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

35.1°F
Overcast
Overcast
27.5°F
35.7°F
85%
E 10.1 mph
14.3 mph
29.6°F
32.5°F
0 in
100%
9 mi
1014 mbar
0.7

Five Day Weather Forecast

Moderate rain
Fri
H: 42°F
L: 32°F
Overcast
Sat
H: 37°F
L: 27°F
Overcast
Sun
H: 36°F
L: 30°F
Blizzard
Mon
H: 32°F
L: 29°F
Sunny
Tue
H: 36°F
L: 23°F

Air Quality

AQI: 1 - Good
PM2.5: 6.75 μg/m3
PM10: 9.65 μg/m3
Carbon Monoxide: 180.85 μg/m3
Nitrogen Dioxide: 3.05 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 80 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

Winter Weather Advisory issued February 19 at 12:13PM EST until February 21 at 7:00AM EST by NWS Boston/Norton MA

Effective: Thu February 19, 2026, 12:13 PM
Expires: Fri February 20, 2026, 7:00 AM

* WHAT...Mixed precipitation expected. Total snow and sleet accumulations of a coating to 3 inches and ice accumulations up to around two tenths of an inch. * WHERE...Northern Connecticut, northwest Rhode Island, and much of Massachusetts along and south of the Massachusetts Turnpike. * WHEN...From 10 AM Friday to 7 AM EST Saturday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday evening commute.

Slow down and use caution while traveling.


Winter Weather Advisory issued February 20 at 1:31AM EST until February 21 at 7:00AM EST by NWS Boston/Norton MA

Effective: Fri February 20, 2026, 1:31 AM
Expires: Fri February 20, 2026, 4:15 PM

* WHAT...Mixed precipitation expected. Total snow and sleet accumulations of a coating to 3 inches and ice accumulations up to around two tenths of an inch. * WHERE...Portions of northern Connecticut, central, eastern, and western Massachusetts, and northern Rhode Island. * WHEN...From 10 AM this morning to 7 AM EST Saturday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday evening commute.

Slow down and use caution while traveling.
Friday, February 20, 2026

Weather Forecast

Moderate rain
42.1°F
32.2°F
35°F
89%
0.59 in
89%
3%
18.1 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 6.84 μg/m3
PM10: 9.83 μg/m3
Carbon Monoxide: 210.37 μg/m3
Nitrogen Dioxide: 3.22 μg/m3
Sulphur Dioxide: 1.22 μg/m3
Ozone: 78.68 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

Overcast
36.5°F
27°F
34°F
89%
0 in
0%
0%
11.6 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 4.06 μg/m3
PM10: 4.74 μg/m3
Carbon Monoxide: 201.21 μg/m3
Nitrogen Dioxide: 7.78 μg/m3
Sulphur Dioxide: 2.16 μg/m3
Ozone: 81 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

Sunday, February 22, 2026

Weather Forecast

Overcast
35.8°F
30°F
32.5°F
80%
0 in
0%
0%
25.3 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 6.49 μg/m3
PM10: 7.49 μg/m3
Carbon Monoxide: 209.61 μg/m3
Nitrogen Dioxide: 10.41 μg/m3
Sulphur Dioxide: 2.67 μg/m3
Ozone: 74.12 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:01 AM
Sunset: 5:30 PM
Daylight: 10 hrs 57 mins
Moonrise: 8:48 AM
Moon Transit: 4:11 PM
Moonset: 11:50 PM
Moon Phase: Waxing Crescent
Moon Illumination: 29.1%

Best Times for Fishing or Hunting

Major Periods

5:44 AM - 8:14 AM
3:41 PM - 6:11 PM

Minor Periods

12:00 AM - 12:00 AM
8:18 AM - 9:48 AM

Action Rating: 2 out of 5

Monday, February 23, 2026

Weather Forecast

Blizzard
32.3°F
28.5°F
30.4°F
86%
0.49 in
77%
58%
37.1 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 4.85 μg/m3
PM10: 5.95 μg/m3
Carbon Monoxide: 171.78 μg/m3
Nitrogen Dioxide: 8.06 μg/m3
Sulphur Dioxide: 1.99 μg/m3
Ozone: 75.6 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:01 AM
Sunset: 5:31 PM
Daylight: 11 hrs mins
Moonrise: 9:21 AM
Moon Transit: 5:08 PM
Moonset: 12:50 AM
Moon Phase: First Quarter
Moon Illumination: 39.8%

Best Times for Fishing or Hunting

Major Periods

6:39 AM - 9:09 AM
4:38 PM - 7:08 PM

Minor Periods

8:51 AM - 10:21 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, February 24, 2026

Weather Forecast

Sunny
35.5°F
23.3°F
27.5°F
76%
0 in
0%
0%
14.5 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 5.93 μg/m3
PM10: 6.5 μg/m3
Carbon Monoxide: 199.56 μg/m3
Nitrogen Dioxide: 6.62 μg/m3
Sulphur Dioxide: 2.41 μg/m3
Ozone: 83.31 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:01 AM
Sunset: 5:33 PM
Daylight: 11 hrs 2 mins
Moonrise: 10:04 AM
Moon Transit: 6:08 PM
Moonset: 1:06 AM
Moon Phase: First Quarter
Moon Illumination: 51.1%

Best Times for Fishing or Hunting

Major Periods

7:38 AM - 10:08 AM
5:38 PM - 8:08 PM

Minor Periods

9:34 AM - 11:04 AM
12:36 AM - 2:06 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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