Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

73.4°F

Measurement Time: Tuesday, September 8, 2026, 2:45 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

62°F

Conditions: Mostly Sunny

Humidity: 81%

Wind: NW 5 mph

Dew Point: 56°F

Weather Forecast

Today
81°F - Sunny

Tonight
64°F - Partly Cloudy

Wednesday
81°F - Partly Sunny

Wednesday Night
70°F - Partly Cloudy

Thursday
84°F - Chance Rain Showers

Thursday Night
62°F - Chance Showers And Thunderstorms

Friday
76°F - Mostly Sunny

Friday Night
56°F - Mostly Clear

Saturday
74°F - Sunny

Saturday Night
62°F - Partly Cloudy then Slight Chance Rain Showers

Sunday
78°F - Slight Chance Rain Showers then Mostly Sunny

Sunday Night
63°F - Slight Chance Rain Showers

Monday
79°F - Partly Sunny

Monday Night
61°F - Partly Cloudy then Slight Chance Rain Showers

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

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: 6:23 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

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: 6:23 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

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: 6:24 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

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: 6:24 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

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: 6:25 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

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: 6:25 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

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: 6:26 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

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: 6:26 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

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: 6:27 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

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: 6:27 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

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: 6:28 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

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: 6:28 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

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: 6:29 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

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: 6:29 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

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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