Water Temperature of the Mystic River in Old Mystic, CT

Current Water Temperature

54.5°F

Measurement Time: Wednesday, April 5, 2023, 10:36 AM EDT

Temperature Locations

View Nearby Locations     View All Connecticut Locations     View Locations Near Me

Mystic River

Station Name: MYSTIC RIVER US RTE I95 BRIDGE NEAR OLD MYSTIC, CT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
3 Whitehall Lndg
Old Mystic, CT 06355
New London County

GPS Coordinates: 41.37782778, -71.9631806

Nearby Water Temperatures

Mystic River, Mystic, CT (1.1 mi)
Mystic Harbor, Mystic, CT (2.2 mi)
Mystic River, Noank, CT (3.6 mi)
Thames River, Groton, CT (6.5 mi)
Pawcatuck River, Westerly, RI (6.8 mi)
Thames River, New London, CT (6.9 mi)
Yantic River, Norwich, CT (14.9 mi)
East Branch Eightmile River, Lyme, CT (19.6 mi)
Eightmile River, East Haddam, CT (19.6 mi)
Connecticut River, Old Lyme, CT (20.4 mi)
Fort Pond Bay, Montauk, NY (22.8 mi)
Orient Harbor, Orient, NY (24.4 mi)
Natchaug River, Chaplin, CT (31.2 mi)
Hemlock Brook, Foster, RI (31.6 mi)
Wilbur Hollow Brook, Clayville, RI (31.6 mi)

Weather for Old Mystic, Connecticut

Current Weather

50°F
Overcast
Overcast
46.6°F
50.9°F
96%
NNW 8.3 mph
11.4 mph
47.1°F
48.5°F
0 in
100%
9 mi
1008 mbar
0.8

Five Day Weather Forecast

Patchy rain nearby
Sun
H: 52°F
L: 39°F
Patchy rain nearby
Mon
H: 47°F
L: 33°F
Patchy rain nearby
Tue
H: 51°F
L: 29°F
Patchy rain nearby
Wed
H: 48°F
L: 41°F
Partly Cloudy
Thu
H: 62°F
L: 39°F

Air Quality

AQI: 1 - Good
PM2.5: 2.35 μg/m3
PM10: 2.55 μg/m3
Carbon Monoxide: 164.85 μg/m3
Nitrogen Dioxide: 5.25 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 102 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 12:46 AM
Sunset: 7:32 PM
Daylight: 13 hrs 30 mins
Moonrise: 6:57 AM
Moon Transit: 2:49 PM
Moonset: 10:53 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

4:18 AM - 6:48 AM
2:19 PM - 4:49 PM

Minor Periods

10:23 PM - 11:53 PM
6:27 AM - 7:57 AM

Action Rating: 3 out of 5

Freeze Watch issued April 19 at 2:19AM EDT until April 21 at 9:00AM EDT by NWS Upton NY

Effective: Sun April 19, 2026, 2:19 AM
Expires: Sun April 19, 2026, 5:00 PM

* WHAT...Sub-freezing temperatures below 32 degrees possible. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From late Monday night through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation.

Take steps now to protect tender plants from the cold.
Sunday, April 19, 2026

Weather Forecast

Patchy rain nearby
52.2°F
38.8°F
45.5°F
90%
0.15 in
83%
0%
16.1 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 5.93 μg/m3
PM10: 7.21 μg/m3
Carbon Monoxide: 180.77 μg/m3
Nitrogen Dioxide: 6 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 80.4 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 12:46 AM
Sunset: 7:32 PM
Daylight: 13 hrs 30 mins
Moonrise: 6:57 AM
Moon Transit: 2:49 PM
Moonset: 10:53 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

4:18 AM - 6:48 AM
2:19 PM - 4:49 PM

Minor Periods

10:23 PM - 11:53 PM
6:27 AM - 7:57 AM

Action Rating: 3 out of 5

Monday, April 20, 2026

Weather Forecast

Patchy rain nearby
47°F
33°F
40.1°F
70%
0.11 in
89%
0%
11.2 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 4.51 μg/m3
PM10: 4.77 μg/m3
Carbon Monoxide: 187.21 μg/m3
Nitrogen Dioxide: 6.11 μg/m3
Sulphur Dioxide: 1.99 μg/m3
Ozone: 79.96 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 12:46 AM
Sunset: 7:33 PM
Daylight: 13 hrs 33 mins
Moonrise: 7:45 AM
Moon Transit: 3:53 PM
Moonset: 12:07 PM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

5:22 AM - 7:52 AM
3:23 PM - 5:53 PM

Minor Periods

12:00 AM - 12:00 AM
7:15 AM - 8:45 AM

Action Rating: 2 out of 5

Tuesday, April 21, 2026

Weather Forecast

Patchy rain nearby
51°F
29.4°F
40.2°F
52%
0.01 in
76%
0%
10.3 mph
5.9


Air Quality

AQI: 1 - Good
PM2.5: 4.72 μg/m3
PM10: 5.25 μg/m3
Carbon Monoxide: 177.13 μg/m3
Nitrogen Dioxide: 4.36 μg/m3
Sulphur Dioxide: 1.99 μg/m3
Ozone: 88.84 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 12:46 AM
Sunset: 7:35 PM
Daylight: 13 hrs 36 mins
Moonrise: 8:46 AM
Moon Transit: 4:58 PM
Moonset: 12:07 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

6:27 AM - 8:57 AM
4:28 PM - 6:58 PM

Minor Periods

8:16 AM - 9:46 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, April 22, 2026

Weather Forecast

Patchy rain nearby
48°F
40.8°F
44.2°F
85%
0.1 in
89%
0%
12.1 mph
2.5


Air Quality

AQI: 1 - Good
PM2.5: 8.55 μg/m3
PM10: 11.13 μg/m3
Carbon Monoxide: 166.67 μg/m3
Nitrogen Dioxide: 4.79 μg/m3
Sulphur Dioxide: 2.19 μg/m3
Ozone: 97.88 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 12:46 AM
Sunset: 7:36 PM
Daylight: 13 hrs 38 mins
Moonrise: 9:56 AM
Moon Transit: 6:01 PM
Moonset: 1:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

7:31 AM - 10:01 AM
5:31 PM - 8:01 PM

Minor Periods

9:26 AM - 10:56 AM
12:39 AM - 2:09 AM

Action Rating: 3 out of 5

Thursday, April 23, 2026

Weather Forecast

Partly Cloudy
61.7°F
39°F
50.5°F
68%
0 in
0%
0%
7.4 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 14.05 μg/m3
PM10: 19.53 μg/m3
Carbon Monoxide: 167.25 μg/m3
Nitrogen Dioxide: 5.96 μg/m3
Sulphur Dioxide: 2.41 μg/m3
Ozone: 92.85 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 12:46 AM
Sunset: 7:37 PM
Daylight: 13 hrs 41 mins
Moonrise: 11:10 AM
Moon Transit: 7:00 PM
Moonset: 1:58 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

8:31 AM - 11:01 AM
6:30 PM - 9:00 PM

Minor Periods

10:40 AM - 12:10 AM
1:28 AM - 2:58 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 Mystic, CT

Sponsored Content