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

33.1°F
Overcast
Overcast
25.7°F
31.1°F
85%
SW 8.7 mph
12.5 mph
25.1°F
26.9°F
0 in
100%
9 mi
1022 mbar
0.3

Five Day Weather Forecast

Light freezing rain
Tue
H: 40°F
L: 27°F
Moderate rain
Wed
H: 36°F
L: 33°F
Patchy rain nearby
Thu
H: 38°F
L: 31°F
Moderate or heavy snow showers
Fri
H: 37°F
L: 30°F
Patchy rain nearby
Sat
H: 41°F
L: 31°F

Air Quality

AQI: 1 - Good
PM2.5: 13.55 μg/m3
PM10: 17.55 μg/m3
Carbon Monoxide: 230.85 μg/m3
Nitrogen Dioxide: 17.05 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 63 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:01 AM
Sunset: 5:24 PM
Daylight: 10 hrs 44 mins
Moonrise: 6:50 AM
Moon Transit: 12:12 AM
Moonset: 5:46 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:48 AM - 4:18 AM
11:42 AM - 2:12 PM

Minor Periods

5:16 PM - 6:46 PM
6:20 AM - 7:50 AM

Action Rating: 5 out of 5

Special Weather Statement issued February 16 at 2:50PM EST by NWS Upton NY

Effective: Mon February 16, 2026, 2:50 PM
Expires: Tue February 17, 2026, 7:00 AM

Spotty light snow and freezing drizzle may develop ahead of an approaching warm front late tonight into Tuesday morning. Travelers are advised to check the latest forecast and road conditions before heading out late tonight into Tuesday morning. Use caution and be prepared for potentially icy sidewalks, roads, overpasses and bridges during the early Tuesday morning commute.


Special Weather Statement issued February 17 at 1:47AM EST by NWS Boston/Norton MA

Effective: Tue February 17, 2026, 1:47 AM
Expires: Tue February 17, 2026, 10:00 AM

A weak storm system passing to our north today will bring a risk for patchy light freezing drizzle or flurries this morning. The anticipated spotty coverage of freezing drizzle should minimize icing on treated surfaces. Although untreated surfaces and elevated bridges could still become slippery. Use caution if traveling this morning.


Tuesday, February 17, 2026

Weather Forecast

Light freezing rain
39.9°F
27°F
33.2°F
87%
0.01 in
72%
0%
11 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 12.2 μg/m3
PM10: 15.33 μg/m3
Carbon Monoxide: 278.89 μg/m3
Nitrogen Dioxide: 15.39 μg/m3
Sulphur Dioxide: 2.41 μg/m3
Ozone: 63.84 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:01 AM
Sunset: 5:24 PM
Daylight: 10 hrs 44 mins
Moonrise: 6:50 AM
Moon Transit: 12:12 AM
Moonset: 5:46 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:48 AM - 4:18 AM
11:42 AM - 2:12 PM

Minor Periods

5:16 PM - 6:46 PM
6:20 AM - 7:50 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Moderate rain
35.6°F
33.1°F
34.2°F
98%
0.48 in
89%
3%
9.4 mph
0.2


Air Quality

AQI: 2 - Moderate
PM2.5: 21.11 μg/m3
PM10: 23.25 μg/m3
Carbon Monoxide: 384.25 μg/m3
Nitrogen Dioxide: 53.51 μg/m3
Sulphur Dioxide: 4.91 μg/m3
Ozone: 23 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 12:01 AM
Sunset: 5:25 PM
Daylight: 10 hrs 46 mins
Moonrise: 7:12 AM
Moon Transit: 12:58 AM
Moonset: 6:56 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

2:34 AM - 5:04 AM
12:28 AM - 2:58 PM

Minor Periods

6:26 PM - 7:56 PM
6:42 AM - 8:12 AM

Action Rating: 4 out of 5

Thursday, February 19, 2026

Weather Forecast

Patchy rain nearby
37.8°F
30.7°F
33.9°F
82%
0.09 in
77%
5%
10.1 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 6.67 μg/m3
PM10: 7.62 μg/m3
Carbon Monoxide: 309.77 μg/m3
Nitrogen Dioxide: 16.9 μg/m3
Sulphur Dioxide: 2.11 μg/m3
Ozone: 57.96 μg/m3

Astronomical

Sunrise: 6:37 AM
Sun Transit: 12:01 AM
Sunset: 5:27 PM
Daylight: 10 hrs 49 mins
Moonrise: 7:34 AM
Moon Transit: 4:07 PM
Moonset: 8:07 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

3:20 AM - 5:50 AM
3:37 PM - 6:07 PM

Minor Periods

7:37 PM - 9:07 PM
7:04 AM - 8:34 AM

Action Rating: 3 out of 5

Friday, February 20, 2026

Weather Forecast

Moderate or heavy snow showers
36.5°F
29.7°F
33°F
94%
0.33 in
83%
20%
11.2 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 5.29 μg/m3
PM10: 6.85 μg/m3
Carbon Monoxide: 265.56 μg/m3
Nitrogen Dioxide: 7.15 μg/m3
Sulphur Dioxide: 1.79 μg/m3
Ozone: 74.56 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 12:01 AM
Sunset: 5:28 PM
Daylight: 10 hrs 52 mins
Moonrise: 7:56 AM
Moon Transit: 2:30 PM
Moonset: 9:19 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:00 PM - 4:30 PM

Minor Periods

8:49 PM - 10:19 PM
7:26 AM - 8:56 AM

Action Rating: 2 out of 5

Saturday, February 21, 2026

Weather Forecast

Patchy rain nearby
41.3°F
31.4°F
34.7°F
90%
0.03 in
77%
21%
15.9 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.44 μg/m3
PM10: 3 μg/m3
Carbon Monoxide: 180.07 μg/m3
Nitrogen Dioxide: 3.23 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 85.92 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:01 AM
Sunset: 5:29 PM
Daylight: 10 hrs 54 mins
Moonrise: 8:20 AM
Moon Transit: 3:19 PM
Moonset: 10:33 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.4%

Best Times for Fishing or Hunting

Major Periods

4:53 AM - 7:23 AM
2:49 PM - 5:19 PM

Minor Periods

10:03 PM - 11:33 PM
7:50 AM - 9:20 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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