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°F

Conditions: Overcast

Feels Like: 17.8°F

Heat Index: 27°F

Humidity: 55%

Wind: NW 11.9 mph

Wind Gusts: 14.7 mph

Wind Chill: 18.2°F

Dew Point: 16.5°F

Precipitation: 0 in

Cloud Cover: 100%

Visibility: 9 mi

Air Pressure: 1022 mbar

UV Index: 1.4

Five Day Weather Forecast

Wed
H: 33°F
L: 13°F

Thu
H: 35°F
L: 14°F

Fri
H: 28°F
L: 20°F

Sat
H: 28°F
L: 7°F

Sun
H: 18°F
L: 2°F

Air Quality

AQI: 1 - Good

PM2.5: 3.85 μg/m3

PM10: 3.95 μg/m3

Carbon Monoxide: 199.85 μg/m3
Nitrogen Dioxide: 4.95 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 74 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 12:01 AM
Sunset: 5:08 PM
Daylight: 10 hrs 12 mins

Moonrise: 8:28 PM
Moon Transit: 1:55 AM
Moonset: 8:19 AM
Moon Phase: Full
Moon Illumination: 90.9%

Best Times for Fishing or Hunting

Major Periods

1:25 AM - 3:55 AM
4:16 PM - 6:46 PM

Minor Periods

7:58 PM - 9:28 PM
7:49 AM - 9:19 AM

Action Rating: 3 out of 5

Special Weather Statement issued February 3 at 5:33PM EST by NWS Upton NY

Effective: Tue February 3, 2026, 5:33 PM
Expires: Wed February 4, 2026, 7:00 AM

Patchy black ice is possible through tonight. Water on sidewalks and roads has been observed in some areas from afternoon snowmelt. This could cause slick conditions on untreated surfaces as water refreezes this evening. Use caution.

Wednesday, February 4, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 32.7°F

Low Temperature: 13.1°F

Average Temperature: 21.3°F

Average Humidity: 59%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 14.1 mph

UV Index: 0.4

Air Quality

AQI: 1 - Good

PM2.5: 12.33 μg/m3

PM10: 12.46 μg/m3

Carbon Monoxide: 297.73 μg/m3
Nitrogen Dioxide: 20.92 μg/m3
Sulphur Dioxide: 4.68 μg/m3
Ozone: 54.4 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 12:01 AM
Sunset: 5:08 PM
Daylight: 10 hrs 12 mins

Moonrise: 8:28 PM
Moon Transit: 1:55 AM
Moonset: 8:19 AM
Moon Phase: Full
Moon Illumination: 90.9%

Best Times for Fishing or Hunting

Major Periods

1:25 AM - 3:55 AM
4:16 PM - 6:46 PM

Minor Periods

7:58 PM - 9:28 PM
7:49 AM - 9:19 AM

Action Rating: 3 out of 5

Thursday, February 5, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 35.1°F

Low Temperature: 14.4°F

Average Temperature: 24.7°F

Average Humidity: 69%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 11.9 mph

UV Index: 0.4

Air Quality

AQI: 1 - Good

PM2.5: 5.31 μg/m3

PM10: 5.41 μg/m3

Carbon Monoxide: 254.41 μg/m3
Nitrogen Dioxide: 6.78 μg/m3
Sulphur Dioxide: 2.28 μg/m3
Ozone: 71.8 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 12:01 AM
Sunset: 5:09 PM
Daylight: 10 hrs 14 mins

Moonrise: 9:34 PM
Moon Transit: 2:39 AM
Moonset: 8:40 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.4%

Best Times for Fishing or Hunting

Major Periods

2:09 AM - 4:39 AM
4:59 PM - 7:29 PM

Minor Periods

9:04 PM - 10:34 PM
8:10 AM - 9:40 AM

Action Rating: 3 out of 5

Friday, February 6, 2026

Weather Forecast

Conditions: Cloudy

High Temperature: 28.2°F

Low Temperature: 19.8°F

Average Temperature: 25°F

Average Humidity: 70%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 9.4 mph

UV Index: 0.3

Air Quality

AQI: 1 - Good

PM2.5: 6.25 μg/m3

PM10: 6.99 μg/m3

Carbon Monoxide: 246.21 μg/m3
Nitrogen Dioxide: 9.27 μg/m3
Sulphur Dioxide: 2.43 μg/m3
Ozone: 75 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 12:01 AM
Sunset: 5:10 PM
Daylight: 10 hrs 16 mins

Moonrise: 10:39 PM
Moon Transit: 3:21 AM
Moonset: 8:59 AM
Moon Phase: Waning Gibbous
Moon Illumination: 74.1%

Best Times for Fishing or Hunting

Major Periods

2:51 AM - 5:21 AM
5:41 PM - 8:11 PM

Minor Periods

10:09 PM - 11:39 PM
8:29 AM - 9:59 AM

Action Rating: 2 out of 5

Saturday, February 7, 2026

Weather Forecast

Conditions: Overcast

High Temperature: 28°F

Low Temperature: 6.9°F

Average Temperature: 22.1°F

Average Humidity: 84%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 26.2 mph

UV Index: 0.3

Air Quality

AQI: 1 - Good

PM2.5: 4.13 μg/m3

PM10: 4.88 μg/m3

Carbon Monoxide: 246.53 μg/m3
Nitrogen Dioxide: 6.5 μg/m3
Sulphur Dioxide: 2.17 μg/m3
Ozone: 79.68 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 12:01 AM
Sunset: 5:12 PM
Daylight: 10 hrs 19 mins

Moonrise: 11:42 PM
Moon Transit: 4:04 AM
Moonset: 9:21 AM
Moon Phase: Waning Gibbous
Moon Illumination: 63.7%

Best Times for Fishing or Hunting

Major Periods

3:34 AM - 6:04 AM
6:24 PM - 8:54 PM

Minor Periods

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

Action Rating: 2 out of 5

Sunday, February 8, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 18.2°F

Low Temperature: 1.8°F

Average Temperature: 8.7°F

Average Humidity: 78%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 22.6 mph

UV Index: 0

Air Quality

AQI: 1 - Good

PM2.5: 2.9 μg/m3

PM10: 2.97 μg/m3

Carbon Monoxide: 182.62 μg/m3
Nitrogen Dioxide: 4.58 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 69.85 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:02 AM
Sunset: 5:13 PM
Daylight: 10 hrs 21 mins

Moonrise: 12:42 AM
Moon Transit: 4:47 AM
Moonset: 9:44 AM
Moon Phase: Last Quarter
Moon Illumination: 52.5%

Best Times for Fishing or Hunting

Major Periods

4:17 AM - 6:47 AM
7:08 PM - 9:38 PM

Minor Periods

9:14 AM - 10:44 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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Water Temperature of the Mystic River in Old Mystic, CT

Current Water Temperature

Temperature Locations

Nearby Water Temperatures

Weather for Old Mystic, Connecticut

Current Weather

Five Day Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Special Weather Statement issued February 3 at 5:33PM EST by NWS Upton NY

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Webcams Near Old Mystic, CT

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