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

Current Water Temperature

35.4°F

Measurement Time: Friday, January 30, 2026, 6:06 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

-10.7°F
Overcast
Overcast
-24°F
-15.6°F
71%
WSW 5.6 mph
11.7 mph
-31.9°F
-30.1°F
0 in
0%
9 mi
1020 mbar
0

Five Day Weather Forecast

Light freezing rain
Fri
H: 7°F
L: -16°F
Partly Cloudy
Sat
H: 8°F
L: -9°F
Sunny
Sun
H: 14°F
L: -4°F
Sunny
Mon
H: 19°F
L: -7°F
Light snow
Tue
H: 26°F
L: 2°F

Air Quality

AQI: 1 - Good
PM2.5: 4.25 μg/m3
PM10: 4.75 μg/m3
Carbon Monoxide: 174.85 μg/m3
Nitrogen Dioxide: 2.35 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:17 AM
Sunset: 5:10 PM
Daylight: 9 hrs 47 mins
Moonrise: 2:21 PM
Moon Transit: 10:41 PM
Moonset: 6:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.4%

Best Times for Fishing or Hunting

Major Periods

11:37 AM - 2:07 PM
12:00 AM - 12:00 AM

Minor Periods

1:51 PM - 3:21 PM
5:32 AM - 7:02 AM

Action Rating: 3 out of 5

Extreme Cold Warning issued January 29 at 12:41PM EST until January 30 at 1:00PM EST by NWS Buffalo NY

Effective: Thu January 29, 2026, 12:41 PM
Expires: Fri January 30, 2026, 10:00 AM

* WHAT...Dangerously cold wind chills as low as 35 below zero expected. * WHERE...Jefferson and Lewis Counties. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Dangerously cold wind chills as low as 35 below zero will cause frostbite on exposed skin in as little as 15 minutes.

This is a potentially dangerous situation to be outdoors. If you must be outside, be sure to cover all exposed skin. Frostbite can occur in 15 minutes or less with apparent temperatures of 25 below zero or colder.
Friday, January 30, 2026

Weather Forecast

Light freezing rain
7°F
-16.1°F
-4.2°F
66%
0.01 in
61%
20%
8.1 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 4.11 μg/m3
PM10: 4.57 μg/m3
Carbon Monoxide: 167.93 μg/m3
Nitrogen Dioxide: 3.53 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 65.6 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:17 AM
Sunset: 5:10 PM
Daylight: 9 hrs 47 mins
Moonrise: 2:21 PM
Moon Transit: 10:41 PM
Moonset: 6:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.4%

Best Times for Fishing or Hunting

Major Periods

11:37 AM - 2:07 PM
12:00 AM - 12:00 AM

Minor Periods

1:51 PM - 3:21 PM
5:32 AM - 7:02 AM

Action Rating: 3 out of 5

Saturday, January 31, 2026

Weather Forecast

Partly Cloudy
7.9°F
-9.1°F
3.7°F
78%
0 in
0%
0%
5.1 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 3.25 μg/m3
PM10: 3.48 μg/m3
Carbon Monoxide: 188.89 μg/m3
Nitrogen Dioxide: 5.76 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 65.76 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 12:17 AM
Sunset: 5:12 PM
Daylight: 9 hrs 49 mins
Moonrise: 3:40 PM
Moon Transit: 11:41 PM
Moonset: 6:50 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.9%

Best Times for Fishing or Hunting

Major Periods

12:38 AM - 3:08 PM
12:00 AM - 12:00 AM

Minor Periods

3:10 PM - 4:40 PM
6:20 AM - 7:50 AM

Action Rating: 3 out of 5

Sunday, February 1, 2026

Weather Forecast

Sunny
13.8°F
-4°F
4.5°F
81%
0 in
0%
0%
11.6 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 4.2 μg/m3
PM10: 4.47 μg/m3
Carbon Monoxide: 184.05 μg/m3
Nitrogen Dioxide: 8.55 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 68.76 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 12:17 AM
Sunset: 5:13 PM
Daylight: 9 hrs 52 mins
Moonrise: 5:01 PM
Moon Transit: 12:00 AM
Moonset: 7:26 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:35 PM - 4:05 PM

Minor Periods

4:31 PM - 6:01 PM
6:56 AM - 8:26 AM

Action Rating: 4 out of 5

Monday, February 2, 2026

Weather Forecast

Sunny
18.9°F
-7°F
6.2°F
93%
0 in
0%
0%
6.9 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 2.94 μg/m3
PM10: 3.13 μg/m3
Carbon Monoxide: 169.72 μg/m3
Nitrogen Dioxide: 4.69 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 78.64 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 12:17 AM
Sunset: 5:15 PM
Daylight: 9 hrs 54 mins
Moonrise: 6:20 PM
Moon Transit: 12:35 AM
Moonset: 7:54 AM
Moon Phase: Full
Moon Illumination: 99.4%

Best Times for Fishing or Hunting

Major Periods

12:05 AM - 2:35 AM
2:27 PM - 4:57 PM

Minor Periods

5:50 PM - 7:20 PM
7:24 AM - 8:54 AM

Action Rating: 5 out of 5

Tuesday, February 3, 2026

Weather Forecast

Light snow
26.1°F
2.2°F
14.1°F
95%
0.01 in
79%
24%
5.6 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.83 μg/m3
PM10: 4.87 μg/m3
Carbon Monoxide: 210.49 μg/m3
Nitrogen Dioxide: 7.34 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 68.92 μg/m3

Astronomical

Sunrise: 7:19 AM
Sun Transit: 12:17 AM
Sunset: 5:16 PM
Daylight: 9 hrs 57 mins
Moonrise: 7:34 PM
Moon Transit: 1:26 AM
Moonset: 8:17 AM
Moon Phase: Full
Moon Illumination: 96.3%

Best Times for Fishing or Hunting

Major Periods

12:56 AM - 3:26 AM
3:15 PM - 5:45 PM

Minor Periods

7:04 PM - 8:34 PM
7:47 AM - 9:17 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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