Water Temperature of the Connecticut River in Old Lyme, CT
Current Water Temperature
Measurement Time: Monday, May 4, 2026, 6:45 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

Mon
H: 73°F
L: 40°F

Tue
H: 64°F
L: 49°F

Wed
H: 59°F
L: 54°F

Thu
H: 59°F
L: 50°F

Fri
H: 59°F
L: 43°F
Air Quality
Nitrogen Dioxide: 5.15 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 130 μg/m3
Astronomical
Sun Transit: 12:46 AM
Sunset: 7:50 PM
Daylight: 14 hrs 7 mins
Moon Transit: 2:39 AM
Moonset: 6:59 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.0%
Best Times for Fishing or Hunting
Major Periods
2:09 AM - 4:39 AM5:01 PM - 7:31 PM
Minor Periods
12:00 AM - 12:00 AM6:29 AM - 7:59 AM
Action Rating: 3 out of 5
Special Weather Statement issued May 3 at 1:31PM EDT by NWS Upton NY
Effective: Sun May 3, 2026, 1:31 PM
Expires: Mon May 4, 2026, 8:00 PM
The combination of drying fine fuels, southwest wind gusts between 25 and 30 mph, and relative humidity values between 25 and 35 percent will contribute to an elevated risk of fire spread for southern Connecticut Late Monday morning into early Monday evening. This forecast considers meteorological, fuel, and land conditions and has been developed in coordination with state fire and land management officials.
Special Weather Statement issued May 3 at 10:02PM EDT by NWS Upton NY
Effective: Sun May 3, 2026, 10:02 PM
Expires: Mon May 4, 2026, 10:00 PM
The combination of drying fine fuels, southwest wind gusts between 25 and 30 mph, and relative humidity values between 25 and 35 percent will contribute to an elevated risk of fire spread for southern Connecticut Late Monday morning into early Monday evening. This forecast considers meteorological, fuel, and land conditions and has been developed in coordination with state fire and land management officials.
Special Weather Statement issued May 4 at 6:08AM EDT by NWS Boston/Norton MA
Effective: Mon May 4, 2026, 6:08 AM
Expires: Mon May 4, 2026, 7:00 PM
..ELEVATED FIRE WEATHER POTENTIAL TODAY IN SOUTHERN NEW ENGLAND... The combination of southwest winds gusting to 30 to 35 mph, relative humidity as low as 25 to 35 percent, and a lack of significant rainfall over the past few days will lead to an elevated fire weather potential today.
Special Weather Statement issued May 3 at 1:31PM EDT by NWS Upton NY
Effective: Sun May 3, 2026, 1:31 PM
Expires: Mon May 4, 2026, 8:00 PM
Through this evening, the combination of drying fine fuels, northwest wind gusts between 25 and 35 mph, and relative humidity values between 20 and 30 percent will contribute to an elevated risk of fire spread for the Lower Hudson Valley, New York City and Long Island. Late Monday morning into early Monday evening, the combination of drying fine fuels, southwest wind gusts between 25 and 30 mph, and relative humidity values between 25 and 35 percent will contribute to an elevated risk of fire spread for the Lower Hudson Valley, New York City and northern and western portions of Long Island. This forecast considers meteorological, fuel, and land conditions and has been developed in coordination with state fire and land management officials. As a reminder, the annual statewide burn ban remains in effect until May 14. No burn permits are issued. Use extra caution if handling any potential ignition sources such as machinery or matches and ensure to properly extinguish or dispose of cigarette butts. Please refer to the New York State Department of Environmental Conservation website for more information on burn restrictions.
Special Weather Statement issued May 3 at 10:02PM EDT by NWS Upton NY
Effective: Sun May 3, 2026, 10:02 PM
Expires: Mon May 4, 2026, 10:00 PM
Late Monday morning into early Monday evening, the combination of drying fine fuels, southwest wind gusts between 25 and 30 mph, and relative humidity values between 25 and 35 percent will contribute to an elevated risk of fire spread for the Lower Hudson Valley, New York City and northern and western portions of Long Island. This forecast considers meteorological, fuel, and land conditions and has been developed in coordination with state fire and land management officials. As a reminder, the annual statewide burn ban remains in effect until May 14. No burn permits are issued. Use extra caution if handling any potential ignition sources such as machinery or matches and ensure to properly extinguish or dispose of cigarette butts. Please refer to the New York State Department of Environmental Conservation website for more information on burn restrictions.
Weather Forecast
Air Quality
Nitrogen Dioxide: 9.92 μg/m3
Sulphur Dioxide: 3.74 μg/m3
Ozone: 95 μg/m3
Astronomical
Sun Transit: 12:46 AM
Sunset: 7:50 PM
Daylight: 14 hrs 7 mins
Moon Transit: 2:39 AM
Moonset: 6:59 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.0%
Best Times for Fishing or Hunting
Major Periods
2:09 AM - 4:39 AM5:01 PM - 7:31 PM
Minor Periods
12:00 AM - 12:00 AM6:29 AM - 7:59 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.75 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 124.44 μg/m3
Astronomical
Sun Transit: 12:46 AM
Sunset: 7:51 PM
Daylight: 14 hrs 10 mins
Moon Transit: 3:30 AM
Moonset: 7:47 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.8%
Best Times for Fishing or Hunting
Major Periods
3:00 AM - 5:30 AM5:52 PM - 8:22 PM
Minor Periods
7:17 AM - 8:47 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.22 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 114.64 μg/m3
Astronomical
Sun Transit: 12:46 AM
Sunset: 7:52 PM
Daylight: 14 hrs 12 mins
Moon Transit: 4:22 AM
Moonset: 8:42 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.0%
Best Times for Fishing or Hunting
Major Periods
3:52 AM - 6:22 AM6:43 PM - 9:13 PM
Minor Periods
8:12 AM - 9:42 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 10.37 μg/m3
Sulphur Dioxide: 1.9 μg/m3
Ozone: 80.92 μg/m3
Astronomical
Sun Transit: 12:45 AM
Sunset: 7:53 PM
Daylight: 14 hrs 14 mins
Moon Transit: 5:12 AM
Moonset: 9:42 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.1%
Best Times for Fishing or Hunting
Major Periods
4:42 AM - 7:12 AM7:33 PM - 10:03 PM
Minor Periods
9:12 AM - 10:42 AM12:17 AM - 1:47 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 10.4 μg/m3
Sulphur Dioxide: 2.07 μg/m3
Ozone: 68.54 μg/m3
Astronomical
Sun Transit: 12:45 AM
Sunset: 7:54 PM
Daylight: 14 hrs 16 mins
Moon Transit: 6:01 AM
Moonset: 10:47 AM
Moon Phase: Last Quarter
Moon Illumination: 47.9%
Best Times for Fishing or Hunting
Major Periods
5:31 AM - 8:01 AM8:20 PM - 10:50 PM
Minor Periods
10:17 AM - 11:47 AM12:52 AM - 2:22 AM
Action Rating: 4 out of 5
