Water Temperature of the Mystic River in Old Mystic, CT

Current Water Temperature

54.5°F

Measurement Time: Wednesday, April 5, 2023, 10:42 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

28.8°F
Overcast
Overcast
16°F
22.8°F
74%
W 19 mph
26.3 mph
12°F
14.8°F
0 in
100%
9 mi
1016 mbar
0

Five Day Weather Forecast

Sunny
Tue
H: 30°F
L: 15°F
Partly Cloudy
Wed
H: 35°F
L: 20°F
Partly Cloudy
Thu
H: 41°F
L: 35°F
Sunny
Fri
H: 39°F
L: 16°F
Moderate or heavy snow showers
Sat
H: 39°F
L: 10°F

Air Quality

PM2.5: 3.15 μg/m3
PM10: 3.15 μg/m3
Carbon Monoxide: 198.85 μg/m3
Nitrogen Dioxide: 4.25 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 11:58 AM
Sunset: 4:49 PM
Daylight: 9 hrs 41 mins
Moonrise: 8:23 AM
Moon Transit: 1:32 PM
Moonset: 6:51 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

3:07 AM - 5:37 AM
1:02 PM - 3:32 PM

Minor Periods

6:21 PM - 7:51 PM
7:53 AM - 9:23 AM

Action Rating: 3 out of 5

Tuesday, January 20, 2026

Weather Forecast

Sunny
29.8°F
15.1°F
22.6°F
52%
0 in
0%
0%
19.2 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 4.46 μg/m3
PM10: 4.55 μg/m3
Carbon Monoxide: 197.61 μg/m3
Nitrogen Dioxide: 6.95 μg/m3
Sulphur Dioxide: 2.96 μg/m3
Ozone: 64.48 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 11:58 AM
Sunset: 4:49 PM
Daylight: 9 hrs 41 mins
Moonrise: 8:23 AM
Moon Transit: 1:32 PM
Moonset: 6:51 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

3:07 AM - 5:37 AM
1:02 PM - 3:32 PM

Minor Periods

6:21 PM - 7:51 PM
7:53 AM - 9:23 AM

Action Rating: 3 out of 5

Wednesday, January 21, 2026

Weather Forecast

Partly Cloudy
34.7°F
19.6°F
26.8°F
56%
0 in
0%
0%
20.8 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 5.15 μg/m3
PM10: 5.75 μg/m3
Carbon Monoxide: 197.04 μg/m3
Nitrogen Dioxide: 7.23 μg/m3
Sulphur Dioxide: 4.57 μg/m3
Ozone: 72.8 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:00 AM
Sunset: 4:51 PM
Daylight: 9 hrs 43 mins
Moonrise: 8:46 AM
Moon Transit: 2:17 PM
Moonset: 7:59 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

3:53 AM - 6:23 AM
1:47 PM - 4:17 PM

Minor Periods

7:29 PM - 8:59 PM
8:16 AM - 9:46 AM

Action Rating: 2 out of 5

Thursday, January 22, 2026

Weather Forecast

Partly Cloudy
41°F
35.1°F
38.3°F
71%
0 in
0%
0%
22.6 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 7.75 μg/m3
PM10: 9.55 μg/m3
Carbon Monoxide: 184.73 μg/m3
Nitrogen Dioxide: 9.3 μg/m3
Sulphur Dioxide: 3.44 μg/m3
Ozone: 74.72 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:00 AM
Sunset: 4:52 PM
Daylight: 9 hrs 44 mins
Moonrise: 9:08 AM
Moon Transit: 12:00 AM
Moonset: 9:07 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:38 AM - 7:08 AM

Minor Periods

8:37 PM - 10:07 PM
8:38 AM - 10:08 AM

Action Rating: 3 out of 5

Friday, January 23, 2026

Weather Forecast

Sunny
39.2°F
15.6°F
29.7°F
67%
0 in
0%
6%
22.6 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 6.2 μg/m3
PM10: 6.44 μg/m3
Carbon Monoxide: 206.93 μg/m3
Nitrogen Dioxide: 13.19 μg/m3
Sulphur Dioxide: 3.67 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:00 AM
Sunset: 4:53 PM
Daylight: 9 hrs 46 mins
Moonrise: 9:29 AM
Moon Transit: 9:54 AM
Moonset: 10:17 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%

Best Times for Fishing or Hunting

Major Periods

5:23 AM - 7:53 AM
9:24 AM - 11:54 AM

Minor Periods

9:47 PM - 11:17 PM
8:59 AM - 10:29 AM

Action Rating: 2 out of 5

Saturday, January 24, 2026

Weather Forecast

Moderate or heavy snow showers
38.5°F
10.2°F
19.5°F
72%
0.47 in
88%
0%
17.7 mph
1


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:00 AM
Sunset: 4:54 PM
Daylight: 9 hrs 48 mins
Moonrise: 9:51 AM
Moon Transit: 4:32 PM
Moonset: 11:28 PM
Moon Phase: First Quarter
Moon Illumination: 34.7%

Best Times for Fishing or Hunting

Major Periods

6:08 AM - 8:38 AM
4:02 PM - 6:32 PM

Minor Periods

12:00 AM - 12:00 AM
9:21 AM - 10:51 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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