Water Temperature of the Mystic River in Mystic, CT

Current Water Temperature

49.3°F

Measurement Time: Monday, April 10, 2023, 5:24 AM EDT

Temperature Locations

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Local Points of Interest

Mystic Seaport

Mystic River

Station Name: MYSTIC RIVER AT MYSTIC SEAPORT NEAR MYSTIC, CT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
93 Pearl St
Mystic, CT 06355
New London County

GPS Coordinates: 41.3614722, -71.96727778

Nearby Water Temperatures

Mystic Harbor, Mystic, CT (1 mi)
Mystic River, Old Mystic, CT (1.1 mi)
Mystic River, Noank, CT (2.5 mi)
Thames River, Groton, CT (6 mi)
Thames River, New London, CT (6.7 mi)
Pawcatuck River, Westerly, RI (7.1 mi)
Yantic River, Norwich, CT (15.8 mi)
East Branch Eightmile River, Lyme, CT (19.6 mi)
Eightmile River, East Haddam, CT (19.7 mi)
Connecticut River, Old Lyme, CT (19.9 mi)
Fort Pond Bay, Montauk, NY (21.6 mi)
Orient Harbor, Orient, NY (23.5 mi)
Natchaug River, Chaplin, CT (32.2 mi)
Wilbur Hollow Brook, Clayville, RI (32.7 mi)
Hemlock Brook, Foster, RI (32.7 mi)

Weather for Mystic, Connecticut

Current Weather

30°F
Sunny
Sunny
21.8°F
28°F
58%
NW 8.9 mph
10.8 mph
21.5°F
19.2°F
0 in
0%
9 mi
1016 mbar
1.2

Five Day Weather Forecast

Sunny
Sun
H: 31°F
L: 22°F
Partly Cloudy
Mon
H: 24°F
L: 15°F
Overcast
Tue
H: 39°F
L: 27°F
Patchy rain nearby
Wed
H: 42°F
L: 35°F
Cloudy
Thu
H: 42°F
L: 34°F

Air Quality

AQI: 1 - Good
PM2.5: 3.25 μg/m3
PM10: 3.25 μg/m3
Carbon Monoxide: 221.85 μg/m3
Nitrogen Dioxide: 7.05 μg/m3
Sulphur Dioxide: 2.35 μg/m3
Ozone: 73 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

Special Weather Statement issued January 4 at 7:19AM EST by NWS Upton NY

Effective: Sun January 4, 2026, 7:19 AM
Expires: Sun January 4, 2026, 8:30 AM

Light snow or flurries will continue to track west to east across the area. A dusting to a couple of tenths of an inch of snowfall can be expected. Some slippery travel is possible. Allow some extra time if traveling this morning.


Sunday, January 4, 2026

Weather Forecast

Sunny
30.7°F
22.3°F
25.9°F
63%
0 in
0%
6%
17 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 4.21 μg/m3
PM10: 4.23 μg/m3
Carbon Monoxide: 223.17 μg/m3
Nitrogen Dioxide: 6.55 μg/m3
Sulphur Dioxide: 2.35 μg/m3
Ozone: 74.32 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
23.7°F
15.4°F
21.4°F
54%
0 in
0%
0%
15.9 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.93 μg/m3
PM10: 4.27 μg/m3
Carbon Monoxide: 203.05 μg/m3
Nitrogen Dioxide: 6.79 μg/m3
Sulphur Dioxide: 2.51 μg/m3
Ozone: 69.4 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

Overcast
39°F
26.6°F
32°F
87%
0 in
0%
0%
8.3 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 11.48 μg/m3
PM10: 13.91 μg/m3
Carbon Monoxide: 218.69 μg/m3
Nitrogen Dioxide: 11.54 μg/m3
Sulphur Dioxide: 4.24 μg/m3
Ozone: 61.24 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

Wednesday, January 7, 2026

Weather Forecast

Patchy rain nearby
41.5°F
34.9°F
38.5°F
97%
0.05 in
86%
0%
13.6 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 12.73 μg/m3
PM10: 15.14 μg/m3
Carbon Monoxide: 244.88 μg/m3
Nitrogen Dioxide: 15.29 μg/m3
Sulphur Dioxide: 3.45 μg/m3
Ozone: 49.76 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:54 AM
Sunset: 4:35 PM
Daylight: 9 hrs 21 mins
Moonrise: 9:41 PM
Moon Transit: 3:21 AM
Moonset: 9:57 AM
Moon Phase: Waning Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

2:51 AM - 5:21 AM
5:42 PM - 8:12 PM

Minor Periods

9:11 PM - 10:41 PM
9:27 AM - 10:57 AM

Action Rating: 2 out of 5

Thursday, January 8, 2026

Weather Forecast

Cloudy
42.2°F
34.2°F
37.8°F
88%
0 in
0%
0%
13.4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.32 μg/m3
PM10: 4.33 μg/m3
Carbon Monoxide: 274.99 μg/m3
Nitrogen Dioxide: 11.8 μg/m3
Sulphur Dioxide: 2.95 μg/m3
Ozone: 42.08 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:54 AM
Sunset: 4:36 PM
Daylight: 9 hrs 23 mins
Moonrise: 10:47 PM
Moon Transit: 4:05 AM
Moonset: 10:18 AM
Moon Phase: Waning Gibbous
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

3:35 AM - 6:05 AM
6:24 PM - 8:54 PM

Minor Periods

10:17 PM - 11:47 PM
9:48 AM - 11:18 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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