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

Current Water Temperature

35.6°F

Measurement Time: Thursday, February 12, 2026, 1:48 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

22.3°F

Conditions: Clear

Feels Like: 12.5°F

Heat Index: 13.7°F

Humidity: 82%

Wind: NW 8.7 mph

Wind Gusts: 14.6 mph

Wind Chill: 4.5°F

Dew Point: 3.7°F

Precipitation: 0 in

Cloud Cover: 0%

Visibility: 6 mi

Air Pressure: 1014 mbar

UV Index: 0

Five Day Weather Forecast

Thu
H: 25°F
L: 10°F

Fri
H: 26°F
L: -0°F

Sat
H: 33°F
L: 27°F

Sun
H: 32°F
L: 19°F

Mon
H: 30°F
L: 21°F

Air Quality

PM2.5: 1.75 μg/m3

PM10: 1.85 μg/m3

Carbon Monoxide: 145.85 μg/m3
Nitrogen Dioxide: 2.25 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 86 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:17 AM
Sunset: 5:29 PM
Daylight: 10 hrs 21 mins

Moonrise: 4:19 AM
Moon Transit: 8:18 AM
Moonset: 12:19 AM
Moon Phase: Waning Crescent
Moon Illumination: 12.2%

Best Times for Fishing or Hunting

Major Periods

7:48 AM - 10:18 AM
12:00 AM - 12:00 AM

Minor Periods

11:49 AM - 1:19 PM
3:49 AM - 5:19 AM

Action Rating: 2 out of 5

Winter Weather Advisory issued February 11 at 12:49PM EST until February 12 at 1:00AM EST by NWS Buffalo NY

Effective: Wed February 11, 2026, 12:49 PM
Expires: Thu February 12, 2026, 1:00 AM

* WHAT...Snow. Additional snow accumulations 2 to 5 inches. Higher amounts will be across the Tug Hill Plateau and western Adirondacks. * WHERE...The Eastern Lake Ontario Region. * WHEN...Until 1 AM EST Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Wednesday evening commute.

Periods of snow will result in snow covered roads and limited visibilities. Slow down and use caution while driving. Submit snow reports through our website or social media.

Winter Weather Advisory issued February 11 at 11:47PM EST until February 12 at 10:00AM EST by NWS Buffalo NY

Effective: Wed February 11, 2026, 11:47 PM
Expires: Thu February 12, 2026, 10:00 AM

* WHAT...Snow. Additional snow accumulations 2 to 4 inches. Higher amounts will be across the Tug Hill Plateau. * WHERE...The Eastern Lake Ontario Region. * WHEN...Until 10 AM EST Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Thursday morning commute.

Periods of snow will result in snow covered roads and limited visibilities. Slow down and use caution while driving. Submit snow reports through our website or social media.

Thursday, February 12, 2026

Weather Forecast

Conditions: Overcast

High Temperature: 25.3°F

Low Temperature: 9.9°F

Average Temperature: 18.2°F

Average Humidity: 79%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 9.6 mph

UV Index: 0.5

Air Quality

AQI: 1 - Good

PM2.5: 2.4 μg/m3

PM10: 2.53 μg/m3

Carbon Monoxide: 161.69 μg/m3
Nitrogen Dioxide: 3.46 μg/m3
Sulphur Dioxide: 1.56 μg/m3
Ozone: 83.8 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:17 AM
Sunset: 5:29 PM
Daylight: 10 hrs 21 mins

Moonrise: 4:19 AM
Moon Transit: 8:18 AM
Moonset: 12:19 AM
Moon Phase: Waning Crescent
Moon Illumination: 12.2%

Best Times for Fishing or Hunting

Major Periods

7:48 AM - 10:18 AM
12:00 AM - 12:00 AM

Minor Periods

11:49 AM - 1:19 PM
3:49 AM - 5:19 AM

Action Rating: 2 out of 5

Friday, February 13, 2026

Weather Forecast

Conditions: Mist

High Temperature: 25.9°F

Low Temperature: -0.4°F

Average Temperature: 13.8°F

Average Humidity: 92%

Precipitation: 0.14 in

Chance of Rain: 62%

Chance of Snow: 9%

Maximum Wind: 13.4 mph

UV Index: 0.5

Air Quality

AQI: 1 - Good

PM2.5: 3.76 μg/m3

PM10: 3.87 μg/m3

Carbon Monoxide: 213.37 μg/m3
Nitrogen Dioxide: 7.83 μg/m3
Sulphur Dioxide: 1.82 μg/m3
Ozone: 75.96 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:17 AM
Sunset: 5:30 PM
Daylight: 10 hrs 24 mins

Moonrise: 5:08 AM
Moon Transit: 9:11 AM
Moonset: 1:17 PM
Moon Phase: Waning Crescent
Moon Illumination: 5.8%

Best Times for Fishing or Hunting

Major Periods

8:41 AM - 11:11 AM
12:00 AM - 12:00 AM

Minor Periods

12:47 AM - 2:17 PM
4:38 AM - 6:08 AM

Action Rating: 2 out of 5

Saturday, February 14, 2026

Weather Forecast

Conditions: Moderate or heavy snow showers

High Temperature: 32.5°F

Low Temperature: 27°F

Average Temperature: 30.2°F

Average Humidity: 92%

Precipitation: 0.16 in

Chance of Rain: 71%

Chance of Snow: 9%

Maximum Wind: 13.9 mph

UV Index: 0.4

Air Quality

AQI: 1 - Good

PM2.5: 2.84 μg/m3

PM10: 2.89 μg/m3

Carbon Monoxide: 180.17 μg/m3
Nitrogen Dioxide: 4.49 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 79.8 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:17 AM
Sunset: 5:31 PM
Daylight: 10 hrs 27 mins

Moonrise: 5:49 AM
Moon Transit: 10:03 AM
Moonset: 2:24 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:33 AM - 12:03 AM

Minor Periods

1:54 PM - 3:24 PM
5:19 AM - 6:49 AM

Action Rating: 3 out of 5

Sunday, February 15, 2026

Weather Forecast

Conditions: Light freezing rain

High Temperature: 31.5°F

Low Temperature: 19.1°F

Average Temperature: 26.7°F

Average Humidity: 95%

Precipitation: 0.01 in

Chance of Rain: 80%

Chance of Snow: 24%

Maximum Wind: 8.7 mph

UV Index: 0.3

Air Quality

AQI: 1 - Good

PM2.5: 4.87 μg/m3

PM10: 4.93 μg/m3

Carbon Monoxide: 194.49 μg/m3
Nitrogen Dioxide: 6.51 μg/m3
Sulphur Dioxide: 1.6 μg/m3
Ozone: 74.38 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

Conditions: Mist

High Temperature: 30.4°F

Low Temperature: 21°F

Average Temperature: 25.4°F

Average Humidity: 95%

Precipitation: 0.05 in

Chance of Rain: 60%

Chance of Snow: 51%

Maximum Wind: 6.3 mph

UV Index: 0

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: 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

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

Current Water Temperature

Temperature Locations

Local Points of Interest

Nearby Water Temperatures

Weather for Wellesley Island, New York

Current Weather

Five Day Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Winter Weather Advisory issued February 11 at 12:49PM EST until February 12 at 1:00AM EST by NWS Buffalo NY

Winter Weather Advisory issued February 11 at 11:47PM EST until February 12 at 10:00AM EST by NWS Buffalo NY

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Webcams Near Wellesley Island, NY

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