Water Temperature of the St. Lawrence River in Wellesley Island, NY

Current Water Temperature

35.6°F

Measurement Time: Sunday, February 15, 2026, 2:00 AM EST

Temperature Locations

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Local Points of Interest

Coast Guard Station Alexandria Bay; Keewaydin State Park

St. Lawrence River

Station Name: Alexandria Bay
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 240 feet

Sensor Depth: -2 feet

Nearest Address:
45898 Hopewell Hall Rd
Wellesley Island, NY 13640
Jefferson County

GPS Coordinates: 44.331110, -75.934528

Nearby Water Temperatures

St. Lawrence River, Ogdensburg, NY (33.6 mi)
Independence River, Donnattsburg, NY (50.2 mi)
Oswego River, Oswego, NY (67.1 mi)
Buck Creek, Inlet, NY (72.6 mi)
Lake Ontario, Rochester, NY (87.9 mi)
Skaneateles Lake, Skaneateles, NY (98.9 mi)
Irondequoit Creek, Penfield, NY (113.6 mi)
Allen Creek, Brighton, NY (115 mi)
Northrup Creek, North Greece, NY (116.9 mi)
Genesee River, Rochester, NY (117.5 mi)
Erie Canal, Rochester, NY (119.5 mi)
Sandy Creek, North Hamlin, NY (120.2 mi)
Mohawk River, Fonda, NY (123.3 mi)
Lake Champlain, Port Henry, NY (124.4 mi)
Schoharie Creek, Fort Hunter, NY (126.9 mi)

Weather for Wellesley Island, New York

Current Weather

18.9°F
Mist
Mist
11.2°F
22.7°F
95%
ENE 5.4 mph
11.3 mph
19.2°F
21.3°F
0 in
0%
1 mi
1021 mbar
0

Five Day Weather Forecast

Patchy moderate snow
Sun
H: 33°F
L: 19°F
Overcast
Mon
H: 35°F
L: 29°F
Fog
Tue
H: 34°F
L: 30°F
Moderate or heavy snow showers
Wed
H: 30°F
L: 14°F
Blowing snow
Thu
H: 22°F
L: 11°F

Air Quality

PM2.5: 5.85 μg/m3
PM10: 6.05 μg/m3
Carbon Monoxide: 175.85 μg/m3
Nitrogen Dioxide: 5.05 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 85 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 12:17 AM
Sunset: 5:33 PM
Daylight: 10 hrs 30 mins
Moonrise: 6:22 AM
Moon Transit: 10:53 AM
Moonset: 3:34 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:23 AM - 12:53 AM

Minor Periods

3:04 PM - 4:34 PM
5:52 AM - 7:22 AM

Action Rating: 3 out of 5

Sunday, February 15, 2026

Weather Forecast

Patchy moderate snow
32.7°F
19.2°F
26.3°F
90%
0.03 in
78%
3%
6.5 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 7.43 μg/m3
PM10: 7.58 μg/m3
Carbon Monoxide: 200.85 μg/m3
Nitrogen Dioxide: 9.52 μg/m3
Sulphur Dioxide: 1.89 μg/m3
Ozone: 76.64 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 12:17 AM
Sunset: 5:33 PM
Daylight: 10 hrs 30 mins
Moonrise: 6:22 AM
Moon Transit: 10:53 AM
Moonset: 3:34 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:23 AM - 12:53 AM

Minor Periods

3:04 PM - 4:34 PM
5:52 AM - 7:22 AM

Action Rating: 3 out of 5

Monday, February 16, 2026

Weather Forecast

Overcast
34.6°F
28.9°F
33°F
98%
0 in
0%
0%
13.2 mph
0.2


Air Quality

AQI: 2 - Moderate
PM2.5: 17.31 μg/m3
PM10: 17.79 μg/m3
Carbon Monoxide: 247.69 μg/m3
Nitrogen Dioxide: 13.89 μg/m3
Sulphur Dioxide: 2.47 μg/m3
Ozone: 64.48 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:17 AM
Sunset: 5:34 PM
Daylight: 10 hrs 32 mins
Moonrise: 6:49 AM
Moon Transit: 11:42 AM
Moonset: 4:46 PM
Moon Phase: New
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

12:44 AM - 3:14 AM
11:12 AM - 1:42 PM

Minor Periods

4:16 PM - 5:46 PM
6:19 AM - 7:49 AM

Action Rating: 4 out of 5

Tuesday, February 17, 2026

Weather Forecast

Fog
33.6°F
30.4°F
33.2°F
97%
0.01 in
71%
26%
13.2 mph
0.2


Air Quality

AQI: 2 - Moderate
PM2.5: 15.61 μg/m3
PM10: 16.19 μg/m3
Carbon Monoxide: 214.21 μg/m3
Nitrogen Dioxide: 10.48 μg/m3
Sulphur Dioxide: 2.68 μg/m3
Ozone: 68.88 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:17 AM
Sunset: 5:36 PM
Daylight: 10 hrs 35 mins
Moonrise: 7:11 AM
Moon Transit: 12:29 AM
Moonset: 5:59 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:32 AM - 4:02 AM
11:59 AM - 2:29 PM

Minor Periods

5:29 PM - 6:59 PM
6:41 AM - 8:11 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Moderate or heavy snow showers
30°F
13.5°F
23.3°F
92%
0.09 in
77%
24%
13 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 7.24 μg/m3
PM10: 7.39 μg/m3
Carbon Monoxide: 243.58 μg/m3
Nitrogen Dioxide: 11.33 μg/m3
Sulphur Dioxide: 1.9 μg/m3
Ozone: 68.23 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 12:17 AM
Sunset: 5:37 PM
Daylight: 10 hrs 38 mins
Moonrise: 7:31 AM
Moon Transit: 1:14 PM
Moonset: 7:11 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

2:18 AM - 4:48 AM
12:44 AM - 3:14 PM

Minor Periods

6:41 PM - 8:11 PM
7:01 AM - 8:31 AM

Action Rating: 4 out of 5

Thursday, February 19, 2026

Weather Forecast

Blowing snow
22.4°F
10.6°F
20.1°F
89%
0.03 in
87%
52%
17.4 mph
1


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 12:17 AM
Sunset: 5:38 PM
Daylight: 10 hrs 41 mins
Moonrise: 7:50 AM
Moon Transit: 4:07 PM
Moonset: 8:25 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

3:37 PM - 6:07 PM
3:37 PM - 6:07 PM

Minor Periods

7:55 PM - 9:25 PM
7:20 AM - 8:50 AM

Action Rating: 5 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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