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

Current Water Temperature

54.7°F 12.6°C
Cold Thermal Gear Required
54.7°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Cold shock risk with rapid dexterity loss (10–15 mins). Wetsuit or drysuit strongly advised for any immersion.

Measurement Time: Monday, November 9, 2026, 4:30 PM EST

Temperature Locations

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Local Points of Interest

Coast Guard Station Alexandria Bay; Keewaydin State Park

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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

48.6°F
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 68%
Feels Like: 44.1°F
Wind: WNW 10.1 mph
Wind Gusts: 20.4 mph
Pressure: 29.87 in
Precipitation: 0 in
Cloud Cover: 40%
Visibility: 6 mi
UV Index: 0.2

Weather Forecast

Patchy rain nearby
Mon
H: 50°F
L: 44°F
Patchy rain nearby
Tue
H: 54°F
L: 41°F
Overcast
Wed
H: 49°F
L: 43°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
0.3 μg/m³
Good
PM10
0.3 μg/m³
Good
Ozone (O3)
52 μg/m³
Photochemical
NO2
1.8 μg/m³
Nitrogen Dioxide
SO2
0.3 μg/m³
Sulfur Dioxide
CO
136 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 51m daylight
Sunrise 6:52 AM
Solar Noon 11:47 AM
Sunset 4:43 PM
Moon
New • 2%
Moonrise 7:28 AM
Transit 12:01 PM
Moonset 4:28 PM

Best Times for Fishing or Hunting

Major Periods

11:31 AM - 2:01 PM
11:56 PM - 2:26 AM

Minor Periods

6:58 AM - 8:28 AM
3:58 PM - 5:28 PM
Action Rating:
Very Good 4/5
Monday, November 9, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 46.7°F
Average Humidity: 79%
Chance of Rain: 79%
Wind: 14.3 mph
UV Index: 1

Astronomical

Sun
9h 51m daylight
Sunrise 6:52 AM
Solar Noon 11:47 AM
Sunset 4:43 PM
Moon
New • 2%
Moonrise 7:28 AM
Transit 12:01 PM
Moonset 4:28 PM

Best Times for Fishing or Hunting

Major Periods

11:31 AM - 2:01 PM
11:56 PM - 2:26 AM

Minor Periods

6:58 AM - 8:28 AM
3:58 PM - 5:28 PM
Action Rating:
Very Good 4/5
Tuesday, November 10, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 47.8°F
Average Humidity: 74%
Chance of Rain: 40%
Wind: 18.3 mph
UV Index: 1.2

Astronomical

Sun
9h 49m daylight
Sunrise 6:53 AM
Solar Noon 11:47 AM
Sunset 4:42 PM
Moon
New • 0%
Moonrise 8:35 AM
Transit 12:51 PM
Moonset 5:03 PM

Best Times for Fishing or Hunting

Major Periods

12:21 PM - 2:51 PM
11:55 PM - 2:25 AM

Minor Periods

8:05 AM - 9:35 AM
4:33 PM - 6:03 PM
Action Rating:
Very Good 4/5
Wednesday, November 11, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 45.9°F
Average Humidity: 63%
Chance of Rain: 37%
Wind: 13 mph
UV Index: 1.8

Astronomical

Sun
9h 46m daylight
Sunrise 6:55 AM
Solar Noon 11:47 AM
Sunset 4:41 PM
Moon
New • 2%
Moonrise 9:36 AM
Transit 1:42 PM
Moonset 5:47 PM

Best Times for Fishing or Hunting

Major Periods

12:46 AM - 3:16 AM
1:12 PM - 3:42 PM

Minor Periods

9:06 AM - 10:36 AM
5:17 PM - 6:47 PM
Action Rating:
Good Action 3/5
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.

Webcams Near Wellesley Island, NY

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