Water Temperature of the Connecticut River in Old Lyme, CT

Current Water Temperature

75.7°F

Measurement Time: Sunday, June 14, 2026, 3:45 AM 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
76.2°F
78°F
76%
S 4.7 mph
9 mph
76.5°F
58.3°F
0 in
0%
9 mi
1012 mbar
1.6

Five Day Weather Forecast

Patchy rain nearby
Sun
H: 93°F
L: 65°F
Patchy rain nearby
Mon
H: 75°F
L: 61°F
Sunny
Tue
H: 72°F
L: 57°F
Patchy rain nearby
Wed
H: 74°F
L: 61°F
Patchy rain nearby
Thu
H: 79°F
L: 64°F

Air Quality

AQI: 1 - Good
PM2.5: 10 μg/m3
PM10: 11.1 μg/m3
Carbon Monoxide: 176 μg/m3
Nitrogen Dioxide: 13.2 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 52 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 12:49 AM
Sunset: 8:24 PM
Daylight: 15 hrs 9 mins
Moonrise: 4:12 AM
Moon Transit: 12:20 AM
Moonset: 8:33 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

1:44 AM - 4:14 AM
11:50 AM - 2:20 PM

Minor Periods

8:03 PM - 9:33 PM
3:42 AM - 5:12 AM

Action Rating: 5 out of 5

Coastal Flood Statement issued June 13 at 2:00PM EDT until June 16 at 2:00AM EDT by NWS Boston/Norton MA

Effective: Sat June 13, 2026, 2:00 PM
Expires: Sun June 14, 2026, 8:00 AM

* WHAT...Up to one half foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (4.4 to 7.2 feet Mean Lower Low Water) around the evening high tides. * WHERE...Washington, Southern Bristol MA, Southern Plymouth MA, Southeast Providence RI, Eastern Kent RI, Bristol RI, and Newport RI Counties. * WHEN...From 6 PM EDT this evening through late Monday night. The evening high tide periods tonight, Sunday night and Monday night are of the greatest concern. * IMPACTS...Minor coastal flooding occurs along the most vulnerable shoreline locales in Newport, Portsmouth and Middletown. This includes flooding at parking lots near beaches in Newport, and a portion of Hazard Road. Minor coastal flooding also occurs on several streets in the Common Fence Point area.

Do not drive through flooded roadways.


Rip Current Statement issued June 13 at 3:33PM EDT until June 14 at 9:00PM EDT by NWS Upton NY

Effective: Sat June 13, 2026, 3:33 PM
Expires: Sun June 14, 2026, 6:00 AM

* WHERE...Southeast Suffolk County. * WHEN...For the High Rip Current Risk, from Sunday morning through Sunday evening. For the Coastal Flood Statement, Sunday evening. * IMPACTS...Brief minor flooding of the more vulnerable locations near the waterfront and shoreline. Life- threatening rip currents are likely for all people entering the surf zone. Anyone visiting the beaches should stay out of the surf. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Additional minor coastal flooding is possible Monday night.

Do not drive through flooded roadways. If you enter the surf zone, always have a flotation device with you and swim near a lifeguard. If caught in a rip current, relax and float, and do not swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and yell or wave for help.


Rip Current Statement issued June 13 at 3:33PM EDT until June 14 at 9:00PM EDT by NWS Upton NY

Effective: Sat June 13, 2026, 3:33 PM
Expires: Sun June 14, 2026, 6:00 AM

* WHAT...Dangerous rip currents expected. * WHERE...Kings (Brooklyn) and Southwest Suffolk Counties. * WHEN...From Sunday morning through Sunday evening. * IMPACTS...Life-threatening rip currents are likely for all people entering the surf zone. Anyone visiting the beaches should stay out of the surf. Rip currents can sweep even the best swimmers away from shore into deeper water.

If you enter the surf zone, always have a flotation device with you and swim near a lifeguard. If caught in a rip current, relax and float, and do not swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and yell or wave for help.


Coastal Flood Statement issued June 13 at 3:33PM EDT until June 14 at 11:00PM EDT by NWS Upton NY

Effective: Sat June 13, 2026, 3:33 PM
Expires: Sun June 14, 2026, 6:00 AM

* WHERE...Southeast Suffolk County. * WHEN...For the High Rip Current Risk, from Sunday morning through Sunday evening. For the Coastal Flood Statement, Sunday evening. * IMPACTS...Brief minor flooding of the more vulnerable locations near the waterfront and shoreline. Life- threatening rip currents are likely for all people entering the surf zone. Anyone visiting the beaches should stay out of the surf. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Additional minor coastal flooding is possible Monday night.

Do not drive through flooded roadways. If you enter the surf zone, always have a flotation device with you and swim near a lifeguard. If caught in a rip current, relax and float, and do not swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and yell or wave for help.


Sunday, June 14, 2026

Weather Forecast

Patchy rain nearby
93.2°F
65.3°F
76.1°F
60%
0.02 in
36%
0%
19.2 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 11.13 μg/m3
PM10: 14.18 μg/m3
Carbon Monoxide: 148 μg/m3
Nitrogen Dioxide: 7.47 μg/m3
Sulphur Dioxide: 0.72 μg/m3
Ozone: 91.46 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 12:49 AM
Sunset: 8:24 PM
Daylight: 15 hrs 9 mins
Moonrise: 4:12 AM
Moon Transit: 12:20 AM
Moonset: 8:33 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

1:44 AM - 4:14 AM
11:50 AM - 2:20 PM

Minor Periods

8:03 PM - 9:33 PM
3:42 AM - 5:12 AM

Action Rating: 5 out of 5

Monday, June 15, 2026

Weather Forecast

Patchy rain nearby
74.6°F
60.6°F
67.6°F
64%
0.01 in
17%
0%
13.9 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 3.36 μg/m3
PM10: 4.08 μg/m3
Carbon Monoxide: 118.13 μg/m3
Nitrogen Dioxide: 2.1 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 85.63 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 12:49 AM
Sunset: 8:25 PM
Daylight: 15 hrs 9 mins
Moonrise: 5:15 AM
Moon Transit: 1:28 PM
Moonset: 9:36 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

2:52 AM - 5:22 AM
12:58 AM - 3:28 PM

Minor Periods

9:06 PM - 10:36 PM
4:45 AM - 6:15 AM

Action Rating: 4 out of 5

Tuesday, June 16, 2026

Weather Forecast

Sunny
72.1°F
56.9°F
64.6°F
60%
0 in
4%
0%
13.6 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 3.84 μg/m3
PM10: 5.02 μg/m3
Carbon Monoxide: 123.38 μg/m3
Nitrogen Dioxide: 3.15 μg/m3
Sulphur Dioxide: 0.36 μg/m3
Ozone: 68.25 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 12:50 AM
Sunset: 8:25 PM
Daylight: 15 hrs 10 mins
Moonrise: 6:31 AM
Moon Transit: 2:33 PM
Moonset: 10:27 PM
Moon Phase: New
Moon Illumination: 1.0%

Best Times for Fishing or Hunting

Major Periods

3:59 AM - 6:29 AM
2:03 PM - 4:33 PM

Minor Periods

9:57 PM - 11:27 PM
6:01 AM - 7:31 AM

Action Rating: 3 out of 5

Wednesday, June 17, 2026

Weather Forecast

Patchy rain nearby
73.8°F
61.4°F
67.1°F
81%
0.07 in
60%
0%
14.5 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 10.34 μg/m3
PM10: 15.34 μg/m3
Carbon Monoxide: 121.65 μg/m3
Nitrogen Dioxide: 3.61 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 84.25 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:50 AM
Sunset: 8:25 PM
Daylight: 15 hrs 10 mins
Moonrise: 7:50 AM
Moon Transit: 3:34 PM
Moonset: 11:05 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

5:02 AM - 7:32 AM
3:04 PM - 5:34 PM

Minor Periods

12:00 AM - 12:00 AM
7:20 AM - 8:50 AM

Action Rating: 3 out of 5

Thursday, June 18, 2026

Weather Forecast

Patchy rain nearby
78.5°F
63.7°F
68.1°F
90%
0.04 in
68%
0%
19.5 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 11.27 μg/m3
PM10: 17.42 μg/m3
Carbon Monoxide: 130.89 μg/m3
Nitrogen Dioxide: 3.63 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 82.44 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:50 AM
Sunset: 8:26 PM
Daylight: 15 hrs 10 mins
Moonrise: 9:10 AM
Moon Transit: 4:29 PM
Moonset: 12:05 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%

Best Times for Fishing or Hunting

Major Periods

5:59 AM - 8:29 AM
3:59 PM - 6:29 PM

Minor Periods

8:40 AM - 10:10 AM
12:00 AM - 12:00 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.

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