Water Temperature of Norwalk Harbor in Norwalk, CT
Current Water Temperature
Measurement Time: Tuesday, July 15, 2025, 2:00 PM EDT
Temperature Locations
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Local Points of Interest
Sheffield Island Harbor; Calf Pasture and Shady Beach; Long Island SoundSponsored Content
Station Name: NORWALK HARBOR AT THE COVE MARINA NR E NORWALK, CT
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 0 feet / 0 meters
Nearest Address:
52 Calf Pasture Beach Rd
Norwalk, CT 06855
Fairfield County
GPS Coordinates: 41.08395, -73.3999861
Nearby Water Temperatures
Norwalk River, Norwalk, CT (1.5 mi)Norwalk River, Norwalk, CT (2.0 mi)
Saugatuck River, Westport, CT (2.2 mi)
Saugatuck River, Westport Village, CT (3.2 mi)
Mill River, Fairfield, CT (6.5 mi)
Mill River, Southport, CT (7.0 mi)
Rooster River, Bridgeport, CT (11.5 mi)
Bridgeport Harbor, Bridgeport, CT (12.9 mi)
Flax Pond, Old Field, NY (15.8 mi)
Frost Creek, Lattingtown, NY (15.9 mi)
Housatonic River, Stratford, CT (16.2 mi)
East Creek, Sands Point, NY (22.1 mi)
Long Island Sound, Kings Point, NY (26.8 mi)
Hudson River, Yonkers, NY (28.2 mi)
New Haven Harbor, New Haven, CT (29.0 mi)
Weather for Norwalk, Connecticut
Current Weather

Humidity: 70%
Feels Like: 91.3°F
Wind: S 6.7 mph
Wind Gusts: 11 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0.3
Five Day Weather Forecast

Tue
H: 88°F
L: 73°F

Wed
H: 85°F
L: 73°F

Thu
H: 91°F
L: 75°F

Fri
H: 86°F
L: 72°F

Sat
H: 81°F
L: 63°F
Air Quality
Nitrogen Dioxide: 57.91 μg/m3
Sulphur Dioxide: 11.29 μg/m3
Ozone: 80 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:25 PM
Daylight: 14 hrs 51 mins
Moon Transit: 4:37 AM
Moonset: 10:38 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.7%
Best Times for Fishing or Hunting
Major Periods
4:07 AM - 6:37 AM12:00 AM - 12:00 AM
Minor Periods
12:00 AM - 12:00 AM10:08 AM - 11:38 AM
Action Rating: 2 out of 5
Heat Advisory issued July 15 at 2:14PM EDT until July 17 at 10:00PM EDT by NWS Upton NY
Effective: Tue July 15, 2025, 2:14 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...Heat index values up to 102 expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 11 AM Wednesday to 10 PM EDT Thursday. The highest heat index values will occur during the afternoon each day. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.
Heat Advisory issued July 15 at 2:14PM EDT until July 17 at 10:00PM EDT by NWS Upton NY
Effective: Tue July 15, 2025, 2:14 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...Heat index values up to 102 expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 11 AM Wednesday to 10 PM EDT Thursday. The highest heat index values will occur during the afternoon each day. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.
Heat Advisory issued July 15 at 2:14PM EDT until July 17 at 10:00PM EDT by NWS Upton NY
Effective: Tue July 15, 2025, 2:14 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...Heat index values up to 102 expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 11 AM Wednesday to 10 PM EDT Thursday. The highest heat index values will occur during the afternoon each day. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.
Heat Advisory issued July 15 at 2:14PM EDT until July 17 at 10:00PM EDT by NWS Upton NY
Effective: Tue July 15, 2025, 2:14 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...Heat index values up to 102 expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 11 AM Wednesday to 10 PM EDT Thursday. The highest heat index values will occur during the afternoon each day. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.
Heat Advisory issued July 15 at 2:14PM EDT until July 17 at 10:00PM EDT by NWS Upton NY
Effective: Tue July 15, 2025, 2:14 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...Heat index values up to 102 expected. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From 11 AM Wednesday to 10 PM EDT Thursday. The highest heat index values will occur during the afternoon each day. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health conditions are at an increased risk. Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. If you don't have home air conditioning, continue to seek out cool spaces each day as long as it remains hot, and for a few days after if your home is still hot. Check on vulnerable friends, family members and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.
Weather Forecast
Average Temperature: 78.6°F
Average Humidity: 85%
Wind: 6.9 mph
UV Index: 2.5
Air Quality
Nitrogen Dioxide: 40.32 μg/m3
Sulphur Dioxide: 9.26 μg/m3
Ozone: 86.96 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:25 PM
Daylight: 14 hrs 51 mins
Moon Transit: 4:37 AM
Moonset: 10:38 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.7%
Best Times for Fishing or Hunting
Major Periods
4:07 AM - 6:37 AM12:00 AM - 12:00 AM
Minor Periods
12:00 AM - 12:00 AM10:08 AM - 11:38 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 77.4°F
Average Humidity: 89%
Wind: 11.9 mph
UV Index: 2.3
Air Quality
Nitrogen Dioxide: 41.03 μg/m3
Sulphur Dioxide: 11.83 μg/m3
Ozone: 125.64 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:24 PM
Daylight: 14 hrs 49 mins
Moon Transit: 1:15 AM
Moonset: 11:49 AM
Moon Phase: Waning Gibbous
Moon Illumination: 55.7%
Best Times for Fishing or Hunting
Major Periods
12:45 AM - 3:15 AM12:45 AM - 3:15 AM
Minor Periods
11:19 AM - 12:49 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 81.1°F
Average Humidity: 83%
Wind: 12.1 mph
UV Index: 2.4
Air Quality
Nitrogen Dioxide: 28.51 μg/m3
Sulphur Dioxide: 8.75 μg/m3
Ozone: 109.84 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:23 PM
Daylight: 14 hrs 48 mins
Moon Transit: 6:11 AM
Moonset: 1:02 PM
Moon Phase: Last Quarter
Moon Illumination: 44.4%
Best Times for Fishing or Hunting
Major Periods
5:41 AM - 8:11 AM8:23 PM - 10:53 PM
Minor Periods
12:32 AM - 2:02 PM12:00 AM - 12:00 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 78.9°F
Average Humidity: 68%
Wind: 10.3 mph
UV Index: 1.9
Air Quality
Nitrogen Dioxide: 15.94 μg/m3
Sulphur Dioxide: 5.71 μg/m3
Ozone: 99.76 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:23 PM
Daylight: 14 hrs 46 mins
Moon Transit: 7:01 AM
Moonset: 2:18 PM
Moon Phase: Last Quarter
Moon Illumination: 33.4%
Best Times for Fishing or Hunting
Major Periods
6:31 AM - 9:01 AM9:15 PM - 11:45 PM
Minor Periods
1:48 PM - 3:18 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 72.6°F
Average Humidity: 62%
Wind: 8.3 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 19.14 μg/m3
Sulphur Dioxide: 2.76 μg/m3
Ozone: 65.38 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:22 PM
Daylight: 14 hrs 44 mins
Moon Transit: 7:54 AM
Moonset: 3:35 PM
Moon Phase: Last Quarter
Moon Illumination: 23.2%
Best Times for Fishing or Hunting
Major Periods
7:24 AM - 9:54 AM12:00 AM - 12:00 AM
Minor Periods
3:05 PM - 4:35 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5