Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

63.9°F

Measurement Time: Saturday, May 30, 2026, 3:45 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

50.1°F
Sunny
Sunny
47.2°F
50.1°F
62%
NE 13.4 mph
19 mph
47.2°F
37.7°F
0 in
0%
6 mi
1017 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Sat
H: 56°F
L: 47°F
Patchy rain nearby
Sun
H: 66°F
L: 43°F
Patchy rain nearby
Mon
H: 63°F
L: 49°F
Sunny
Tue
H: 64°F
L: 45°F
Sunny
Wed
H: 69°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 1.55 μg/m3
PM10: 1.65 μg/m3
Carbon Monoxide: 131.85 μg/m3
Nitrogen Dioxide: 2.45 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 75 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:47 AM
Sunset: 8:15 PM
Daylight: 14 hrs 56 mins
Moonrise: 8:10 PM
Moon Transit: 12:00 AM
Moonset: 4:20 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:06 PM - 4:36 PM

Minor Periods

7:40 PM - 9:10 PM
3:50 AM - 5:20 AM

Action Rating: 4 out of 5

Wind Advisory issued May 30 at 2:52AM EDT until May 30 at 8:00PM EDT by NWS Boston/Norton MA

Effective: Sat May 30, 2026, 2:52 AM
Expires: Sat May 30, 2026, 8:00 PM

* WHAT...North winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Portions of central, eastern, northeastern, and southeastern Massachusetts and northern and southern Rhode Island. * WHEN...From 8 AM this morning to 8 PM EDT this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and some power outages may result.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.
Saturday, May 30, 2026

Weather Forecast

Patchy rain nearby
55.6°F
46.9°F
52.1°F
67%
0.02 in
89%
0%
27.5 mph
5.9


Air Quality

AQI: 1 - Good
PM2.5: 4.02 μg/m3
PM10: 4.77 μg/m3
Carbon Monoxide: 141.14 μg/m3
Nitrogen Dioxide: 3.88 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 79.46 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:47 AM
Sunset: 8:15 PM
Daylight: 14 hrs 56 mins
Moonrise: 8:10 PM
Moon Transit: 12:00 AM
Moonset: 4:20 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:06 PM - 4:36 PM

Minor Periods

7:40 PM - 9:10 PM
3:50 AM - 5:20 AM

Action Rating: 4 out of 5

Sunday, May 31, 2026

Weather Forecast

Patchy rain nearby
66°F
42.6°F
55.5°F
66%
0 in
82%
0%
8.7 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 5.6 μg/m3
PM10: 7.01 μg/m3
Carbon Monoxide: 115.9 μg/m3
Nitrogen Dioxide: 3.18 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 82.25 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:47 AM
Sunset: 8:16 PM
Daylight: 14 hrs 57 mins
Moonrise: 9:08 PM
Moon Transit: 12:35 AM
Moonset: 4:58 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:05 AM - 2:35 AM
2:56 PM - 5:26 PM

Minor Periods

8:38 PM - 10:08 PM
4:28 AM - 5:58 AM

Action Rating: 4 out of 5

Monday, June 1, 2026

Weather Forecast

Patchy rain nearby
63.4°F
49.4°F
57°F
76%
0.12 in
89%
0%
11.2 mph
6.9


Air Quality

AQI: 1 - Good
PM2.5: 10.99 μg/m3
PM10: 14.45 μg/m3
Carbon Monoxide: 133.35 μg/m3
Nitrogen Dioxide: 6.45 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 88.96 μg/m3

Astronomical

Sunrise: 5:18 AM
Sun Transit: 12:47 AM
Sunset: 8:17 PM
Daylight: 14 hrs 58 mins
Moonrise: 10:01 PM
Moon Transit: 1:26 AM
Moonset: 5:43 AM
Moon Phase: Full
Moon Illumination: 96.8%

Best Times for Fishing or Hunting

Major Periods

12:56 AM - 3:26 AM
3:48 PM - 6:18 PM

Minor Periods

9:31 PM - 11:01 PM
5:13 AM - 6:43 AM

Action Rating: 4 out of 5

Tuesday, June 2, 2026

Weather Forecast

Sunny
64.3°F
44.5°F
55.3°F
65%
0 in
0%
0%
9.8 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 10.63 μg/m3
PM10: 14.33 μg/m3
Carbon Monoxide: 152.68 μg/m3
Nitrogen Dioxide: 5.14 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 85.83 μg/m3

Astronomical

Sunrise: 5:18 AM
Sun Transit: 12:47 AM
Sunset: 8:17 PM
Daylight: 14 hrs 59 mins
Moonrise: 10:46 PM
Moon Transit: 2:17 AM
Moonset: 6:36 AM
Moon Phase: Full
Moon Illumination: 91.7%

Best Times for Fishing or Hunting

Major Periods

1:47 AM - 4:17 AM
4:39 PM - 7:09 PM

Minor Periods

10:16 PM - 11:46 PM
6:06 AM - 7:36 AM

Action Rating: 3 out of 5

Wednesday, June 3, 2026

Weather Forecast

Sunny
68.8°F
51.6°F
59.9°F
69%
0 in
0%
0%
9.8 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 7.84 μg/m3
PM10: 11.14 μg/m3
Carbon Monoxide: 121.78 μg/m3
Nitrogen Dioxide: 2.9 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 88.67 μg/m3

Astronomical

Sunrise: 5:17 AM
Sun Transit: 12:47 AM
Sunset: 8:18 PM
Daylight: 15 hrs 1 mins
Moonrise: 11:22 PM
Moon Transit: 3:08 AM
Moonset: 7:35 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.4%

Best Times for Fishing or Hunting

Major Periods

2:38 AM - 5:08 AM
5:30 PM - 8:00 PM

Minor Periods

12:00 AM - 12:00 AM
7:05 AM - 8:35 AM

Action Rating: 4 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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