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

35.1°F
Partly cloudy
Partly cloudy
30.1°F
32.2°F
32%
NW 5.6 mph
10.6 mph
26.6°F
21.7°F
0 in
50%
9 mi
1030 mbar
0

Five Day Weather Forecast

Sunny
Sat
H: 42°F
L: 30°F
Sunny
Sun
H: 50°F
L: 30°F
Overcast
Mon
H: 55°F
L: 41°F
Mist
Tue
H: 59°F
L: 47°F
Patchy rain nearby
Wed
H: 66°F
L: 51°F

Air Quality

AQI: 1 - Good
PM2.5: 4.05 μg/m3
PM10: 5.25 μg/m3
Carbon Monoxide: 216.85 μg/m3
Nitrogen Dioxide: 5.25 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 12:00 AM
Sunset: 7:09 PM
Daylight: 12 hrs 31 mins
Moonrise: 2:34 PM
Moon Transit: 9:54 PM
Moonset: 4:33 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 77.5%

Best Times for Fishing or Hunting

Major Periods

11:28 AM - 1:58 PM
9:24 PM - 11:54 PM

Minor Periods

2:04 PM - 3:34 PM
4:03 AM - 5:33 AM

Action Rating: 2 out of 5

Special Weather Statement issued March 28 at 2:09PM EDT by NWS Boston/Norton MA

Effective: Sat March 28, 2026, 2:09 PM
Expires: Sun March 29, 2026, 6:00 AM

A dry but breezy day is forecast for Sunday, with relative humidities in the afternoon expected to drop into the 30 to 40 percent range and southwesterly wind gusts between 25 and 30 mph. When combined with the lack of recent significant rainfall, elevated fire weather potential will exist for Sunday. Use caution when handling and disposing of ignition sources such as matches and cigarettes.


Special Weather Statement issued March 28 at 6:23PM EDT by NWS Boston/Norton MA

Effective: Sat March 28, 2026, 6:23 PM
Expires: Sun March 29, 2026, 6:00 AM

A dry but breezy day is forecast for Sunday, with relative humidities in the afternoon expected to drop into the 30 to 40 percent range and southwesterly wind gusts between 25 and 30 mph. When combined with the lack of recent significant rainfall, elevated fire weather potential will exist for Sunday. Use caution when handling and disposing of ignition sources such as matches and cigarettes.


Special Weather Statement issued March 28 at 5:31PM EDT by NWS Boston/Norton MA

Effective: Sat March 28, 2026, 5:31 PM
Expires: Sun March 29, 2026, 6:00 AM

A dry but breezy day is forecast for Sunday, with relative humidities in the afternoon expected to drop into the 30 to 40 percent range and southwesterly wind gusts between 25 and 30 mph. When combined with the lack of recent significant rainfall, elevated fire weather potential will exist for Sunday. Use caution when handling and disposing of ignition sources such as matches and cigarettes.


Special Weather Statement issued March 28 at 6:23PM EDT by NWS Boston/Norton MA

Effective: Sat March 28, 2026, 6:23 PM
Expires: Sun March 29, 2026, 6:00 AM

A dry but breezy day is forecast for Sunday, with relative humidities in the afternoon expected to drop into the 30 to 40 percent range and southwesterly wind gusts between 20 and 25 mph. When combined with the lack of recent significant rainfall, elevated fire weather potential will exist for Sunday. Use caution when handling and disposing of ignition sources such as matches and cigarettes.


Special Weather Statement issued March 28 at 5:31PM EDT by NWS Boston/Norton MA

Effective: Sat March 28, 2026, 5:31 PM
Expires: Sun March 29, 2026, 6:00 AM

A dry but breezy day is forecast for Sunday, with relative humidities in the afternoon expected to drop into the 30 to 40 percent range and southwesterly wind gusts between 20 and 25 mph. When combined with the lack of recent significant rainfall, elevated fire weather potential will exist for Sunday. Use caution when handling and disposing of ignition sources such as matches and cigarettes.


Saturday, March 28, 2026

Weather Forecast

Sunny
41.9°F
30.2°F
34°F
46%
0 in
0%
0%
12.8 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 6.42 μg/m3
PM10: 6.98 μg/m3
Carbon Monoxide: 228.77 μg/m3
Nitrogen Dioxide: 7.87 μg/m3
Sulphur Dioxide: 2.34 μg/m3
Ozone: 84.2 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 12:00 AM
Sunset: 7:09 PM
Daylight: 12 hrs 31 mins
Moonrise: 2:34 PM
Moon Transit: 9:54 PM
Moonset: 4:33 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 77.5%

Best Times for Fishing or Hunting

Major Periods

11:28 AM - 1:58 PM
9:24 PM - 11:54 PM

Minor Periods

2:04 PM - 3:34 PM
4:03 AM - 5:33 AM

Action Rating: 2 out of 5

Sunday, March 29, 2026

Weather Forecast

Sunny
49.6°F
30.4°F
38.9°F
55%
0 in
0%
0%
13.2 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 5.73 μg/m3
PM10: 7.16 μg/m3
Carbon Monoxide: 212.85 μg/m3
Nitrogen Dioxide: 5.82 μg/m3
Sulphur Dioxide: 2.33 μg/m3
Ozone: 89.56 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 12:00 AM
Sunset: 7:10 PM
Daylight: 12 hrs 34 mins
Moonrise: 3:45 PM
Moon Transit: 10:41 PM
Moonset: 5:01 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

12:17 AM - 2:47 PM
12:00 AM - 12:00 AM

Minor Periods

3:15 PM - 4:45 PM
4:31 AM - 6:01 AM

Action Rating: 2 out of 5

Monday, March 30, 2026

Weather Forecast

Overcast
55°F
40.6°F
46.9°F
80%
0 in
0%
0%
15.4 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 9.63 μg/m3
PM10: 11.07 μg/m3
Carbon Monoxide: 206.57 μg/m3
Nitrogen Dioxide: 8.01 μg/m3
Sulphur Dioxide: 4.88 μg/m3
Ozone: 97.68 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:00 AM
Sunset: 7:11 PM
Daylight: 12 hrs 36 mins
Moonrise: 4:55 PM
Moon Transit: 11:26 PM
Moonset: 5:24 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.0%

Best Times for Fishing or Hunting

Major Periods

1:02 PM - 3:32 PM
12:00 AM - 12:00 AM

Minor Periods

4:25 PM - 5:55 PM
4:54 AM - 6:24 AM

Action Rating: 3 out of 5

Tuesday, March 31, 2026

Weather Forecast

Mist
59.4°F
46.6°F
51.4°F
89%
0 in
0%
0%
15.2 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 14.57 μg/m3
PM10: 15.5 μg/m3
Carbon Monoxide: 207.53 μg/m3
Nitrogen Dioxide: 16.09 μg/m3
Sulphur Dioxide: 5.58 μg/m3
Ozone: 75.84 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:00 AM
Sunset: 7:12 PM
Daylight: 12 hrs 39 mins
Moonrise: 6:01 PM
Moon Transit: 12:00 AM
Moonset: 5:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:46 PM - 4:16 PM

Minor Periods

5:31 PM - 7:01 PM
5:16 AM - 6:46 AM

Action Rating: 4 out of 5

Wednesday, April 1, 2026

Weather Forecast

Patchy rain nearby
65.9°F
50.8°F
56.4°F
85%
0.18 in
88%
0%
16.3 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 8.92 μg/m3
PM10: 10.47 μg/m3
Carbon Monoxide: 223.47 μg/m3
Nitrogen Dioxide: 5.67 μg/m3
Sulphur Dioxide: 2.03 μg/m3
Ozone: 97.31 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 12:00 AM
Sunset: 7:13 PM
Daylight: 12 hrs 42 mins
Moonrise: 7:06 PM
Moon Transit: 12:09 AM
Moonset: 6:06 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:28 PM - 4:58 PM

Minor Periods

6:36 PM - 8:06 PM
5:36 AM - 7:06 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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