Water Temperature of the Mystic River in Mystic, CT
Current Water Temperature
Measurement Time: Monday, April 10, 2023, 5:24 AM EDT
Temperature Locations
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Local Points of Interest
Mystic SeaportSponsored Content
Station Name: MYSTIC RIVER AT MYSTIC SEAPORT NEAR MYSTIC, CT
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 0 feet / 0 meters
Nearest Address:
93 Pearl St
Mystic, CT 06355
New London County
GPS Coordinates: 41.3614722, -71.96727778
Nearby Water Temperatures
Mystic Harbor, Mystic, CT (1.0 mi)Mystic River, Old Mystic, CT (1.1 mi)
Mystic River, Noank, CT (2.5 mi)
Thames River, Groton, CT (6.0 mi)
Thames River, New London, CT (6.7 mi)
Pawcatuck River, Westerly, RI (7.1 mi)
Yantic River, Norwich, CT (15.8 mi)
East Branch Eightmile River, Lyme, CT (19.6 mi)
Eightmile River, East Haddam, CT (19.7 mi)
Connecticut River, Old Lyme, CT (19.9 mi)
Fort Pond Bay, Montauk, NY (21.6 mi)
Orient Harbor, Orient, NY (23.5 mi)
Natchaug River, Chaplin, CT (32.2 mi)
Wilbur Hollow Brook, Clayville, RI (32.7 mi)
Hemlock Brook, Foster, RI (32.7 mi)
Weather for Mystic, Connecticut
Current Weather

Humidity: 69%
Feels Like: 84.9°F
Wind: SE 6.9 mph
Wind Gusts: 8.9 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 2.8
Five Day Weather Forecast

Tue
H: 78°F
L: 62°F

Wed
H: 76°F
L: 64°F

Thu
H: 73°F
L: 64°F

Fri
H: 74°F
L: 63°F

Sat
H: 77°F
L: 64°F
Air Quality
Nitrogen Dioxide: 23.5 μg/m3
Sulphur Dioxide: 2.22 μg/m3
Ozone: 105 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 8:00 PM
Daylight: 14 hrs 13 mins
Moon Transit: 10:09 PM
Moonset: 1:29 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.0%
Best Times for Fishing or Hunting
Major Periods
11:42 AM - 2:12 PM12:00 AM - 12:00 AM
Minor Periods
5:25 PM - 6:55 PM12:59 AM - 2:29 AM
Action Rating: 2 out of 5
Air Quality Alert issued August 5 at 12:35AM EDT by NWS Upton NY
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Tue August 5, 2025, 12:35 AM
Expires: Tue August 5, 2025, 11:00 PM
The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex. until 11 PM EDT this evening. An Air Quality Action Day means that Ground Level Ozone and Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi
Air Quality Alert issued August 5 at 12:35AM EDT by NWS Upton NY
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Tue August 5, 2025, 12:35 AM
Expires: Tue August 5, 2025, 11:00 PM
The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex. until 11 PM EDT this evening. An Air Quality Action Day means that Ground Level Ozone and Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi
Air Quality Alert issued August 5 at 9:54AM EDT by NWS Upton NY
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Tue August 5, 2025, 9:54 AM
Expires: Wed August 6, 2025, 12:00 AM
The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex. until 11 PM EDT this evening. An Air Quality Action Day means that Ground Level Ozone and Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi
Air Quality Alert issued August 5 at 1:26AM EDT by NWS Boston/Norton MA
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Tue August 5, 2025, 1:26 AM
Expires: Tue August 5, 2025, 11:15 PM
The Connecticut Department of Environmental Protection has issued an Air Quality Action Day for Fine Particulates, from 11 AM this morning to 11 PM EDT this evening. An Air Quality Action day means that Fine Particulates concentrations within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection website at: https://portal.ct.gov/deep
Air Quality Alert issued August 5 at 7:22AM EDT by NWS Boston/Norton MA
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Tue August 5, 2025, 7:22 AM
Expires: Tue August 5, 2025, 11:15 PM
The Connecticut Department of Environmental Protection has issued an Air Quality Action Day for Fine Particulates, from 11 AM this morning to 11 PM EDT this evening. An Air Quality Action day means that Fine Particulates concentrations within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection website at: https://portal.ct.gov/deep
Weather Forecast
Average Temperature: 69°F
Average Humidity: 92%
Wind: 8.7 mph
UV Index: 1.8
Air Quality
Nitrogen Dioxide: 17.13 μg/m3
Sulphur Dioxide: 3.34 μg/m3
Ozone: 131.92 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 8:00 PM
Daylight: 14 hrs 13 mins
Moon Transit: 10:09 PM
Moonset: 1:29 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.0%
Best Times for Fishing or Hunting
Major Periods
11:42 AM - 2:12 PM12:00 AM - 12:00 AM
Minor Periods
5:25 PM - 6:55 PM12:59 AM - 2:29 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 69.2°F
Average Humidity: 75%
Wind: 10.7 mph
UV Index: 1.3
Air Quality
Nitrogen Dioxide: 14.83 μg/m3
Sulphur Dioxide: 2.91 μg/m3
Ozone: 95.12 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 7:59 PM
Daylight: 14 hrs 10 mins
Moon Transit: 11:04 PM
Moonset: 2:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 94.4%
Best Times for Fishing or Hunting
Major Periods
12:37 AM - 3:07 PM12:00 AM - 12:00 AM
Minor Periods
6:13 PM - 7:43 PM1:56 AM - 3:26 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 68.2°F
Average Humidity: 70%
Wind: 9.8 mph
UV Index: 1.3
Air Quality
Nitrogen Dioxide: 6.65 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 74.88 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 7:57 PM
Daylight: 14 hrs 8 mins
Moon Transit: 11:58 PM
Moonset: 3:30 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.4%
Best Times for Fishing or Hunting
Major Periods
1:31 PM - 4:01 PM12:00 AM - 12:00 AM
Minor Periods
6:53 PM - 8:23 PM3:00 AM - 4:30 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 68.3°F
Average Humidity: 66%
Wind: 8.9 mph
UV Index: 2
Air Quality
Nitrogen Dioxide: 7.87 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 77.04 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 7:56 PM
Daylight: 14 hrs 6 mins
Moon Transit: 12:00 AM
Moonset: 4:41 AM
Moon Phase: Full
Moon Illumination: 100.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM2:24 PM - 4:54 PM
Minor Periods
7:26 PM - 8:56 PM4:11 AM - 5:41 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 70°F
Average Humidity: 65%
Wind: 9.8 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 6.45 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 78.23 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 7:55 PM
Daylight: 14 hrs 4 mins
Moon Transit: 12:50 AM
Moonset: 5:54 AM
Moon Phase: Full
Moon Illumination: 99.0%
Best Times for Fishing or Hunting
Major Periods
12:20 AM - 2:50 AM3:14 PM - 5:44 PM
Minor Periods
7:54 PM - 9:24 PM5:24 AM - 6:54 AM
Action Rating: 5 out of 5