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

Current Water Temperature

36.5°F

Measurement Time: Tuesday, January 13, 2026, 1:54 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

31.8°F
Light snow
Light snow
21.8°F
31.2°F
94%
SW 13.9 mph
21.1 mph
23.6°F
29.9°F
0.02 in
0%
1 mi
1015 mbar
0

Five Day Weather Forecast

Moderate or heavy snow showers
Tue
H: 35°F
L: 30°F
Heavy rain
Wed
H: 37°F
L: 27°F
Moderate or heavy snow showers
Thu
H: 10°F
L: 4°F
Moderate snow
Fri
H: 19°F
L: 2°F
Blizzard
Sat
H: 34°F
L: 25°F

Air Quality

PM2.5: 8.95 μg/m3
PM10: 9.55 μg/m3
Carbon Monoxide: 219.85 μg/m3
Nitrogen Dioxide: 11.55 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 42 μg/m3

Astronomical

Sunrise: 7:37 AM
Sun Transit: 12:12 AM
Sunset: 4:48 PM
Daylight: 9 hrs 11 mins
Moonrise: 3:27 AM
Moon Transit: 7:55 AM
Moonset: 12:19 AM
Moon Phase: Waning Crescent
Moon Illumination: 15.9%

Best Times for Fishing or Hunting

Major Periods

7:25 AM - 9:55 AM
12:00 AM - 12:00 AM

Minor Periods

11:49 AM - 1:19 PM
2:57 AM - 4:27 AM

Action Rating: 3 out of 5

Winter Weather Advisory issued January 12 at 1:37PM EST until January 13 at 7:00AM EST by NWS Buffalo NY

Effective: Mon January 12, 2026, 1:37 PM
Expires: Tue January 13, 2026, 7:00 AM

* WHAT...Lake effect snow. Additional snow accumulations 4 to 7 inches in the most persistent lake snows across the Tug Hill Plateau, and less than 3 inches for the surrounding lower elevations. Winds gusting as high as 35 mph will produce some blowing and drifting snow. * WHERE...The Eastern Lake Ontario Region. The greatest additional accumulations will be across the Tug Hill Plateau, with much lower accumulations across the lower elevations. * WHEN...Until 7 AM EST Tuesday. * IMPACTS...Travel will be difficult with snow covered roads and reduced visibility at times.

Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media.
Tuesday, January 13, 2026

Weather Forecast

Moderate or heavy snow showers
35.2°F
30°F
33.5°F
89%
0.29 in
88%
33%
24.2 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 6.93 μg/m3
PM10: 7.3 μg/m3
Carbon Monoxide: 211.53 μg/m3
Nitrogen Dioxide: 9.57 μg/m3
Sulphur Dioxide: 3.06 μg/m3
Ozone: 53.04 μg/m3

Astronomical

Sunrise: 7:37 AM
Sun Transit: 12:12 AM
Sunset: 4:48 PM
Daylight: 9 hrs 11 mins
Moonrise: 3:27 AM
Moon Transit: 7:55 AM
Moonset: 12:19 AM
Moon Phase: Waning Crescent
Moon Illumination: 15.9%

Best Times for Fishing or Hunting

Major Periods

7:25 AM - 9:55 AM
12:00 AM - 12:00 AM

Minor Periods

11:49 AM - 1:19 PM
2:57 AM - 4:27 AM

Action Rating: 3 out of 5

Wednesday, January 14, 2026

Weather Forecast

Heavy rain
36.5°F
27.3°F
34.4°F
96%
1.04 in
87%
6%
22.6 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 12.02 μg/m3
PM10: 12.4 μg/m3
Carbon Monoxide: 185.13 μg/m3
Nitrogen Dioxide: 9.07 μg/m3
Sulphur Dioxide: 5.04 μg/m3
Ozone: 47.08 μg/m3

Astronomical

Sunrise: 7:37 AM
Sun Transit: 12:12 AM
Sunset: 4:50 PM
Daylight: 9 hrs 13 mins
Moonrise: 4:32 AM
Moon Transit: 8:44 AM
Moonset: 12:53 AM
Moon Phase: Waning Crescent
Moon Illumination: 8.5%

Best Times for Fishing or Hunting

Major Periods

8:14 AM - 10:44 AM
12:00 AM - 12:00 AM

Minor Periods

12:23 AM - 1:53 PM
4:02 AM - 5:32 AM

Action Rating: 2 out of 5

Thursday, January 15, 2026

Weather Forecast

Moderate or heavy snow showers
10.2°F
4.1°F
10.7°F
72%
0.15 in
68%
21%
11.9 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 2.75 μg/m3
PM10: 2.81 μg/m3
Carbon Monoxide: 168.57 μg/m3
Nitrogen Dioxide: 6.43 μg/m3
Sulphur Dioxide: 2.2 μg/m3
Ozone: 58.64 μg/m3

Astronomical

Sunrise: 7:36 AM
Sun Transit: 12:13 AM
Sunset: 4:51 PM
Daylight: 9 hrs 15 mins
Moonrise: 5:32 AM
Moon Transit: 9:35 AM
Moonset: 1:36 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:05 AM - 11:35 AM

Minor Periods

1:06 PM - 2:36 PM
5:02 AM - 6:32 AM

Action Rating: 2 out of 5

Friday, January 16, 2026

Weather Forecast

Moderate snow
19.3°F
2.4°F
11.7°F
81%
0.05 in
82%
18%
16.6 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 2.15 μg/m3
PM10: 2.25 μg/m3
Carbon Monoxide: 169.85 μg/m3
Nitrogen Dioxide: 5.25 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 67 μg/m3

Astronomical

Sunrise: 7:35 AM
Sun Transit: 12:13 AM
Sunset: 4:52 PM
Daylight: 9 hrs 17 mins
Moonrise: 6:27 AM
Moon Transit: 10:27 AM
Moonset: 2:30 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:57 AM - 12:27 AM

Minor Periods

2:00 PM - 3:30 PM
5:57 AM - 7:27 AM

Action Rating: 3 out of 5

Saturday, January 17, 2026

Weather Forecast

Blizzard
34°F
24.8°F
28.6°F
88%
0.07 in
69%
56%
18.8 mph
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: 7:35 AM
Sun Transit: 12:13 AM
Sunset: 4:53 PM
Daylight: 9 hrs 18 mins
Moonrise: 7:13 AM
Moon Transit: 11:20 AM
Moonset: 3:32 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:20 AM - 2:50 AM
10:50 AM - 1:20 PM

Minor Periods

3:02 PM - 4:32 PM
6:43 AM - 8:13 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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