Water Temperature of the Connecticut River in Old Lyme, CT
Current Water Temperature
71.4°F
Measurement Time: Saturday, June 27, 2026, 3:45 PM EDT
Temperature Locations
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Local Points of Interest
Ferry Landing State ParkConnecticut 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
70°F

Mist
70°F
76.7°F
93%
WSW 5.4 mph
9.5 mph
72.7°F
66.5°F
0 in
100%
6 mi
1015 mbar
0
Five Day Weather Forecast

Sat
H: 87°F
L: 67°F

Sun
H: 77°F
L: 65°F

Mon
H: 79°F
L: 63°F

Tue
H: 78°F
L: 64°F

Wed
H: 85°F
L: 69°F
Air Quality
AQI:
1 - Good
PM2.5:
17.4 μg/m3
PM10:
18.5 μg/m3
Carbon Monoxide: 157 μg/m3
Nitrogen Dioxide: 18 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 114 μg/m3
Nitrogen Dioxide: 18 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 114 μg/m3
Astronomical
Sunrise: 5:18 AM
Sun Transit: 12:52 AM
Sunset: 8:27 PM
Daylight: 15 hrs 9 mins
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%
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 PM12:00 AM - 12:00 AM
Minor Periods
6:32 PM - 8:02 PM2:27 AM - 3:57 AM
Action Rating: 3 out of 5
Saturday, June 27, 2026
Weather Forecast
Sunny
86.5°F
66.9°F
75°F
77%
0.05 in
57%
0%
8.9 mph
7
Air Quality
AQI:
1 - Good
PM2.5:
14.19 μg/m3
PM10:
14.84 μg/m3
Carbon Monoxide: 162.17 μg/m3
Nitrogen Dioxide: 13.57 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 89 μg/m3
Nitrogen Dioxide: 13.57 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 89 μg/m3
Astronomical
Sunrise: 5:18 AM
Sun Transit: 12:52 AM
Sunset: 8:27 PM
Daylight: 15 hrs 9 mins
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%
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 PM12:00 AM - 12:00 AM
Minor Periods
6:32 PM - 8:02 PM2:27 AM - 3:57 AM
Action Rating: 3 out of 5
Sunday, June 28, 2026
Weather Forecast
Patchy rain nearby
76.7°F
65.2°F
70.2°F
85%
0.12 in
71%
0%
6.5 mph
8.8
Air Quality
AQI:
2 - Moderate
PM2.5:
15.53 μg/m3
PM10:
16.96 μg/m3
Carbon Monoxide: 157.08 μg/m3
Nitrogen Dioxide: 5.52 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 120.13 μg/m3
Nitrogen Dioxide: 5.52 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 120.13 μg/m3
Astronomical
Sunrise: 5:18 AM
Sun Transit: 12:52 AM
Sunset: 8:27 PM
Daylight: 15 hrs 9 mins
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%
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 AM1:43 PM - 4:13 PM
Minor Periods
7:27 PM - 8:57 PM3:10 AM - 4:40 AM
Action Rating: 3 out of 5
Monday, June 29, 2026
Weather Forecast
Sunny
78.9°F
63.3°F
69.8°F
79%
0 in
10%
0%
11.2 mph
8.9
Air Quality
AQI:
2 - Moderate
PM2.5:
15.73 μg/m3
PM10:
17.73 μg/m3
Carbon Monoxide: 160.04 μg/m3
Nitrogen Dioxide: 7.36 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 117.83 μg/m3
Nitrogen Dioxide: 7.36 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 117.83 μg/m3
Astronomical
Sunrise: 5:19 AM
Sun Transit: 12:52 AM
Sunset: 8:27 PM
Daylight: 15 hrs 8 mins
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%
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 AM2:35 PM - 5:05 PM
Minor Periods
8:14 PM - 9:44 PM4:01 AM - 5:31 AM
Action Rating: 5 out of 5
Tuesday, June 30, 2026
Weather Forecast
Partly Cloudy
78.3°F
63.9°F
70.7°F
78%
0 in
12%
0%
14.1 mph
8.7
Air Quality
AQI:
1 - Good
PM2.5:
9.1 μg/m3
PM10:
12.05 μg/m3
Carbon Monoxide: 154.21 μg/m3
Nitrogen Dioxide: 4.54 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 101 μg/m3
Nitrogen Dioxide: 4.54 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 101 μg/m3
Astronomical
Sunrise: 5:19 AM
Sun Transit: 12:53 AM
Sunset: 8:27 PM
Daylight: 15 hrs 8 mins
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%
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 AM3:25 PM - 5:55 PM
Minor Periods
8:53 PM - 10:23 PM4:58 AM - 6:28 AM
Action Rating: 5 out of 5
Wednesday, July 1, 2026
Weather Forecast
Sunny
85.4°F
68.9°F
75.6°F
72%
0 in
7%
0%
16.6 mph
9.9
Air Quality
AQI:
1 - Good
PM2.5:
7.61 μg/m3
PM10:
10.83 μg/m3
Carbon Monoxide: 138.22 μg/m3
Nitrogen Dioxide: 4.57 μg/m3
Sulphur Dioxide: 0.61 μg/m3
Ozone: 78.89 μg/m3
Nitrogen Dioxide: 4.57 μg/m3
Sulphur Dioxide: 0.61 μg/m3
Ozone: 78.89 μg/m3
Astronomical
Sunrise: 5:20 AM
Sun Transit: 12:53 AM
Sunset: 8:27 PM
Daylight: 15 hrs 7 mins
Sun Transit: 12:53 AM
Sunset: 8:27 PM
Daylight: 15 hrs 7 mins
Moonrise: 9:56 PM
Moon Transit: 1:54 AM
Moonset: 6:31 AM
Moon Phase: Full
Moon Illumination: 94.7%
Moon Transit: 1:54 AM
Moonset: 6:31 AM
Moon Phase: Full
Moon Illumination: 94.7%
Best Times for Fishing or Hunting
Major Periods
1:24 AM - 3:54 AM4:14 PM - 6:44 PM
Minor Periods
9:26 PM - 10:56 PM6:01 AM - 7:31 AM
Action Rating: 3 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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