Water Temperature of the Connecticut River in Old Lyme, CT
Current Water Temperature
Measurement Time: Saturday, June 20, 2026, 11:45 AM EDT
Temperature Locations
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Local Points of Interest
Ferry Landing State ParkStation 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

Five Day Weather Forecast

Sat
H: 80°F
L: 62°F

Sun
H: 76°F
L: 58°F

Mon
H: 67°F
L: 60°F

Tue
H: 68°F
L: 62°F

Wed
H: 77°F
L: 58°F
Air Quality
Nitrogen Dioxide: 1.4 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 97 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 8:26 PM
Daylight: 15 hrs 10 mins
Moon Transit: 6:05 PM
Moonset: 12:01 AM
Moon Phase: Waxing Crescent
Moon Illumination: 27.8%
Best Times for Fishing or Hunting
Major Periods
7:38 AM - 10:08 AM5:35 PM - 8:05 PM
Minor Periods
11:05 AM - 12:35 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Special Weather Statement issued June 20 at 2:51AM EDT by NWS Upton NY
Effective: Sat June 20, 2026, 2:51 AM
Expires: Sat June 20, 2026, 5:00 PM
The combination of northwest winds gusting to 25 to 30 mph, relative humidity as low as 35 percent, and a lack of significant rainfall recently will lead to an elevated fire spread potential today. This forecast considers meteorological, fuel, and land conditions and has been developed in coordination with state fire and land management officials.
Small Craft Advisory issued June 20 at 2:19AM EDT until June 20 at 6:00PM EDT by NWS Upton NY
Effective: Sat June 20, 2026, 2:19 AM
Expires: Sat June 20, 2026, 6:00 PM
* WHAT...West winds 10 to 20 kt with gusts up to 25 kt and seas 2 to 4 feet on Long Island Sound. * WHERE...Long Island Sound, New York Harbor, Peconic and Gardiners Bays, and South Shore Bays from Jones Inlet through Shinnecock Bay. * WHEN...Until 6 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Small Craft Advisory issued June 20 at 2:28PM EDT until June 20 at 6:00PM EDT by NWS Upton NY
Effective: Sat June 20, 2026, 2:28 PM
Expires: Sat June 20, 2026, 6:00 PM
* WHAT...West winds 10 to 15 kt with gusts up to 25 kt. * WHERE...Long Island Sound, New York Harbor, Peconic and Gardiners Bays, and South Shore Bays from Jones Inlet through Shinnecock Bay. * WHEN...Until 6 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.35 μg/m3
Sulphur Dioxide: 0.41 μg/m3
Ozone: 80.38 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 8:26 PM
Daylight: 15 hrs 10 mins
Moon Transit: 6:05 PM
Moonset: 12:01 AM
Moon Phase: Waxing Crescent
Moon Illumination: 27.8%
Best Times for Fishing or Hunting
Major Periods
7:38 AM - 10:08 AM5:35 PM - 8:05 PM
Minor Periods
11:05 AM - 12:35 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 7.76 μg/m3
Sulphur Dioxide: 0.67 μg/m3
Ozone: 84.38 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 8:26 PM
Daylight: 15 hrs 10 mins
Moon Transit: 6:48 PM
Moonset: 12:23 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%
Best Times for Fishing or Hunting
Major Periods
8:22 AM - 10:52 AM6:18 PM - 8:48 PM
Minor Periods
12:13 AM - 1:43 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 11.35 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 80.33 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 8:27 PM
Daylight: 15 hrs 10 mins
Moon Transit: 7:30 PM
Moonset: 12:44 AM
Moon Phase: First Quarter
Moon Illumination: 49.7%
Best Times for Fishing or Hunting
Major Periods
9:05 AM - 11:35 AM7:00 PM - 9:30 PM
Minor Periods
1:18 PM - 2:48 PM12:14 AM - 1:44 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.07 μg/m3
Sulphur Dioxide: 0.41 μg/m3
Ozone: 91.42 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 8:27 PM
Daylight: 15 hrs 10 mins
Moon Transit: 8:13 PM
Moonset: 1:04 AM
Moon Phase: First Quarter
Moon Illumination: 61.0%
Best Times for Fishing or Hunting
Major Periods
9:47 AM - 12:17 AM7:43 PM - 10:13 PM
Minor Periods
2:22 PM - 3:52 PM12:34 AM - 2:04 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.01 μg/m3
Sulphur Dioxide: 0.34 μg/m3
Ozone: 56.56 μg/m3
Astronomical
Sun Transit: 12:51 AM
Sunset: 8:27 PM
Daylight: 15 hrs 10 mins
Moon Transit: 8:57 PM
Moonset: 1:26 AM
Moon Phase: First Quarter
Moon Illumination: 71.7%
Best Times for Fishing or Hunting
Major Periods
10:30 AM - 1:00 PM8:27 PM - 10:57 PM
Minor Periods
3:26 PM - 4:56 PM12:56 AM - 2:26 AM
Action Rating: 3 out of 5
