Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

58.3°F

Measurement Time: Wednesday, October 29, 2025, 11:45 AM EDT

Temperature Locations

View Nearby Locations     View All Connecticut Locations     View Locations Near Me

Local Points of Interest

Ferry Landing State Park

Sponsored Content

Connecticut River

Station Name: CONNECTICUT RIVER AT OLD LYME, CT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 20 feet / 6 meters

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 (8.0 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 (27.0 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

52°F
Overcast
Conditions: Overcast
Humidity: 71%
Feels Like: 47.8°F
Wind: NE 12.3 mph
Wind Gusts: 16.4 mph
Pressure: 30.12 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0.2

Five Day Weather Forecast

Overcast
Wed
H: 52°F
L: 42°F
Heavy rain
Thu
H: 52°F
L: 47°F
Heavy rain
Fri
H: 57°F
L: 46°F
Partly Cloudy
Sat
H: 55°F
L: 43°F
Sunny
Sun
H: 52°F
L: 39°F

Air Quality

AQI: 1 - Good
PM2.5: 5.25 μg/m3
PM10: 6.95 μg/m3
Carbon Monoxide: 197.85 μg/m3
Nitrogen Dioxide: 7.65 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:33 AM
Sunset: 5:48 PM
Daylight: 10 hrs 30 mins
Moonrise: 2:22 PM
Moon Transit: 7:08 PM
Moonset: 12:04 PM
Moon Phase: First Quarter
Moon Illumination: 52.5%

Best Times for Fishing or Hunting

Major Periods

8:40 AM - 11:10 AM
6:38 PM - 9:08 PM

Minor Periods

12:00 AM - 12:00 AM
1:52 PM - 3:22 PM

Action Rating: 2 out of 5

Wednesday, October 29, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 47.2°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 16.6 mph
UV Index: 0.5

Air Quality

AQI: 1 - Good
PM2.5: 4.67 μg/m3
PM10: 6.32 μg/m3
Carbon Monoxide: 160.29 μg/m3
Nitrogen Dioxide: 5.51 μg/m3
Sulphur Dioxide: 1.62 μg/m3
Ozone: 62 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:33 AM
Sunset: 5:48 PM
Daylight: 10 hrs 30 mins
Moonrise: 2:22 PM
Moon Transit: 7:08 PM
Moonset: 12:04 PM
Moon Phase: First Quarter
Moon Illumination: 52.5%

Best Times for Fishing or Hunting

Major Periods

8:40 AM - 11:10 AM
6:38 PM - 9:08 PM

Minor Periods

12:00 AM - 12:00 AM
1:52 PM - 3:22 PM

Action Rating: 2 out of 5

Thursday, October 30, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 50°F
Average Humidity: 91%
Chance of Rain: 89%
Wind: 25.3 mph
UV Index: 0.4

Air Quality

AQI: 1 - Good
PM2.5: 6.13 μg/m3
PM10: 8.59 μg/m3
Carbon Monoxide: 168.61 μg/m3
Nitrogen Dioxide: 5.13 μg/m3
Sulphur Dioxide: 1.51 μg/m3
Ozone: 71.36 μg/m3

Astronomical

Sunrise: 7:19 AM
Sun Transit: 12:33 AM
Sunset: 5:47 PM
Daylight: 10 hrs 28 mins
Moonrise: 2:50 PM
Moon Transit: 7:57 PM
Moonset: 12:04 AM
Moon Phase: First Quarter
Moon Illumination: 63.7%

Best Times for Fishing or Hunting

Major Periods

9:30 AM - 12:00 AM
7:27 PM - 9:57 PM

Minor Periods

2:20 PM - 3:50 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, October 31, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 52.7°F
Average Humidity: 82%
Chance of Rain: 84%
Wind: 27.1 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 4.05 μg/m3
PM10: 4.81 μg/m3
Carbon Monoxide: 165.17 μg/m3
Nitrogen Dioxide: 6.52 μg/m3
Sulphur Dioxide: 2.86 μg/m3
Ozone: 67.92 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 12:33 AM
Sunset: 5:45 PM
Daylight: 10 hrs 26 mins
Moonrise: 3:14 PM
Moon Transit: 8:44 PM
Moonset: 1:14 AM
Moon Phase: First Quarter
Moon Illumination: 74.1%

Best Times for Fishing or Hunting

Major Periods

10:16 AM - 12:46 AM
8:14 PM - 10:44 PM

Minor Periods

2:44 PM - 4:14 PM
12:44 AM - 2:14 AM

Action Rating: 2 out of 5

Saturday, November 1, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 49.1°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 27.1 mph
UV Index: 0.6

Air Quality

AQI: 1 - Good
PM2.5: 2.23 μg/m3
PM10: 2.26 μg/m3
Carbon Monoxide: 151.45 μg/m3
Nitrogen Dioxide: 4.02 μg/m3
Sulphur Dioxide: 1.58 μg/m3
Ozone: 73.16 μg/m3

Astronomical

Sunrise: 7:21 AM
Sun Transit: 12:32 AM
Sunset: 5:44 PM
Daylight: 10 hrs 23 mins
Moonrise: 3:37 PM
Moon Transit: 9:31 PM
Moonset: 2:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 83.4%

Best Times for Fishing or Hunting

Major Periods

11:03 AM - 1:33 PM
9:01 PM - 11:31 PM

Minor Periods

3:07 PM - 4:37 PM
1:56 AM - 3:26 AM

Action Rating: 2 out of 5

Sunday, November 2, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 43.5°F
Average Humidity: 63%
Chance of Rain: 0%
Wind: 13 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 3.16 μg/m3
PM10: 3.18 μg/m3
Carbon Monoxide: 178.54 μg/m3
Nitrogen Dioxide: 6.56 μg/m3
Sulphur Dioxide: 1.83 μg/m3
Ozone: 57.38 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 12:32 AM
Sunset: 5:43 PM
Daylight: 10 hrs 21 mins
Moonrise: 4:00 PM
Moon Transit: 12:31 AM
Moonset: 3:38 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.9%

Best Times for Fishing or Hunting

Major Periods

12:01 AM - 2:31 PM
12:01 AM - 2:31 PM

Minor Periods

3:30 PM - 5:00 PM
3:08 AM - 4:38 AM

Action Rating: 2 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.

Webcams Near Old Lyme, CT

Sponsored Content