Weather for Mystic, Connecticut
Current Weather
Humidity: 100%
Heat Index: 44.1°F
Feels Like: 37.1°F
Wind: SSW 9.3 mph
Wind Gusts: 22 mph
Wind Chill: 37.1°F
Dew Point: 37.1°F
Chance of Precipitation: 10%
Precipitation: 0 in
Cloud Cover: 60%
Visibility: 0 mi
UV Index: 0
Five Day Weather Forecast
Mon
H: 49°F
L: 31°F
Tue
H: 31°F
L: 29°F
Wed
H: 35°F
L: 28°F
Thu
H: 29°F
L: 24°F
Fri
H: 29°F
L: 23°F
Air Quality
Nitrogen Dioxide: 3.15 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 76 μg/m3
Astronomical
Sun Transit: 11:50 AM
Sunset: 4:27 PM
Daylight: 9 hrs 14 mins
Moon Transit: 7:27 PM
Moonset: 1:39 AM
Moon Phase: First Quarter
Moon Illumination: 73.5%
Best Times for Fishing or Hunting
Major Periods
9:00 AM - 11:30 AM6:57 PM - 9:27 PM
Minor Periods
11:43 AM - 1:13 PM1:09 AM - 2:39 AM
Action Rating: 2 out of 5
Dense Fog Advisory issued December 29 at 6:43AM EST until December 29 at 10:00AM EST by NWS Upton NY
Effective: Mon December 29, 2025, 6:43 AM
Expires: Mon December 29, 2025, 10:00 AM
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...Until 10 AM EST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Winter Weather Advisory issued December 29 at 12:38AM EST until December 29 at 6:00AM EST by NWS Boston/Norton MA
Effective: Mon December 29, 2025, 12:38 AM
Expires: Mon December 29, 2025, 6:00 AM
* WHAT...Freezing rain. Additional ice accumulations around one tenth of an inch. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, and western Massachusetts, and northern Rhode Island. * WHEN...Until 6 AM EST early this morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Difficult travel conditions are possible. The hazardous conditions could impact the Monday morning commute.
Slow down and use caution while traveling. Prepare for possible power outages. Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury.
Special Weather Statement issued December 29 at 6:25AM EST by NWS Boston/Norton MA
Effective: Mon December 29, 2025, 6:25 AM
Expires: Mon December 29, 2025, 9:00 AM
Temperatures across much of interior southern New England have risen to 32 degrees or just above. While conditions were improving...some of the typical low-lying locations will continue to see pockets of localized light freezing rain & freezing drizzle into mid-morning. Motorists should drive with extra caution into mid-morning especially when traveling across bridges and overpasses. They may appear wet, but contain patches of black ice. Temperatures should rise above freezing in all locations by mid- morning, bringing an end to the icy travel.
Weather Forecast
Average Temperature: 42.1°F
Average Humidity: 88%
Wind: 26.2 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 8.47 μg/m3
Sulphur Dioxide: 2.49 μg/m3
Ozone: 66.68 μg/m3
Astronomical
Sun Transit: 11:50 AM
Sunset: 4:27 PM
Daylight: 9 hrs 14 mins
Moon Transit: 7:27 PM
Moonset: 1:39 AM
Moon Phase: First Quarter
Moon Illumination: 73.5%
Best Times for Fishing or Hunting
Major Periods
9:00 AM - 11:30 AM6:57 PM - 9:27 PM
Minor Periods
11:43 AM - 1:13 PM1:09 AM - 2:39 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 30.6°F
Average Humidity: 59%
Wind: 27.7 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 3.54 μg/m3
Sulphur Dioxide: 1.88 μg/m3
Ozone: 73.12 μg/m3
Astronomical
Sun Transit: 11:50 AM
Sunset: 4:28 PM
Daylight: 9 hrs 14 mins
Moon Transit: 8:24 PM
Moonset: 2:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%
Best Times for Fishing or Hunting
Major Periods
9:55 AM - 12:25 AM7:54 PM - 10:24 PM
Minor Periods
12:16 AM - 1:46 PM2:27 AM - 3:57 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 31.7°F
Average Humidity: 65%
Wind: 21.5 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 7.24 μg/m3
Sulphur Dioxide: 4.17 μg/m3
Ozone: 72.6 μg/m3
Astronomical
Sun Transit: 11:51 AM
Sunset: 4:29 PM
Daylight: 9 hrs 15 mins
Moon Transit: 9:27 PM
Moonset: 4:18 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.5%
Best Times for Fishing or Hunting
Major Periods
10:55 AM - 1:25 PM8:57 PM - 11:27 PM
Minor Periods
12:57 AM - 2:27 PM3:48 AM - 5:18 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 27.7°F
Average Humidity: 54%
Wind: 16.6 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 6.59 μg/m3
Sulphur Dioxide: 3.74 μg/m3
Ozone: 72.2 μg/m3
Astronomical
Sun Transit: 11:51 AM
Sunset: 4:30 PM
Daylight: 9 hrs 16 mins
Moon Transit: 10:33 PM
Moonset: 5:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 2:30 PM12:00 AM - 12:00 AM
Minor Periods
1:51 PM - 3:21 PM5:06 AM - 6:36 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 25.3°F
Average Humidity: 56%
Wind: 13.6 mph
UV Index: 1
Air Quality
Nitrogen Dioxide: 5.25 μg/m3
Sulphur Dioxide: 3.5 μg/m3
Ozone: 74.15 μg/m3
Astronomical
Sun Transit: 11:52 AM
Sunset: 4:30 PM
Daylight: 9 hrs 17 mins
Moon Transit: 11:40 PM
Moonset: 6:48 AM
Moon Phase: Full
Moon Illumination: 99.2%
Best Times for Fishing or Hunting
Major Periods
1:07 PM - 3:37 PM12:00 AM - 12:00 AM
Minor Periods
2:58 PM - 4:28 PM6:18 AM - 7:48 AM
Action Rating: 4 out of 5