°F - Chance Showers And Thunderstorms

Friday
78°F - Chance Showers And Thunderstorms

Friday Night
60°F - Chance Rain Showers

Saturday
76°F - Chance Rain Showers

Saturday Night
58°F - Chance Rain Showers

Astronomical

Sunrise: 6:14 AM
Sun Transit: 12:49 AM
Sunset: 7:25 PM
Daylight: 13 hrs 11 mins

Moonrise: 8:24 PM
Moon Transit: 12:49 AM
Moonset: 8:48 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.9%

Best Times for Fishing or Hunting

Major Periods

12:19 AM - 2:49 AM
12:19 AM - 2:49 AM

Minor Periods

7:54 PM - 9:24 PM
8:18 AM - 9:48 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:14 AM
Sun Transit: 12:49 AM
Sunset: 7:25 PM
Daylight: 13 hrs 11 mins

Moonrise: 8:24 PM
Moon Transit: 12:49 AM
Moonset: 8:48 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.9%

Best Times for Fishing or Hunting

Major Periods

12:19 AM - 2:49 AM
12:19 AM - 2:49 AM

Minor Periods

7:54 PM - 9:24 PM
8:18 AM - 9:48 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:14 AM
Sun Transit: 12:49 AM
Sunset: 7:25 PM
Daylight: 13 hrs 11 mins

Moonrise: 8:24 PM
Moon Transit: 12:49 AM
Moonset: 8:48 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.9%

Best Times for Fishing or Hunting

Major Periods

12:19 AM - 2:49 AM
12:19 AM - 2:49 AM

Minor Periods

7:54 PM - 9:24 PM
8:18 AM - 9:48 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:15 AM
Sun Transit: 12:49 AM
Sunset: 7:24 PM
Daylight: 13 hrs 9 mins

Moonrise: 8:48 PM
Moon Transit: 3:03 AM
Moonset: 9:57 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

2:33 AM - 5:03 AM
5:23 PM - 7:53 PM

Minor Periods

8:18 PM - 9:48 PM
9:27 AM - 10:57 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:15 AM
Sun Transit: 12:49 AM
Sunset: 7:24 PM
Daylight: 13 hrs 9 mins

Moonrise: 8:48 PM
Moon Transit: 3:03 AM
Moonset: 9:57 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

2:33 AM - 5:03 AM
5:23 PM - 7:53 PM

Minor Periods

8:18 PM - 9:48 PM
9:27 AM - 10:57 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:16 AM
Sun Transit: 12:49 AM
Sunset: 7:22 PM
Daylight: 13 hrs 6 mins

Moonrise: 9:16 PM
Moon Transit: 3:52 AM
Moonset: 11:10 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:22 AM - 5:52 AM
6:13 PM - 8:43 PM

Minor Periods

8:46 PM - 10:16 PM
10:40 AM - 12:10 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:16 AM
Sun Transit: 12:49 AM
Sunset: 7:22 PM
Daylight: 13 hrs 6 mins

Moonrise: 9:16 PM
Moon Transit: 3:52 AM
Moonset: 11:10 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:22 AM - 5:52 AM
6:13 PM - 8:43 PM

Minor Periods

8:46 PM - 10:16 PM
10:40 AM - 12:10 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:17 AM
Sun Transit: 12:49 AM
Sunset: 7:20 PM
Daylight: 13 hrs 3 mins

Moonrise: 9:51 PM
Moon Transit: 4:43 AM
Moonset: 12:25 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:13 AM - 6:43 AM
7:08 PM - 9:38 PM

Minor Periods

9:21 PM - 10:51 PM
11:55 AM - 1:25 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:17 AM
Sun Transit: 12:49 AM
Sunset: 7:20 PM
Daylight: 13 hrs 3 mins

Moonrise: 9:51 PM
Moon Transit: 4:43 AM
Moonset: 12:25 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:13 AM - 6:43 AM
7:08 PM - 9:38 PM

Minor Periods

9:21 PM - 10:51 PM
11:55 AM - 1:25 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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

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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