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

39°F
Overcast
Overcast
31.3°F
36.6°F
76%
NNE 12.8 mph
18.3 mph
28.9°F
35.3°F
0 in
100%
9 mi
1029 mbar
1

Five Day Weather Forecast

Moderate rain
Fri
H: 37°F
L: 35°F
Patchy rain nearby
Sat
H: 40°F
L: 34°F
Overcast
Sun
H: 49°F
L: 33°F
Freezing fog
Mon
H: 40°F
L: 26°F
Cloudy
Tue
H: 53°F
L: 39°F

Air Quality

AQI: 1 - Good
PM2.5: 5.25 μg/m3
PM10: 6.55 μg/m3
Carbon Monoxide: 214.85 μg/m3
Nitrogen Dioxide: 9.05 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 12:00 AM
Sunset: 5:44 PM
Daylight: 11 hrs 30 mins
Moonrise: 9:26 PM
Moon Transit: 1:56 AM
Moonset: 7:23 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.6%

Best Times for Fishing or Hunting

Major Periods

1:26 AM - 3:56 AM
4:17 PM - 6:47 PM

Minor Periods

8:56 PM - 10:26 PM
6:53 AM - 8:23 AM

Action Rating: 2 out of 5

Special Weather Statement issued March 6 at 12:28PM EST by NWS Boston/Norton MA

Effective: Fri March 6, 2026, 12:28 PM
Expires: Sat March 7, 2026, 1:00 AM

Spotty freezing drizzle is possible through tonight north of the Mass Pike and in the higher elevations. Be alert for icy spots on untreated roads. Across the rest of southern New England, including areas near the coast, temperatures will fall to around freezing later tonight into early Saturday morning. Leftover moisture may produce icy spots on untreated roads in these areas as well. Plan on allowing extra travel time and be especially careful on bridges and overpasses. Temperatures will warm above freezing Saturday morning.


Friday, March 6, 2026

Weather Forecast

Moderate rain
37.4°F
35.2°F
36.4°F
94%
0.74 in
88%
0%
18.1 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 3.95 μg/m3
PM10: 4.82 μg/m3
Carbon Monoxide: 193.81 μg/m3
Nitrogen Dioxide: 6.93 μg/m3
Sulphur Dioxide: 1.47 μg/m3
Ozone: 83.8 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 12:00 AM
Sunset: 5:44 PM
Daylight: 11 hrs 30 mins
Moonrise: 9:26 PM
Moon Transit: 1:56 AM
Moonset: 7:23 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.6%

Best Times for Fishing or Hunting

Major Periods

1:26 AM - 3:56 AM
4:17 PM - 6:47 PM

Minor Periods

8:56 PM - 10:26 PM
6:53 AM - 8:23 AM

Action Rating: 2 out of 5

Saturday, March 7, 2026

Weather Forecast

Patchy rain nearby
39.6°F
34.3°F
37.4°F
97%
0.01 in
83%
0%
12.1 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 7.98 μg/m3
PM10: 10.9 μg/m3
Carbon Monoxide: 190.61 μg/m3
Nitrogen Dioxide: 7.21 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 75.72 μg/m3

Astronomical

Sunrise: 6:13 AM
Sun Transit: 11:58 AM
Sunset: 5:45 PM
Daylight: 11 hrs 33 mins
Moonrise: 10:32 PM
Moon Transit: 2:40 AM
Moonset: 7:46 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.2%

Best Times for Fishing or Hunting

Major Periods

2:10 AM - 4:40 AM
5:01 PM - 7:31 PM

Minor Periods

10:02 PM - 11:32 PM
7:16 AM - 8:46 AM

Action Rating: 2 out of 5

Sunday, March 8, 2026

Weather Forecast

Overcast
48.9°F
32.8°F
42.9°F
98%
0 in
0%
0%
14.3 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 10.35 μg/m3
PM10: 11.26 μg/m3
Carbon Monoxide: 184.65 μg/m3
Nitrogen Dioxide: 12.67 μg/m3
Sulphur Dioxide: 2.13 μg/m3
Ozone: 52.6 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 11:58 AM
Sunset: 5:47 PM
Daylight: 11 hrs 35 mins
Moonrise: 11:36 PM
Moon Transit: 3:25 AM
Moonset: 8:12 AM
Moon Phase: Waning Gibbous
Moon Illumination: 69.3%

Best Times for Fishing or Hunting

Major Periods

2:55 AM - 5:25 AM
5:47 PM - 8:17 PM

Minor Periods

12:00 AM - 12:00 AM
7:42 AM - 9:12 AM

Action Rating: 3 out of 5

Monday, March 9, 2026

Weather Forecast

Freezing fog
39.6°F
26.1°F
33°F
97%
0 in
0%
0%
9.4 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 12.59 μg/m3
PM10: 13.52 μg/m3
Carbon Monoxide: 260.03 μg/m3
Nitrogen Dioxide: 23.66 μg/m3
Sulphur Dioxide: 3.74 μg/m3
Ozone: 49.96 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 11:58 AM
Sunset: 5:48 PM
Daylight: 11 hrs 38 mins
Moonrise: 12:36 AM
Moon Transit: 4:12 AM
Moonset: 8:44 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%

Best Times for Fishing or Hunting

Major Periods

3:42 AM - 6:12 AM
6:35 PM - 9:05 PM

Minor Periods

8:14 AM - 9:44 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, March 10, 2026

Weather Forecast

Cloudy
53.2°F
39.1°F
45°F
93%
0 in
0%
0%
9.4 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 8.46 μg/m3
PM10: 9.4 μg/m3
Carbon Monoxide: 177.08 μg/m3
Nitrogen Dioxide: 6.62 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 72.17 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 11:58 AM
Sunset: 5:49 PM
Daylight: 11 hrs 41 mins
Moonrise: 12:39 AM
Moon Transit: 5:01 AM
Moonset: 9:21 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%

Best Times for Fishing or Hunting

Major Periods

4:31 AM - 7:01 AM
7:26 PM - 9:56 PM

Minor Periods

8:51 AM - 10:21 AM
12:09 AM - 1:39 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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