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

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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

78.1°F
Sunny
Sunny
80.7°F
86.9°F
54%
SW 6 mph
8.1 mph
81.8°F
71.5°F
0 in
0%
9 mi
1012 mbar
7

Five Day Weather Forecast

Sunny
Thu
H: 87°F
L: 57°F
Heavy rain
Fri
H: 75°F
L: 52°F
Overcast
Sat
H: 58°F
L: 48°F
Moderate rain
Sun
H: 51°F
L: 40°F
Partly Cloudy
Mon
H: 48°F
L: 34°F

Air Quality

AQI: 1 - Good
PM2.5: 15.85 μg/m3
PM10: 16.75 μg/m3
Carbon Monoxide: 183.85 μg/m3
Nitrogen Dioxide: 7.25 μg/m3
Sulphur Dioxide: 5.85 μg/m3
Ozone: 131 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 12:47 AM
Sunset: 7:29 PM
Daylight: 13 hrs 22 mins
Moonrise: 5:22 AM
Moon Transit: 12:00 AM
Moonset: 6:53 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

1:35 AM - 4:05 AM
11:30 AM - 2:00 PM

Minor Periods

6:23 PM - 7:53 PM
4:52 AM - 6:22 AM

Action Rating: 5 out of 5

Thursday, April 16, 2026

Weather Forecast

Sunny
87.1°F
56.8°F
70.3°F
70%
0 in
0%
0%
9.6 mph
1.7


Air Quality

AQI: 2 - Moderate
PM2.5: 19.91 μg/m3
PM10: 21.03 μg/m3
Carbon Monoxide: 200.57 μg/m3
Nitrogen Dioxide: 11.87 μg/m3
Sulphur Dioxide: 5.02 μg/m3
Ozone: 97.04 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 12:47 AM
Sunset: 7:29 PM
Daylight: 13 hrs 22 mins
Moonrise: 5:22 AM
Moon Transit: 12:00 AM
Moonset: 6:53 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

1:35 AM - 4:05 AM
11:30 AM - 2:00 PM

Minor Periods

6:23 PM - 7:53 PM
4:52 AM - 6:22 AM

Action Rating: 5 out of 5

Friday, April 17, 2026

Weather Forecast

Heavy rain
74.5°F
52.2°F
61°F
84%
1.09 in
83%
0%
11.2 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 11.4 μg/m3
PM10: 12.59 μg/m3
Carbon Monoxide: 191.81 μg/m3
Nitrogen Dioxide: 12.06 μg/m3
Sulphur Dioxide: 3.16 μg/m3
Ozone: 95.72 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 12:47 AM
Sunset: 7:30 PM
Daylight: 13 hrs 25 mins
Moonrise: 5:48 AM
Moon Transit: 12:52 AM
Moonset: 8:11 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

2:25 AM - 4:55 AM
12:22 AM - 2:52 PM

Minor Periods

7:41 PM - 9:11 PM
5:18 AM - 6:48 AM

Action Rating: 4 out of 5

Saturday, April 18, 2026

Weather Forecast

Overcast
57.6°F
48.2°F
53.8°F
84%
0 in
0%
0%
10.5 mph
1.8


Air Quality

AQI: 1 - Good
PM2.5: 8.21 μg/m3
PM10: 8.51 μg/m3
Carbon Monoxide: 193.37 μg/m3
Nitrogen Dioxide: 9.61 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 79.88 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 12:47 AM
Sunset: 7:31 PM
Daylight: 13 hrs 28 mins
Moonrise: 6:19 AM
Moon Transit: 1:48 PM
Moonset: 9:32 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

3:19 AM - 5:49 AM
1:18 PM - 3:48 PM

Minor Periods

9:02 PM - 10:32 PM
5:49 AM - 7:19 AM

Action Rating: 5 out of 5

Sunday, April 19, 2026

Weather Forecast

Moderate rain
50.7°F
39.6°F
46.1°F
90%
0.6 in
89%
0%
15 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 6.93 μg/m3
PM10: 8.19 μg/m3
Carbon Monoxide: 157.89 μg/m3
Nitrogen Dioxide: 5.61 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 84.4 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

Partly Cloudy
47.8°F
34.4°F
40.5°F
57%
0 in
0%
0%
13.4 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 3.74 μg/m3
PM10: 3.92 μg/m3
Carbon Monoxide: 180.99 μg/m3
Nitrogen Dioxide: 5.6 μg/m3
Sulphur Dioxide: 2.1 μg/m3
Ozone: 77.15 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

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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