Water Temperature of Norwalk Harbor in Norwalk, CT

Current Water Temperature

69.8°F

Measurement Time: Friday, June 12, 2026, 11:54 AM EDT

Temperature Locations

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Local Points of Interest

Sheffield Island Harbor; Calf Pasture and Shady Beach; Long Island Sound

Norwalk Harbor

Station Name: NORWALK HARBOR AT THE COVE MARINA NR E NORWALK, CT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

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 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 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 mi)

Weather for Norwalk, Connecticut

Current Weather

91.9°F
Sunny
Sunny
96.3°F
102.8°F
46%
W 14.1 mph
23.5 mph
94°F
69°F
0 in
0%
9 mi
1005 mbar
4.3

Five Day Weather Forecast

Patchy rain nearby
Fri
H: 97°F
L: 70°F
Sunny
Sat
H: 85°F
L: 67°F
Moderate rain
Sun
H: 84°F
L: 66°F
Patchy rain nearby
Mon
H: 74°F
L: 59°F
Sunny
Tue
H: 76°F
L: 59°F

Air Quality

AQI: 1 - Good
PM2.5: 6 μg/m3
PM10: 8.4 μg/m3
Carbon Monoxide: 139 μg/m3
Nitrogen Dioxide: 1.2 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 123 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:53 AM
Sunset: 8:27 PM
Daylight: 15 hrs 6 mins
Moonrise: 2:48 AM
Moon Transit: 10:17 AM
Moonset: 6:00 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:47 AM - 12:17 AM

Minor Periods

5:30 PM - 7:00 PM
2:18 AM - 3:48 AM

Action Rating: 2 out of 5

Air Quality Alert issued June 11 at 2:38PM EDT by NWS Upton NY

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Thu June 11, 2026, 2:38 PM
Expires: Fri June 12, 2026, 2:45 PM

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Southern Fairfield, Southern New Haven, Southern Middlesex, and Southern New London. until 11 PM EDT this evening. An Air Quality Action Day means that Ground Level Ozone 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 June 12 at 2:02AM EDT by NWS Upton NY

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Fri June 12, 2026, 2:02 AM
Expires: Fri June 12, 2026, 11:00 PM

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Southern Fairfield, Southern New Haven, Southern Middlesex, and Southern New London, from 11 AM this morning to 11 PM EDT this evening. An Air Quality Action Day means that Ground Level Ozone 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 June 11 at 11:17PM EDT by NWS Upton NY

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Thu June 11, 2026, 11:17 PM
Expires: Fri June 12, 2026, 11:00 PM

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Southern Fairfield, Southern New Haven, Southern Middlesex, and Southern New London. until 11 PM EDT Friday evening. An Air Quality Action Day means that Ground Level Ozone 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


Coastal Flood Statement issued June 12 at 5:12AM EDT until June 13 at 12:00AM EDT by NWS Upton NY

Effective: Fri June 12, 2026, 5:12 AM
Expires: Fri June 12, 2026, 8:00 PM

* WHAT...Up to one half foot of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...Southern Fairfield County. * WHEN...This evening. * IMPACTS...Brief minor flooding of the more vulnerable locations near the waterfront and shoreline.

Do not drive through flooded roadways.


Heat Advisory issued June 12 at 2:55AM EDT until June 12 at 8:00PM EDT by NWS Upton NY

Effective: Fri June 12, 2026, 2:55 AM
Expires: Fri June 12, 2026, 8:00 PM

* WHAT...Heat index values up to 101. * WHERE...In Connecticut, Northern Fairfield, Northern Middlesex, Northern New Haven, Southern Fairfield, and Southern New Haven Counties. In New York, Northern Nassau, Northwest Suffolk, Southern Nassau, and Southwest Suffolk Counties. * WHEN...Until 8 PM EDT this evening. * 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.


Friday, June 12, 2026

Weather Forecast

Patchy rain nearby
97.3°F
70.3°F
83.4°F
63%
0.01 in
17%
0%
18.8 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 5.92 μg/m3
PM10: 6.5 μg/m3
Carbon Monoxide: 150.58 μg/m3
Nitrogen Dioxide: 6.54 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 86.63 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:53 AM
Sunset: 8:27 PM
Daylight: 15 hrs 6 mins
Moonrise: 2:48 AM
Moon Transit: 10:17 AM
Moonset: 6:00 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:47 AM - 12:17 AM

Minor Periods

5:30 PM - 7:00 PM
2:18 AM - 3:48 AM

Action Rating: 2 out of 5

Saturday, June 13, 2026

Weather Forecast

Sunny
84.8°F
67.3°F
75.8°F
54%
0 in
2%
0%
10.5 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 3.68 μg/m3
PM10: 4.03 μg/m3
Carbon Monoxide: 123.29 μg/m3
Nitrogen Dioxide: 4.13 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 88.46 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:53 AM
Sunset: 8:27 PM
Daylight: 15 hrs 7 mins
Moonrise: 3:27 AM
Moon Transit: 11:18 AM
Moonset: 7:20 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:35 AM - 3:05 AM
10:48 AM - 1:18 PM

Minor Periods

6:50 PM - 8:20 PM
2:57 AM - 4:27 AM

Action Rating: 3 out of 5

Sunday, June 14, 2026

Weather Forecast

Moderate rain
84°F
65.5°F
71.1°F
69%
0.69 in
71%
0%
14.8 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 11.25 μg/m3
PM10: 12.23 μg/m3
Carbon Monoxide: 141.04 μg/m3
Nitrogen Dioxide: 15.28 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 96.21 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:53 AM
Sunset: 8:28 PM
Daylight: 15 hrs 7 mins
Moonrise: 4:18 AM
Moon Transit: 12:24 AM
Moonset: 8:36 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

1:39 AM - 4:09 AM
11:54 AM - 2:24 PM

Minor Periods

8:06 PM - 9:36 PM
3:48 AM - 5:18 AM

Action Rating: 5 out of 5

Monday, June 15, 2026

Weather Forecast

Patchy rain nearby
74.1°F
58.6°F
67.4°F
65%
0.12 in
57%
0%
11.9 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 2.98 μg/m3
PM10: 3.21 μg/m3
Carbon Monoxide: 120.51 μg/m3
Nitrogen Dioxide: 4.75 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 70.79 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:54 AM
Sunset: 8:28 PM
Daylight: 15 hrs 8 mins
Moonrise: 5:21 AM
Moon Transit: 1:32 PM
Moonset: 9:40 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

2:47 AM - 5:17 AM
1:02 PM - 3:32 PM

Minor Periods

9:10 PM - 10:40 PM
4:51 AM - 6:21 AM

Action Rating: 5 out of 5

Tuesday, June 16, 2026

Weather Forecast

Sunny
75.8°F
58.5°F
66.7°F
55%
0 in
3%
0%
11.6 mph
5.9


Air Quality

AQI: 1 - Good
PM2.5: 3.51 μg/m3
PM10: 3.56 μg/m3
Carbon Monoxide: 144.22 μg/m3
Nitrogen Dioxide: 8.54 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 51.11 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:54 AM
Sunset: 8:29 PM
Daylight: 15 hrs 8 mins
Moonrise: 6:36 AM
Moon Transit: 2:38 PM
Moonset: 10:31 PM
Moon Phase: New
Moon Illumination: 1.0%

Best Times for Fishing or Hunting

Major Periods

3:54 AM - 6:24 AM
2:08 PM - 4:38 PM

Minor Periods

10:01 PM - 11:31 PM
6:06 AM - 7:36 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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