Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

32.0°F

Measurement Time: Tuesday, February 17, 2026, 12:45 AM EST

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

30.4°F
Cloudy
Cloudy
24.1°F
25.1°F
100%
SW 6.3 mph
10.8 mph
23.3°F
17.9°F
0 in
0%
9 mi
1021 mbar
0

Five Day Weather Forecast

Overcast
Tue
H: 43°F
L: 23°F
Moderate rain
Wed
H: 35°F
L: 32°F
Patchy rain nearby
Thu
H: 39°F
L: 31°F
Patchy rain nearby
Fri
H: 36°F
L: 28°F
Patchy rain nearby
Sat
H: 41°F
L: 31°F

Air Quality

AQI: 1 - Good
PM2.5: 18.65 μg/m3
PM10: 22.65 μg/m3
Carbon Monoxide: 271.85 μg/m3
Nitrogen Dioxide: 44.05 μg/m3
Sulphur Dioxide: 4.55 μg/m3
Ozone: 37 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 12:03 AM
Sunset: 5:26 PM
Daylight: 10 hrs 44 mins
Moonrise: 6:51 AM
Moon Transit: 12:14 AM
Moonset: 5:48 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:46 AM - 4:16 AM
11:44 AM - 2:14 PM

Minor Periods

5:18 PM - 6:48 PM
6:21 AM - 7:51 AM

Action Rating: 5 out of 5

Special Weather Statement issued February 16 at 2:50PM EST by NWS Upton NY

Effective: Mon February 16, 2026, 2:50 PM
Expires: Tue February 17, 2026, 7:00 AM

Spotty light snow and freezing drizzle may develop ahead of an approaching warm front late tonight into Tuesday morning. Travelers are advised to check the latest forecast and road conditions before heading out late tonight into Tuesday morning. Use caution and be prepared for potentially icy sidewalks, roads, overpasses and bridges during the early Tuesday morning commute.


Special Weather Statement issued February 16 at 3:32PM EST by NWS Boston/Norton MA

Effective: Mon February 16, 2026, 3:32 PM
Expires: Tue February 17, 2026, 2:00 AM

A weak storm system passing to our north on Tuesday will bring with it a risk for patchy light freezing drizzle or flurries during the Tuesday pre-dawn hours into the rest of Tuesday morning. The anticipated spotty coverage of freezing drizzle should minimize impacts, although unpaved roads, sidewalks and elevated bridges could still become slippery. Use caution if traveling Tuesday morning.


Special Weather Statement issued February 16 at 2:50PM EST by NWS Upton NY

Effective: Mon February 16, 2026, 2:50 PM
Expires: Tue February 17, 2026, 7:00 AM

Spotty freezing drizzle may develop ahead of an approaching warm front late tonight into Tuesday morning. Travelers are advised to check the latest forecast and road conditions before heading out late tonight into Tuesday morning. Use caution and be prepared for potentially icy sidewalks, roads, overpasses and bridges during the early Tuesday morning commute.


Tuesday, February 17, 2026

Weather Forecast

Overcast
42.8°F
22.8°F
32°F
84%
0 in
0%
3%
11.4 mph
0.2


Air Quality

AQI: 2 - Moderate
PM2.5: 16.47 μg/m3
PM10: 19.7 μg/m3
Carbon Monoxide: 288.93 μg/m3
Nitrogen Dioxide: 33.28 μg/m3
Sulphur Dioxide: 3.34 μg/m3
Ozone: 43.88 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 12:03 AM
Sunset: 5:26 PM
Daylight: 10 hrs 44 mins
Moonrise: 6:51 AM
Moon Transit: 12:14 AM
Moonset: 5:48 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:46 AM - 4:16 AM
11:44 AM - 2:14 PM

Minor Periods

5:18 PM - 6:48 PM
6:21 AM - 7:51 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Moderate rain
34.7°F
32.4°F
33.8°F
98%
0.5 in
86%
3%
8.1 mph
0.2


Air Quality

AQI: 2 - Moderate
PM2.5: 18.25 μg/m3
PM10: 20.17 μg/m3
Carbon Monoxide: 445.93 μg/m3
Nitrogen Dioxide: 65.52 μg/m3
Sulphur Dioxide: 6.07 μg/m3
Ozone: 14.48 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:03 AM
Sunset: 5:27 PM
Daylight: 10 hrs 47 mins
Moonrise: 7:14 AM
Moon Transit: 12:00 AM
Moonset: 6:58 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:33 AM - 5:03 AM

Minor Periods

6:28 PM - 7:58 PM
6:44 AM - 8:14 AM

Action Rating: 4 out of 5

Thursday, February 19, 2026

Weather Forecast

Patchy rain nearby
39.2°F
30.9°F
34.4°F
83%
0.08 in
84%
10%
8.5 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 8.18 μg/m3
PM10: 8.94 μg/m3
Carbon Monoxide: 308.53 μg/m3
Nitrogen Dioxide: 23.86 μg/m3
Sulphur Dioxide: 2.42 μg/m3
Ozone: 48.48 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 12:03 AM
Sunset: 5:28 PM
Daylight: 10 hrs 49 mins
Moonrise: 7:35 AM
Moon Transit: 4:07 PM
Moonset: 8:08 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

3:18 AM - 5:48 AM
3:37 PM - 6:07 PM

Minor Periods

7:38 PM - 9:08 PM
7:05 AM - 8:35 AM

Action Rating: 3 out of 5

Friday, February 20, 2026

Weather Forecast

Patchy rain nearby
36.2°F
27.5°F
32.1°F
95%
0.28 in
86%
21%
11 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 5.83 μg/m3
PM10: 7.19 μg/m3
Carbon Monoxide: 265.84 μg/m3
Nitrogen Dioxide: 9.37 μg/m3
Sulphur Dioxide: 1.92 μg/m3
Ozone: 70.48 μg/m3

Astronomical

Sunrise: 6:37 AM
Sun Transit: 12:03 AM
Sunset: 5:29 PM
Daylight: 10 hrs 52 mins
Moonrise: 7:58 AM
Moon Transit: 2:32 PM
Moonset: 9:20 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:02 PM - 4:32 PM

Minor Periods

8:50 PM - 10:20 PM
7:28 AM - 8:58 AM

Action Rating: 2 out of 5

Saturday, February 21, 2026

Weather Forecast

Patchy rain nearby
40.5°F
31°F
34.2°F
91%
0.04 in
80%
25%
14.5 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.39 μg/m3
PM10: 2.9 μg/m3
Carbon Monoxide: 182.86 μg/m3
Nitrogen Dioxide: 3.47 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 86.23 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 12:02 AM
Sunset: 5:31 PM
Daylight: 10 hrs 54 mins
Moonrise: 8:22 AM
Moon Transit: 3:21 PM
Moonset: 10:35 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.4%

Best Times for Fishing or Hunting

Major Periods

4:52 AM - 7:22 AM
2:51 PM - 5:21 PM

Minor Periods

10:05 PM - 11:35 PM
7:52 AM - 9:22 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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