Water Temperature of the Norwalk River in Norwalk, CT

Current Water Temperature

73.2°F

Measurement Time: Saturday, July 18, 2026, 3:06 PM EDT

Temperature Locations

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Local Points of Interest

The Maritime Aquarium

Norwalk River

Station Name: NORWALK RIVER AT NORWALK AQUARIUM NR S NORWALK, CT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
50 N Water St
Norwalk, CT 06854
Fairfield County

GPS Coordinates: 41.10161944, -73.4159472

Nearby Water Temperatures

Norwalk River, Norwalk, CT (0.8 mi)
Norwalk Harbor, Norwalk, CT (1.5 mi)
Saugatuck River, Westport, CT (2.6 mi)
Saugatuck River, Westport Village, CT (2.9 mi)
Mill River, Fairfield, CT (6.8 mi)
Mill River, Southport, CT (7.3 mi)
Rooster River, Bridgeport, CT (11.6 mi)
Bridgeport Harbor, Bridgeport, CT (13.2 mi)
Frost Creek, Lattingtown, NY (16.4 mi)
Housatonic River, Stratford, CT (16.5 mi)
Flax Pond, Old Field, NY (17.1 mi)
East Creek, Sands Point, NY (22.4 mi)
Long Island Sound, Kings Point, NY (27.1 mi)
Hudson River, Yonkers, NY (27.9 mi)
Bronx River, Bronx, NY (29.1 mi)

Weather for Norwalk, Connecticut

Current Weather

73°F
Mist
Mist
77.1°F
83.2°F
96%
SSW 9.8 mph
17.8 mph
77.7°F
74.7°F
0 in
100%
1 mi
1006 mbar
0.2

Five Day Weather Forecast

Smoky haze
Sat
H: 88°F
L: 66°F
Sunny
Sun
H: 80°F
L: 66°F
Sunny
Mon
H: 79°F
L: 60°F
Light rain shower
Tue
H: 78°F
L: 69°F
Cloudy
Wed
H: 83°F
L: 67°F

Air Quality

AQI: 1 - Good
PM2.5: 29.5 μg/m3
PM10: 30.4 μg/m3
Carbon Monoxide: 157 μg/m3
Nitrogen Dioxide: 12.8 μg/m3
Sulphur Dioxide: 2.2 μg/m3
Ozone: 122 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:00 PM
Sunset: 8:23 PM
Daylight: 14 hrs 47 mins
Moonrise: 10:32 AM
Moon Transit: 4:46 PM
Moonset: 10:51 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

6:11 AM - 8:41 AM
4:16 PM - 6:46 PM

Minor Periods

10:21 PM - 11:51 PM
10:02 AM - 11:32 AM

Action Rating: 2 out of 5

Small Craft Advisory issued July 18 at 2:32AM EDT until July 19 at 12:00AM EDT by NWS Upton NY

Effective: Sat July 18, 2026, 2:32 AM
Expires: Sat July 18, 2026, 5:00 PM

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt. * WHERE...Long Island Sound east of Port Jefferson and New Haven, Peconic and Gardiners Bays, and South Shore Bays from Jones Inlet through Shinnecock Bay. * WHEN...From noon today to midnight EDT tonight. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Saturday, July 18, 2026

Weather Forecast

Smoky haze
87.6°F
66.4°F
74.1°F
82%
0.67 in
80%
0%
17 mph
3.2


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 47.4 μg/m3
PM10: 49.01 μg/m3
Carbon Monoxide: 162.88 μg/m3
Nitrogen Dioxide: 19.3 μg/m3
Sulphur Dioxide: 2.1 μg/m3
Ozone: 93.83 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:00 PM
Sunset: 8:23 PM
Daylight: 14 hrs 47 mins
Moonrise: 10:32 AM
Moon Transit: 4:46 PM
Moonset: 10:51 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

6:11 AM - 8:41 AM
4:16 PM - 6:46 PM

Minor Periods

10:21 PM - 11:51 PM
10:02 AM - 11:32 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
79.5°F
65.7°F
72.7°F
65%
0 in
17%
0%
17 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 6.78 μg/m3
PM10: 6.83 μg/m3
Carbon Monoxide: 205.71 μg/m3
Nitrogen Dioxide: 4.51 μg/m3
Sulphur Dioxide: 0.67 μg/m3
Ozone: 84.42 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 1:00 PM
Sunset: 8:22 PM
Daylight: 14 hrs 45 mins
Moonrise: 11:39 AM
Moon Transit: 5:30 PM
Moonset: 11:12 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

6:55 AM - 9:25 AM
5:00 PM - 7:30 PM

Minor Periods

12:00 AM - 12:00 AM
11:09 AM - 12:39 AM

Action Rating: 2 out of 5

Monday, July 20, 2026

Weather Forecast

Sunny
79°F
60°F
70.1°F
52%
0 in
2%
0%
9.6 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 9.29 μg/m3
PM10: 9.66 μg/m3
Carbon Monoxide: 158.38 μg/m3
Nitrogen Dioxide: 8.98 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 87.58 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:00 PM
Sunset: 8:22 PM
Daylight: 14 hrs 43 mins
Moonrise: 12:45 AM
Moon Transit: 6:14 PM
Moonset: 12:12 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

7:38 AM - 10:08 AM
5:44 PM - 8:14 PM

Minor Periods

12:15 AM - 1:45 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 21, 2026

Weather Forecast

Light rain shower
77.7°F
68.6°F
72.8°F
79%
0.44 in
79%
0%
13.2 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 13.38 μg/m3
PM10: 15.84 μg/m3
Carbon Monoxide: 161.95 μg/m3
Nitrogen Dioxide: 13.25 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 89.29 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 1:00 PM
Sunset: 8:21 PM
Daylight: 14 hrs 42 mins
Moonrise: 1:50 PM
Moon Transit: 6:58 PM
Moonset: 12:34 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

8:22 AM - 10:52 AM
6:28 PM - 8:58 PM

Minor Periods

1:20 PM - 2:50 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Cloudy
83.1°F
66.9°F
75.7°F
73%
0.02 in
36%
0%
15.2 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 5.18 μg/m3
PM10: 5.33 μg/m3
Carbon Monoxide: 205 μg/m3
Nitrogen Dioxide: 15.37 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 64.11 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 1:00 PM
Sunset: 8:20 PM
Daylight: 14 hrs 40 mins
Moonrise: 2:54 PM
Moon Transit: 7:43 PM
Moonset: 12:59 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

9:07 AM - 11:37 AM
7:13 PM - 9:43 PM

Minor Periods

2:24 PM - 3:54 PM
12:00 AM - 12:00 AM

Action Rating: 2 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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