Water Temperature of the Mystic River in Old Mystic, CT

Current Water Temperature

54.5°F

Measurement Time: Wednesday, April 5, 2023, 10:42 AM EDT

Temperature Locations

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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

25°F
Overcast
Overcast
11.9°F
29.6°F
50%
W 16.6 mph
19 mph
21.3°F
12.9°F
0 in
100%
9 mi
1006 mbar
1.1

Five Day Weather Forecast

Sunny
Fri
H: 31°F
L: 15°F
Partly Cloudy
Sat
H: 31°F
L: 24°F
Overcast
Sun
H: 38°F
L: 27°F
Partly Cloudy
Mon
H: 29°F
L: 21°F
Patchy rain nearby
Tue
H: 40°F
L: 30°F

Air Quality

AQI: 1 - Good
PM2.5: 5.05 μg/m3
PM10: 5.15 μg/m3
Carbon Monoxide: 196.85 μg/m3
Nitrogen Dioxide: 7.95 μg/m3
Sulphur Dioxide: 3.45 μg/m3
Ozone: 78 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:52 AM
Sunset: 4:30 PM
Daylight: 9 hrs 16 mins
Moonrise: 3:27 PM
Moon Transit: 11:40 PM
Moonset: 6:48 AM
Moon Phase: Full
Moon Illumination: 99.2%

Best Times for Fishing or Hunting

Major Periods

1:07 PM - 3:37 PM
12:00 AM - 12:00 AM

Minor Periods

2:57 PM - 4:27 PM
6:18 AM - 7:48 AM

Action Rating: 4 out of 5

Friday, January 2, 2026

Weather Forecast

Sunny
30.7°F
15.4°F
23.3°F
53%
0 in
0%
0%
16.6 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.88 μg/m3
PM10: 4.04 μg/m3
Carbon Monoxide: 185.49 μg/m3
Nitrogen Dioxide: 6.59 μg/m3
Sulphur Dioxide: 3.2 μg/m3
Ozone: 75.28 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:52 AM
Sunset: 4:30 PM
Daylight: 9 hrs 16 mins
Moonrise: 3:27 PM
Moon Transit: 11:40 PM
Moonset: 6:48 AM
Moon Phase: Full
Moon Illumination: 99.2%

Best Times for Fishing or Hunting

Major Periods

1:07 PM - 3:37 PM
12:00 AM - 12:00 AM

Minor Periods

2:57 PM - 4:27 PM
6:18 AM - 7:48 AM

Action Rating: 4 out of 5

Saturday, January 3, 2026

Weather Forecast

Partly Cloudy
30.7°F
24.4°F
27.8°F
57%
0 in
0%
0%
12.8 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 3.3 μg/m3
PM10: 3.31 μg/m3
Carbon Monoxide: 196.77 μg/m3
Nitrogen Dioxide: 5.4 μg/m3
Sulphur Dioxide: 2.1 μg/m3
Ozone: 76.52 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:52 AM
Sunset: 4:31 PM
Daylight: 9 hrs 17 mins
Moonrise: 4:44 PM
Moon Transit: 12:00 AM
Moonset: 7:46 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:13 PM - 4:43 PM

Minor Periods

4:14 PM - 5:44 PM
7:16 AM - 8:46 AM

Action Rating: 6 out of 5

Sunday, January 4, 2026

Weather Forecast

Overcast
38.1°F
26.8°F
32.2°F
70%
0 in
0%
0%
13.6 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 4.3 μg/m3
PM10: 4.4 μg/m3
Carbon Monoxide: 234.37 μg/m3
Nitrogen Dioxide: 7.44 μg/m3
Sulphur Dioxide: 2.33 μg/m3
Ozone: 68.72 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:52 AM
Sunset: 4:32 PM
Daylight: 9 hrs 18 mins
Moonrise: 6:03 PM
Moon Transit: 12:43 AM
Moonset: 8:31 AM
Moon Phase: Full
Moon Illumination: 98.1%

Best Times for Fishing or Hunting

Major Periods

12:13 AM - 2:43 AM
3:13 PM - 5:43 PM

Minor Periods

5:33 PM - 7:03 PM
8:01 AM - 9:31 AM

Action Rating: 3 out of 5

Monday, January 5, 2026

Weather Forecast

Partly Cloudy
29.1°F
21.1°F
25.9°F
57%
0 in
0%
3%
17.2 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 3.47 μg/m3
PM10: 3.55 μg/m3
Carbon Monoxide: 202.43 μg/m3
Nitrogen Dioxide: 5.83 μg/m3
Sulphur Dioxide: 1.97 μg/m3
Ozone: 68.96 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:53 AM
Sunset: 4:33 PM
Daylight: 9 hrs 19 mins
Moonrise: 7:20 PM
Moon Transit: 1:41 AM
Moonset: 9:06 AM
Moon Phase: Full
Moon Illumination: 93.7%

Best Times for Fishing or Hunting

Major Periods

1:11 AM - 3:41 AM
4:07 PM - 6:37 PM

Minor Periods

6:50 PM - 8:20 PM
8:36 AM - 10:06 AM

Action Rating: 4 out of 5

Tuesday, January 6, 2026

Weather Forecast

Patchy rain nearby
40.3°F
29.6°F
34.2°F
91%
0.12 in
71%
33%
10.5 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.33 μg/m3
PM10: 5.37 μg/m3
Carbon Monoxide: 168.77 μg/m3
Nitrogen Dioxide: 4.83 μg/m3
Sulphur Dioxide: 2.13 μg/m3
Ozone: 69.69 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:53 AM
Sunset: 4:34 PM
Daylight: 9 hrs 20 mins
Moonrise: 8:33 PM
Moon Transit: 2:33 AM
Moonset: 9:33 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

2:03 AM - 4:33 AM
4:57 PM - 7:27 PM

Minor Periods

8:03 PM - 9:33 PM
9:03 AM - 10:33 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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