Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

70.9°F

Measurement Time: Friday, June 26, 2026, 2:45 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

72°F
Sunny
Sunny
76.3°F
80.2°F
87%
S 6.3 mph
13.2 mph
76.5°F
70°F
0 in
0%
9 mi
1016 mbar
0.2

Five Day Weather Forecast

Heavy rain
Fri
H: 81°F
L: 64°F
Partly Cloudy
Sat
H: 75°F
L: 65°F
Patchy rain nearby
Sun
H: 77°F
L: 64°F
Patchy rain nearby
Mon
H: 77°F
L: 63°F
Patchy rain nearby
Tue
H: 76°F
L: 65°F

Air Quality

AQI: 1 - Good
PM2.5: 14.6 μg/m3
PM10: 18 μg/m3
Carbon Monoxide: 161 μg/m3
Nitrogen Dioxide: 13.6 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 110 μg/m3

Astronomical

Sunrise: 5:18 AM
Sun Transit: 12:52 AM
Sunset: 8:27 PM
Daylight: 15 hrs 9 mins
Moonrise: 6:03 PM
Moon Transit: 10:31 PM
Moonset: 2:21 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 89.2%

Best Times for Fishing or Hunting

Major Periods

12:03 AM - 2:33 PM
12:00 AM - 12:00 AM

Minor Periods

5:33 PM - 7:03 PM
1:51 AM - 3:21 AM

Action Rating: 2 out of 5

Friday, June 26, 2026

Weather Forecast

Heavy rain
81°F
64.4°F
70.4°F
85%
1.36 in
80%
0%
9.6 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 11.64 μg/m3
PM10: 15.61 μg/m3
Carbon Monoxide: 127.71 μg/m3
Nitrogen Dioxide: 6.95 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 97.13 μg/m3

Astronomical

Sunrise: 5:18 AM
Sun Transit: 12:52 AM
Sunset: 8:27 PM
Daylight: 15 hrs 9 mins
Moonrise: 6:03 PM
Moon Transit: 10:31 PM
Moonset: 2:21 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 89.2%

Best Times for Fishing or Hunting

Major Periods

12:03 AM - 2:33 PM
12:00 AM - 12:00 AM

Minor Periods

5:33 PM - 7:03 PM
1:51 AM - 3:21 AM

Action Rating: 2 out of 5

Saturday, June 27, 2026

Weather Forecast

Partly Cloudy
75.3°F
64.8°F
69.5°F
81%
0 in
14%
0%
8.1 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 12.68 μg/m3
PM10: 13.09 μg/m3
Carbon Monoxide: 149.79 μg/m3
Nitrogen Dioxide: 19.35 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 61.04 μg/m3

Astronomical

Sunrise: 5:18 AM
Sun Transit: 12:52 AM
Sunset: 8:27 PM
Daylight: 15 hrs 9 mins
Moonrise: 7:02 PM
Moon Transit: 11:22 PM
Moonset: 2:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.2%

Best Times for Fishing or Hunting

Major Periods

12:52 AM - 3:22 PM
12:00 AM - 12:00 AM

Minor Periods

6:32 PM - 8:02 PM
2:27 AM - 3:57 AM

Action Rating: 3 out of 5

Sunday, June 28, 2026

Weather Forecast

Patchy rain nearby
76.9°F
63.7°F
69.3°F
82%
0 in
23%
0%
7.4 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 15.43 μg/m3
PM10: 15.97 μg/m3
Carbon Monoxide: 147.75 μg/m3
Nitrogen Dioxide: 9.11 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 119.75 μg/m3

Astronomical

Sunrise: 5:18 AM
Sun Transit: 12:52 AM
Sunset: 8:27 PM
Daylight: 15 hrs 9 mins
Moonrise: 7:57 PM
Moon Transit: 12:00 AM
Moonset: 3:40 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:43 PM - 4:13 PM

Minor Periods

7:27 PM - 8:57 PM
3:10 AM - 4:40 AM

Action Rating: 3 out of 5

Monday, June 29, 2026

Weather Forecast

Patchy rain nearby
76.9°F
63.2°F
69.3°F
83%
0.01 in
24%
0%
9.8 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 13.15 μg/m3
PM10: 13.95 μg/m3
Carbon Monoxide: 143.37 μg/m3
Nitrogen Dioxide: 6.89 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 124.96 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:52 AM
Sunset: 8:27 PM
Daylight: 15 hrs 8 mins
Moonrise: 8:44 PM
Moon Transit: 12:13 AM
Moonset: 4:31 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:35 PM - 5:05 PM

Minor Periods

8:14 PM - 9:44 PM
4:01 AM - 5:31 AM

Action Rating: 5 out of 5

Tuesday, June 30, 2026

Weather Forecast

Patchy rain nearby
76.2°F
64.8°F
70°F
86%
0.03 in
50%
0%
12.8 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 10.33 μg/m3
PM10: 12.71 μg/m3
Carbon Monoxide: 172.78 μg/m3
Nitrogen Dioxide: 5.77 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 106.22 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:53 AM
Sunset: 8:27 PM
Daylight: 15 hrs 8 mins
Moonrise: 9:23 PM
Moon Transit: 1:04 AM
Moonset: 5:28 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

12:34 AM - 3:04 AM
3:25 PM - 5:55 PM

Minor Periods

8:53 PM - 10:23 PM
4:58 AM - 6:28 AM

Action Rating: 5 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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