Water Temperature of Norwalk Harbor in Norwalk, CT
Current Water Temperature
Measurement Time: Tuesday, August 5, 2025, 8:00 AM 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: 51%
Feels Like: 85.8°F
Wind: ESE 6 mph
Wind Gusts: 7.7 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 8 mi
UV Index: 3.2
Five Day Weather Forecast

Tue
H: 82°F
L: 62°F

Wed
H: 82°F
L: 68°F

Thu
H: 74°F
L: 68°F

Fri
H: 81°F
L: 67°F

Sat
H: 83°F
L: 65°F
Air Quality
Nitrogen Dioxide: 39.41 μg/m3
Sulphur Dioxide: 7.4 μg/m3
Ozone: 133 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:05 PM
Daylight: 14 hrs 11 mins
Moon Transit: 10:15 PM
Moonset: 1:37 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.0%
Best Times for Fishing or Hunting
Major Periods
11:36 AM - 2:06 PM12:00 AM - 12:00 AM
Minor Periods
5:30 PM - 7:00 PM1:07 AM - 2:37 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 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 New York State Department of Environmental Conservation has issued an Air Quality Health Advisory for the following counties: New York, Bronx, Kings, Queens, Richmond, Westchester, Rockland, Orange, Putnam. until midnight EDT tonight. Air quality levels in outdoor air are predicted to be greater than an Air Quality Index value of 100 for the pollutant of Ground Level Ozone and Fine Particulates. The Air Quality Index, or AQI, was created as an easy way to correlate levels of different pollutants to one scale. The higher the AQI value, the greater the health concern. When pollution levels are elevated, the New York State Department of Health recommends that individuals consider limiting strenuous outdoor physical activity to reduce the risk of adverse health effects. People who may be especially sensitive to the effects of elevated levels of pollutants include the very young, and those with preexisting respiratory problems such as asthma or heart disease. Those with symptoms should consider consulting their personal physician. For additional information, please visit the New York State Department of Environmental Conservation website at, https://on.ny.gov/nyaqi, or call the Air Quality Hotline at 1 800 5 3 5, 1 3 4 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 New York State Department of Environmental Conservation has issued an Air Quality Health Advisory for the following counties: New York, Bronx, Kings, Queens, Richmond, Westchester, Rockland, Orange, Putnam. until midnight EDT tonight. Air quality levels in outdoor air are predicted to be greater than an Air Quality Index value of 100 for the pollutant of Ground Level Ozone and Fine Particulates. The Air Quality Index, or AQI, was created as an easy way to correlate levels of different pollutants to one scale. The higher the AQI value, the greater the health concern. When pollution levels are elevated, the New York State Department of Health recommends that individuals consider limiting strenuous outdoor physical activity to reduce the risk of adverse health effects. People who may be especially sensitive to the effects of elevated levels of pollutants include the very young, and those with preexisting respiratory problems such as asthma or heart disease. Those with symptoms should consider consulting their personal physician. For additional information, please visit the New York State Department of Environmental Conservation website at, https://on.ny.gov/nyaqi, or call the Air Quality Hotline at 1 800 5 3 5, 1 3 4 5.
Weather Forecast
Average Temperature: 73.6°F
Average Humidity: 79%
Wind: 7.2 mph
UV Index: 1.6
Air Quality
Nitrogen Dioxide: 39.38 μg/m3
Sulphur Dioxide: 6.61 μg/m3
Ozone: 111 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:05 PM
Daylight: 14 hrs 11 mins
Moon Transit: 10:15 PM
Moonset: 1:37 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.0%
Best Times for Fishing or Hunting
Major Periods
11:36 AM - 2:06 PM12:00 AM - 12:00 AM
Minor Periods
5:30 PM - 7:00 PM1:07 AM - 2:37 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 72.3°F
Average Humidity: 73%
Wind: 10.1 mph
UV Index: 1.5
Air Quality
Nitrogen Dioxide: 25.97 μg/m3
Sulphur Dioxide: 6.99 μg/m3
Ozone: 108.44 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:04 PM
Daylight: 14 hrs 9 mins
Moon Transit: 11:10 PM
Moonset: 2:33 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 94.4%
Best Times for Fishing or Hunting
Major Periods
12:31 AM - 3:01 PM12:00 AM - 12:00 AM
Minor Periods
6:18 PM - 7:48 PM2:03 AM - 3:33 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 70.8°F
Average Humidity: 65%
Wind: 8.7 mph
UV Index: 1.9
Air Quality
Nitrogen Dioxide: 17.06 μg/m3
Sulphur Dioxide: 4.21 μg/m3
Ozone: 86.24 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:03 PM
Daylight: 14 hrs 7 mins
Moon Transit: 12:00 AM
Moonset: 3:37 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM1:25 PM - 3:55 PM
Minor Periods
6:58 PM - 8:28 PM3:07 AM - 4:37 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 72.1°F
Average Humidity: 60%
Wind: 9.2 mph
UV Index: 2
Air Quality
Nitrogen Dioxide: 29.56 μg/m3
Sulphur Dioxide: 6.79 μg/m3
Ozone: 73.2 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:01 PM
Daylight: 14 hrs 5 mins
Moon Transit: 12:04 AM
Moonset: 4:48 AM
Moon Phase: Full
Moon Illumination: 100.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM2:18 PM - 4:48 PM
Minor Periods
7:31 PM - 9:01 PM4:18 AM - 5:48 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 73°F
Average Humidity: 56%
Wind: 10.7 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 45.2 μg/m3
Sulphur Dioxide: 9.22 μg/m3
Ozone: 47.38 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:00 PM
Daylight: 14 hrs 2 mins
Moon Transit: 12:56 AM
Moonset: 6:00 AM
Moon Phase: Full
Moon Illumination: 99.0%
Best Times for Fishing or Hunting
Major Periods
12:26 AM - 2:56 AM3:08 PM - 5:38 PM
Minor Periods
7:59 PM - 9:29 PM5:30 AM - 7:00 AM
Action Rating: 5 out of 5