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

36°F
Light rain
Light rain
32.4°F
37.9°F
96%
ENE 4.3 mph
7.5 mph
35.6°F
38.3°F
0 in
100%
2 mi
1026 mbar
2

Five Day Weather Forecast

Moderate rain
Thu
H: 41°F
L: 29°F
Heavy rain
Fri
H: 36°F
L: 34°F
Mist
Sat
H: 39°F
L: 33°F
Patchy rain nearby
Sun
H: 48°F
L: 40°F
Cloudy
Mon
H: 47°F
L: 39°F

Air Quality

AQI: 2 - Moderate
PM2.5: 10.25 μg/m3
PM10: 12.85 μg/m3
Carbon Monoxide: 290.85 μg/m3
Nitrogen Dioxide: 18.65 μg/m3
Sulphur Dioxide: 2.35 μg/m3
Ozone: 44 μg/m3

Astronomical

Sunrise: 6:16 AM
Sun Transit: 12:00 AM
Sunset: 5:43 PM
Daylight: 11 hrs 27 mins
Moonrise: 8:21 PM
Moon Transit: 1:14 AM
Moonset: 7:02 AM
Moon Phase: Full
Moon Illumination: 94.0%

Best Times for Fishing or Hunting

Major Periods

12:44 AM - 3:14 AM
3:34 PM - 6:04 PM

Minor Periods

7:51 PM - 9:21 PM
6:32 AM - 8:02 AM

Action Rating: 5 out of 5

Winter Weather Advisory issued March 5 at 12:04AM EST until March 6 at 12:00PM EST by NWS Boston/Norton MA

Effective: Thu March 5, 2026, 12:04 AM
Expires: Thu March 5, 2026, 4:15 PM

* WHAT...Mixed precipitation expected. Total snow and sleet accumulations a coating to 2 inches...except 2-4 inches possible north of route 2 in far northeast Massachusetts. Ice accumulations a trace to one tenth of an inch. * WHERE...The Connecticut River Valley in Connecticut and Massachusetts, northwest Rhode Island, as well as eastern and northeast Massachusetts. * WHEN...From 5 PM Thursday to noon EST Friday. * IMPACTS...Plan on slippery road conditions. The Friday morning commute will be impacted.

Slow down and use caution while traveling.


Winter Weather Advisory issued March 5 at 12:04AM EST until March 6 at 12:00PM EST by NWS Boston/Norton MA

Effective: Thu March 5, 2026, 12:04 AM
Expires: Thu March 5, 2026, 4:15 PM

* WHAT...Mixed precipitation expected. Total snow and sleet accumulations up to 3 inches and ice accumulations around three tenths of an inch. Greatest risk for over one quarter inch of ice accretion will be in the southern Berks and the southern Worcester Hills. * WHERE...Interior high terrain of Southern New England. This includes the eastern slopes of the Berkshires, Worcester and northwest Middlesex Counties in Massachusetts, as well as Tolland and Windham Counties in Connecticut. * WHEN...From 5 PM Thursday to noon EST Friday. * IMPACTS...Travel could be very difficult, with tree and powerline damage possible. Greatest risk for ice damage will be in the southern Berks and the southern Worcester Hills. The Friday morning commute will be impacted.

Slow down and use caution while traveling.
Thursday, March 5, 2026

Weather Forecast

Moderate rain
41°F
28.8°F
34.8°F
89%
0.21 in
89%
0%
17 mph
0


Air Quality

AQI: 2 - Moderate
PM2.5: 17.52 μg/m3
PM10: 19.83 μg/m3
Carbon Monoxide: 370.01 μg/m3
Nitrogen Dioxide: 35.77 μg/m3
Sulphur Dioxide: 3.42 μg/m3
Ozone: 29.04 μg/m3

Astronomical

Sunrise: 6:16 AM
Sun Transit: 12:00 AM
Sunset: 5:43 PM
Daylight: 11 hrs 27 mins
Moonrise: 8:21 PM
Moon Transit: 1:14 AM
Moonset: 7:02 AM
Moon Phase: Full
Moon Illumination: 94.0%

Best Times for Fishing or Hunting

Major Periods

12:44 AM - 3:14 AM
3:34 PM - 6:04 PM

Minor Periods

7:51 PM - 9:21 PM
6:32 AM - 8:02 AM

Action Rating: 5 out of 5

Friday, March 6, 2026

Weather Forecast

Heavy rain
36°F
33.6°F
34.7°F
92%
1.23 in
85%
0%
18.1 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 5.45 μg/m3
PM10: 6.82 μg/m3
Carbon Monoxide: 193.37 μg/m3
Nitrogen Dioxide: 6.8 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 84.48 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

Mist
38.5°F
33.3°F
35.8°F
97%
0 in
0%
0%
11.4 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 8.65 μg/m3
PM10: 11.23 μg/m3
Carbon Monoxide: 202.89 μg/m3
Nitrogen Dioxide: 10.66 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 66.96 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

Patchy rain nearby
47.5°F
39.9°F
42.9°F
98%
0.06 in
83%
0%
12.8 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 10.02 μg/m3
PM10: 10.89 μg/m3
Carbon Monoxide: 201 μg/m3
Nitrogen Dioxide: 13.39 μg/m3
Sulphur Dioxide: 2.37 μg/m3
Ozone: 51.52 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

Cloudy
47.3°F
38.9°F
42.9°F
93%
0 in
0%
0%
10.1 mph
2


Air Quality

AQI: 2 - Moderate
PM2.5: 16.79 μg/m3
PM10: 18.56 μg/m3
Carbon Monoxide: 326.95 μg/m3
Nitrogen Dioxide: 34.43 μg/m3
Sulphur Dioxide: 3.48 μg/m3
Ozone: 30.33 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

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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