Water Temperature of Mystic Harbor in Mystic, CT

Current Water Temperature

47.5°F

Measurement Time: Wednesday, April 5, 2023, 8:00 AM EDT

Temperature Locations

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Local Points of Interest

Mason Island

Mystic Harbor

Station Name: MYSTIC HARBOR AT SAFE HARBOR MARINA NR MYSTIC, CT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
99 Roseleah Dr
Mystic, CT 06355
New London County

GPS Coordinates: 41.3464722, -71.9688611

Nearby Water Temperatures

Mystic River, Mystic, CT (1 mi)
Mystic River, Noank, CT (1.5 mi)
Mystic River, Old Mystic, CT (2.2 mi)
Thames River, Groton, CT (5.9 mi)
Thames River, New London, CT (6.8 mi)
Pawcatuck River, Westerly, RI (7.5 mi)
Yantic River, Norwich, CT (16.7 mi)
Connecticut River, Old Lyme, CT (19.7 mi)
East Branch Eightmile River, Lyme, CT (19.8 mi)
Eightmile River, East Haddam, CT (20 mi)
Fort Pond Bay, Montauk, NY (20.6 mi)
Orient Harbor, Orient, NY (22.8 mi)
Connecticut River, Middletown, CT (33.1 mi)
Natchaug River, Chaplin, CT (33.2 mi)
Great Harbor, North Kingstown, RI (33.4 mi)

Weather for Mystic, Connecticut

Current Weather

34°F
Partly Cloudy
Partly Cloudy
28°F
34.9°F
92%
WSW 6.7 mph
13.6 mph
28.4°F
31°F
0 in
0%
6 mi
1020 mbar
0

Five Day Weather Forecast

Moderate rain
Sun
H: 37°F
L: 31°F
Blizzard
Mon
H: 30°F
L: 25°F
Light freezing rain
Tue
H: 25°F
L: 16°F
Partly Cloudy
Wed
H: 16°F
L: 7°F
Heavy snow
Thu
H: 27°F
L: 14°F

Air Quality

PM2.5: 4.55 μg/m3
PM10: 4.65 μg/m3
Carbon Monoxide: 218.85 μg/m3
Nitrogen Dioxide: 17.55 μg/m3
Sulphur Dioxide: 9.45 μg/m3
Ozone: 39 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 11:58 AM
Sunset: 4:47 PM
Daylight: 9 hrs 37 mins
Moonrise: 7:22 AM
Moon Transit: 11:55 AM
Moonset: 4:34 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
11:25 AM - 1:55 PM

Minor Periods

4:04 PM - 5:34 PM
6:52 AM - 8:22 AM

Action Rating: 4 out of 5

Special Weather Statement issued January 17 at 5:51PM EST by NWS Upton NY

Effective: Sat January 17, 2026, 5:51 PM
Expires: Sun January 18, 2026, 4:00 AM

Roads remain wet from earlier precipitation, and with light winds and temperatures falling into the 20s and lower 30s, areas of black ice may develop. Motorists and pedestrians should use extra caution. Reduce speed, allow extra time, and be prepared for slippery travel.


Winter Weather Advisory issued January 17 at 3:15PM EST until January 18 at 10:00PM EST by NWS Upton NY

Effective: Sat January 17, 2026, 3:15 PM
Expires: Sat January 17, 2026, 11:15 PM

* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches. * WHERE...Portions of southern Connecticut and southeast New York. * WHEN...From 10 AM to 10 PM EST Sunday. * IMPACTS...Plan on slippery road conditions.

Slow down and use caution while traveling. Check local Department of Transportation information services for the latest road conditions.


Winter Weather Advisory issued January 18 at 1:18AM EST until January 19 at 4:00AM EST by NWS Upton NY

Effective: Sun January 18, 2026, 1:18 AM
Expires: Sun January 18, 2026, 6:15 PM

* WHAT...Snow expected. Total snow accumulations between 3 and 5 inches. Isolated amounts up to 7 inches are possible in northern New London and northern Middlesex Counties. * WHERE...Portions of southern Connecticut and southeast New York. * WHEN...From 10 AM this morning to 4 AM EST Monday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Precipitation may start off as a rain/snow mix at the coast. By late this afternoon all snow is expected. The bulk of the accumulation is expected to be after 5 pm today.

Slow down and use caution while traveling. Check local Department of Transportation information services for the latest road conditions.


Winter Weather Advisory issued January 17 at 1:17PM EST until January 19 at 4:00AM EST by NWS Boston/Norton MA

Effective: Sat January 17, 2026, 1:17 PM
Expires: Sun January 18, 2026, 2:30 AM

* WHAT...Snow expected. Total snow accumulations between 3 and 5 inches with localized spots up to 6 inches. * WHERE...Portions of southeastern Massachusetts and northern and southern Rhode Island. * WHEN...From 10 AM Sunday to 4 AM EST Monday. * IMPACTS...Plan on slippery road conditions.

Slow down and use caution while traveling.


Special Weather Statement issued January 17 at 6:43PM EST by NWS Boston/Norton MA

Effective: Sat January 17, 2026, 6:43 PM
Expires: Sun January 18, 2026, 7:00 AM

Temperatures around freezing overnight may lead to patches of black ice due to freezing standing water from today's snow and rain. Motorists and pedestrians should use caution when heading out this evening, as some surfaces may appear wet but could be slick. Conditions will improve Sunday morning as temperatures climb above freezing.


Winter Weather Advisory issued January 17 at 6:22PM EST until January 19 at 4:00AM EST by NWS Boston/Norton MA

Effective: Sat January 17, 2026, 6:22 PM
Expires: Sun January 18, 2026, 7:30 AM

* WHAT...Snow expected. Total snow accumulations between 3 and 5 inches with localized spots up to 6 inches. * WHERE...Portions of southeastern Massachusetts and all of Rhode Island except Block Island. * WHEN...From 10 AM Sunday to 4 AM EST Monday. * IMPACTS...Plan on slippery road conditions.

Slow down and use caution while traveling.


Winter Weather Advisory issued January 18 at 12:55AM EST until January 19 at 7:00AM EST by NWS Boston/Norton MA

Effective: Sun January 18, 2026, 12:55 AM
Expires: Sun January 18, 2026, 2:00 PM

* WHAT...Snow expected. Total snow accumulations between 3 and 6 inches with localized 7 inch amounts possible. * WHERE...Southeast Massachusetts and Rhode Island. * WHEN...From 7 AM this morning to 7 AM EST Monday. * IMPACTS...Plan on slippery road conditions. Periods of snow develop Sunday morning and continue at times into Sunday afternoon. The heaviest of the snow will occur late Sunday afternoon and night...when snowfall rates may exceed 1 inch per hour. While the steadiest snow should be over by daybreak Monday... snow showers may linger into the Monday morning commute making for hazardous travel.

Slow down and use caution while traveling.


Winter Weather Advisory issued January 17 at 1:17PM EST until January 18 at 10:00PM EST by NWS Boston/Norton MA

Effective: Sat January 17, 2026, 1:17 PM
Expires: Sun January 18, 2026, 2:30 AM

* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches. * WHERE...Hartford CT, Tolland CT, and Windham CT Counties. * WHEN...From 10 AM to 10 PM EST Sunday. * IMPACTS...Plan on slippery road conditions.

Slow down and use caution while traveling.


Winter Weather Advisory issued January 17 at 6:22PM EST until January 18 at 10:00PM EST by NWS Boston/Norton MA

Effective: Sat January 17, 2026, 6:22 PM
Expires: Sun January 18, 2026, 7:30 AM

* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches. * WHERE...Hartford, Tolland, and Windham Counties. * WHEN...From 10 AM to 10 PM EST Sunday. * IMPACTS...Plan on slippery road conditions.

Slow down and use caution while traveling.


Winter Weather Advisory issued January 18 at 12:55AM EST until January 19 at 7:00AM EST by NWS Boston/Norton MA

Effective: Sun January 18, 2026, 12:55 AM
Expires: Sun January 18, 2026, 2:00 PM

* WHAT...Snow expected. Total snow accumulations between 2 and 5 inches. * WHERE...Hartford CT, Tolland CT, and Windham CT Counties. * WHEN...From 7 AM this morning to 7 AM EST Monday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Periods of light snow develop Sunday morning and persist into the afternoon. The steadiest snow and the worst of the travel conditions will be late Sunday afternoon and night.

Slow down and use caution while traveling.


Sunday, January 18, 2026

Weather Forecast

Moderate rain
36.5°F
30.5°F
33.9°F
85%
0.42 in
87%
21%
19 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 9.3 μg/m3
PM10: 11.47 μg/m3
Carbon Monoxide: 204.72 μg/m3
Nitrogen Dioxide: 12.03 μg/m3
Sulphur Dioxide: 5.84 μg/m3
Ozone: 51.77 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 11:58 AM
Sunset: 4:47 PM
Daylight: 9 hrs 37 mins
Moonrise: 7:22 AM
Moon Transit: 11:55 AM
Moonset: 4:34 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
11:25 AM - 1:55 PM

Minor Periods

4:04 PM - 5:34 PM
6:52 AM - 8:22 AM

Action Rating: 4 out of 5

Monday, January 19, 2026

Weather Forecast

Blizzard
30.2°F
25.2°F
27.8°F
86%
1.16 in
86%
50%
28.9 mph
0


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: 7:09 AM
Sun Transit: 11:58 AM
Sunset: 4:48 PM
Daylight: 9 hrs 39 mins
Moonrise: 7:55 AM
Moon Transit: 12:44 AM
Moonset: 5:42 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

2:19 AM - 4:49 AM
12:14 AM - 2:44 PM

Minor Periods

5:12 PM - 6:42 PM
7:25 AM - 8:55 AM

Action Rating: 5 out of 5

Tuesday, January 20, 2026

Weather Forecast

Light freezing rain
25.3°F
16.1°F
22.1°F
74%
0.02 in
65%
37%
19.2 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: 7:09 AM
Sun Transit: 11:58 AM
Sunset: 4:50 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
16°F
6.8°F
11.5°F
75%
0 in
0%
18%
17.7 mph
2


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: 7:08 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

Heavy snow
27.1°F
14.2°F
20.3°F
86%
0.06 in
88%
48%
10.5 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: 7:07 AM
Sun Transit: 12:00 AM
Sunset: 4:52 PM
Daylight: 9 hrs 45 mins
Moonrise: 9:08 AM
Moon Transit: 12:00 AM
Moonset: 9:08 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

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