Water Temperature of the Mystic River in Old Mystic, CT
Current Water Temperature
Measurement Time: Wednesday, April 5, 2023, 10:42 AM EDT
Temperature Locations
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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

Five Day Weather Forecast

Sun
H: 48°F
L: 32°F

Mon
H: 54°F
L: 38°F

Tue
H: 41°F
L: 31°F

Wed
H: 34°F
L: 25°F

Thu
H: 38°F
L: 29°F
Air Quality
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 95 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 6:55 PM
Daylight: 11 hrs 55 mins
Moon Transit: 10:16 AM
Moonset: 3:16 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:46 AM - 12:16 AM
Minor Periods
2:46 PM - 4:16 PM4:54 AM - 6:24 AM
Action Rating: 2 out of 5
Wind Advisory issued March 15 at 2:26PM EDT until March 17 at 4:00AM EDT by NWS Upton NY
Effective: Sun March 15, 2026, 2:26 PM
Expires: Mon March 16, 2026, 6:00 AM
* WHAT...South winds 15 to 25 mph with gusts up to 50 mph expected. Isolated gusts up to 55 mph. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 2 PM Monday to 4 AM EDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.
Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.
Flood Watch issued March 15 at 2:22PM EDT until March 17 at 8:00AM EDT by NWS Upton NY
Effective: Sun March 15, 2026, 2:22 PM
Expires: Mon March 16, 2026, 6:00 AM
* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...All of southern Connecticut, including the following areas, Northern Fairfield, Northern Middlesex, Northern New Haven, Northern New London, Southern Fairfield, Southern Middlesex, Southern New Haven and Southern New London. * WHEN...From late tonight through Tuesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
High Wind Watch issued March 15 at 12:58AM EDT until March 17 at 6:00AM EDT by NWS Boston/Norton MA
Effective: Sun March 15, 2026, 12:58 AM
Expires: Sun March 15, 2026, 4:00 PM
* WHAT...South winds 20 to 30 mph with gusts up to 60 mph possible. * WHERE...Portions of eastern, northeastern, and southeastern Massachusetts and northern and southern Rhode Island. * WHEN...From Monday afternoon through late Monday night. * IMPACTS...Damaging winds could blow down trees and power lines. Power outages are possible. Travel could be difficult, especially for high profile vehicles.
Monitor the latest forecasts and warnings for updates.
Flood Watch issued March 15 at 12:14PM EDT until March 17 at 8:00AM EDT by NWS Boston/Norton MA
Effective: Sun March 15, 2026, 12:14 PM
Expires: Mon March 16, 2026, 5:00 AM
Heavy rain may fall on a deep primed snowpack leading to the melt increasing. Flows in rivers may increase quickly and reach critical levels. * WHAT...Flooding caused by rain and snowmelt is possible. * WHERE...Portions of northern Connecticut, including the following areas, Hartford CT, Tolland CT and Windham CT, Massachusetts, including the following areas, Barnstable MA, Central Middlesex MA, Eastern Essex MA, Eastern Franklin MA, Eastern Hampden MA, Eastern Hampshire MA, Eastern Norfolk MA, Eastern Plymouth MA, Northern Bristol MA, Northern Middlesex MA, Northern Worcester MA, Southeast Middlesex MA, Southern Bristol MA, Southern Plymouth MA, Southern Worcester MA, Suffolk MA, Western Essex MA, Western Franklin MA, Western Hampden MA, Western Hampshire MA, Western Norfolk MA and Western Plymouth MA, and Rhode Island, including the following areas, Bristol RI, Eastern Kent RI, Newport RI, Northwest Providence RI, Southeast Providence RI, Washington RI and Western Kent RI. * WHEN...From late tonight through Tuesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
High Wind Watch issued March 15 at 12:13PM EDT until March 17 at 6:00AM EDT by NWS Boston/Norton MA
Effective: Sun March 15, 2026, 12:13 PM
Expires: Mon March 16, 2026, 4:00 AM
* WHAT...South winds 20 to 30 mph with gusts up to 60 mph possible. * WHERE...Portions of eastern, northeastern, and southeastern Massachusetts and northern and southern Rhode Island. * WHEN...From Monday afternoon through late Monday night. * IMPACTS...Damaging winds could blow down trees and power lines. Power outages are possible. Travel could be difficult, especially for high profile vehicles.
Monitor the latest forecasts and warnings for updates.
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.2 μg/m3
Sulphur Dioxide: 2.1 μg/m3
Ozone: 89.32 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 6:55 PM
Daylight: 11 hrs 55 mins
Moon Transit: 10:16 AM
Moonset: 3:16 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:46 AM - 12:16 AM
Minor Periods
2:46 PM - 4:16 PM4:54 AM - 6:24 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.8 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 81.68 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 6:56 PM
Daylight: 11 hrs 58 mins
Moon Transit: 11:03 AM
Moonset: 4:27 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.6%
Best Times for Fishing or Hunting
Major Periods
12:39 AM - 3:09 AM10:33 AM - 1:03 PM
Minor Periods
3:57 PM - 5:27 PM5:20 AM - 6:50 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.99 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 85.12 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 6:57 PM
Daylight: 12 hrs 1 mins
Moon Transit: 11:50 AM
Moonset: 5:37 PM
Moon Phase: New
Moon Illumination: 0.1%
Best Times for Fishing or Hunting
Major Periods
1:25 AM - 3:55 AM11:20 AM - 1:50 PM
Minor Periods
5:07 PM - 6:37 PM5:45 AM - 7:15 AM
Action Rating: 5 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.85 μg/m3
Sulphur Dioxide: 2.18 μg/m3
Ozone: 84.2 μg/m3
Astronomical
Sun Transit: 12:55 AM
Sunset: 6:58 PM
Daylight: 12 hrs 3 mins
Moon Transit: 12:36 AM
Moonset: 6:48 PM
Moon Phase: New
Moon Illumination: 2.2%
Best Times for Fishing or Hunting
Major Periods
2:12 AM - 4:42 AM12:06 AM - 2:36 PM
Minor Periods
6:18 PM - 7:48 PM6:07 AM - 7:37 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.68 μg/m3
Sulphur Dioxide: 1.99 μg/m3
Ozone: 86.23 μg/m3
Astronomical
Sun Transit: 12:00 AM
Sunset: 6:59 PM
Daylight: 12 hrs 6 mins
Moon Transit: 1:31 AM
Moonset: 8:01 PM
Moon Phase: New
Moon Illumination: 0.3%
Best Times for Fishing or Hunting
Major Periods
1:01 AM - 3:31 AM1:01 AM - 3:31 AM
Minor Periods
7:31 PM - 9:01 PM6:29 AM - 7:59 AM
Action Rating: 4 out of 5
