Water Temperature of the Mystic River in Old Mystic, CT

Current Water Temperature

54.5°F

Measurement Time: Wednesday, April 5, 2023, 10:36 AM EDT

Temperature Locations

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Mystic River

Station Name: MYSTIC RIVER US RTE I95 BRIDGE NEAR OLD MYSTIC, CT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
3 Whitehall Lndg
Old Mystic, CT 06355
New London County

GPS Coordinates: 41.37782778, -71.9631806

Nearby Water Temperatures

Mystic River, Mystic, CT (1.1 mi)
Mystic Harbor, Mystic, CT (2.2 mi)
Mystic River, Noank, CT (3.6 mi)
Thames River, Groton, CT (6.5 mi)
Pawcatuck River, Westerly, RI (6.8 mi)
Thames River, New London, CT (6.9 mi)
Yantic River, Norwich, CT (14.9 mi)
East Branch Eightmile River, Lyme, CT (19.6 mi)
Eightmile River, East Haddam, CT (19.6 mi)
Connecticut River, Old Lyme, CT (20.4 mi)
Fort Pond Bay, Montauk, NY (22.8 mi)
Orient Harbor, Orient, NY (24.4 mi)
Natchaug River, Chaplin, CT (31.2 mi)
Hemlock Brook, Foster, RI (31.6 mi)
Wilbur Hollow Brook, Clayville, RI (31.6 mi)

Weather for Old Mystic, Connecticut

Current Weather

46.9°F
Clear
Clear
43.4°F
46.9°F
70%
N 8.1 mph
14.8 mph
43.4°F
37.5°F
0 in
0%
6 mi
1018 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Sat
H: 52°F
L: 46°F
Patchy rain nearby
Sun
H: 69°F
L: 43°F
Patchy rain nearby
Mon
H: 64°F
L: 45°F
Sunny
Tue
H: 69°F
L: 42°F
Sunny
Wed
H: 74°F
L: 48°F

Air Quality

AQI: 1 - Good
PM2.5: 1.05 μg/m3
PM10: 1.05 μg/m3
Carbon Monoxide: 125.85 μg/m3
Nitrogen Dioxide: 2.65 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 68 μg/m3

Astronomical

Sunrise: 5:18 AM
Sun Transit: 12:45 AM
Sunset: 8:14 PM
Daylight: 14 hrs 56 mins
Moonrise: 8:08 PM
Moon Transit: 12:00 AM
Moonset: 4:18 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:08 PM - 4:38 PM

Minor Periods

7:38 PM - 9:08 PM
3:48 AM - 5:18 AM

Action Rating: 4 out of 5

Wind Advisory issued May 30 at 2:52AM EDT until May 30 at 8:00PM EDT by NWS Boston/Norton MA

Effective: Sat May 30, 2026, 2:52 AM
Expires: Sat May 30, 2026, 8:00 PM

* WHAT...North winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Portions of central, eastern, northeastern, and southeastern Massachusetts and northern and southern Rhode Island. * WHEN...From 8 AM this morning to 8 PM EDT this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and some power outages may result.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.
Saturday, May 30, 2026

Weather Forecast

Patchy rain nearby
52.2°F
46°F
51.4°F
71%
0.04 in
89%
0%
24.2 mph
2.3


Air Quality

AQI: 1 - Good
PM2.5: 3.68 μg/m3
PM10: 4.14 μg/m3
Carbon Monoxide: 140.68 μg/m3
Nitrogen Dioxide: 3.88 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 73.83 μg/m3

Astronomical

Sunrise: 5:18 AM
Sun Transit: 12:45 AM
Sunset: 8:14 PM
Daylight: 14 hrs 56 mins
Moonrise: 8:08 PM
Moon Transit: 12:00 AM
Moonset: 4:18 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:08 PM - 4:38 PM

Minor Periods

7:38 PM - 9:08 PM
3:48 AM - 5:18 AM

Action Rating: 4 out of 5

Sunday, May 31, 2026

Weather Forecast

Patchy rain nearby
68.7°F
42.6°F
55.6°F
65%
0.02 in
85%
0%
8.5 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 4.48 μg/m3
PM10: 5.11 μg/m3
Carbon Monoxide: 117.54 μg/m3
Nitrogen Dioxide: 5.2 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 73.29 μg/m3

Astronomical

Sunrise: 5:17 AM
Sun Transit: 12:45 AM
Sunset: 8:15 PM
Daylight: 14 hrs 57 mins
Moonrise: 9:07 PM
Moon Transit: 12:33 AM
Moonset: 4:56 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:03 AM - 2:33 AM
2:58 PM - 5:28 PM

Minor Periods

8:37 PM - 10:07 PM
4:26 AM - 5:56 AM

Action Rating: 4 out of 5

Monday, June 1, 2026

Weather Forecast

Patchy rain nearby
64.3°F
45.3°F
56.1°F
76%
0.15 in
89%
0%
10.7 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 7.18 μg/m3
PM10: 8.83 μg/m3
Carbon Monoxide: 139.12 μg/m3
Nitrogen Dioxide: 5.95 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 80.88 μg/m3

Astronomical

Sunrise: 5:17 AM
Sun Transit: 12:45 AM
Sunset: 8:15 PM
Daylight: 14 hrs 59 mins
Moonrise: 9:59 PM
Moon Transit: 1:24 AM
Moonset: 5:41 AM
Moon Phase: Full
Moon Illumination: 96.8%

Best Times for Fishing or Hunting

Major Periods

12:54 AM - 3:24 AM
3:49 PM - 6:19 PM

Minor Periods

9:29 PM - 10:59 PM
5:11 AM - 6:41 AM

Action Rating: 4 out of 5

Tuesday, June 2, 2026

Weather Forecast

Sunny
69.1°F
41.8°F
55°F
65%
0 in
0%
0%
8.9 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 9.91 μg/m3
PM10: 12.06 μg/m3
Carbon Monoxide: 176.38 μg/m3
Nitrogen Dioxide: 8.9 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 71.42 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:45 AM
Sunset: 8:16 PM
Daylight: 15 hrs mins
Moonrise: 10:44 PM
Moon Transit: 2:15 AM
Moonset: 6:34 AM
Moon Phase: Full
Moon Illumination: 91.7%

Best Times for Fishing or Hunting

Major Periods

1:45 AM - 4:15 AM
4:40 PM - 7:10 PM

Minor Periods

10:14 PM - 11:44 PM
6:04 AM - 7:34 AM

Action Rating: 3 out of 5

Wednesday, June 3, 2026

Weather Forecast

Sunny
74.2°F
48.4°F
59.5°F
68%
0 in
0%
0%
10.5 mph
7.8


Air Quality

AQI: 1 - Good
PM2.5: 7.48 μg/m3
PM10: 9.82 μg/m3
Carbon Monoxide: 155.22 μg/m3
Nitrogen Dioxide: 9.89 μg/m3
Sulphur Dioxide: 0.52 μg/m3
Ozone: 61 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:46 AM
Sunset: 8:17 PM
Daylight: 15 hrs 1 mins
Moonrise: 11:21 PM
Moon Transit: 3:06 AM
Moonset: 7:33 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.4%

Best Times for Fishing or Hunting

Major Periods

2:36 AM - 5:06 AM
5:30 PM - 8:00 PM

Minor Periods

12:00 AM - 12:00 AM
7:03 AM - 8:33 AM

Action Rating: 4 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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