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

Current Water Temperature

71.6°F

Measurement Time: Monday, July 27, 2026, 6:12 AM EDT

Temperature Locations

View Nearby Locations     View All New York Locations     View Locations Near Me

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

63°F
Sunny
Sunny
52°F
63°F
91%
SSW 6.7 mph
12.7 mph
63°F
60.3°F
0 in
1%
6 mi
1009 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 84°F
L: 63°F
Patchy rain nearby
Tue
H: 74°F
L: 65°F
Partly Cloudy
Wed
H: 73°F
L: 63°F
Partly Cloudy
Thu
H: 82°F
L: 61°F
Sunny
Fri
H: 81°F
L: 61°F

Air Quality

AQI: 1 - Good
PM2.5: 20.8 μg/m3
PM10: 21.1 μg/m3
Carbon Monoxide: 165 μg/m3
Nitrogen Dioxide: 4.5 μg/m3
Sulphur Dioxide: 2.2 μg/m3
Ozone: 97 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:10 PM
Sunset: 8:35 PM
Daylight: 14 hrs 49 mins
Moonrise: 7:51 PM
Moon Transit: 12:00 AM
Moonset: 3:21 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:06 PM - 3:36 PM

Minor Periods

7:21 PM - 8:51 PM
2:51 AM - 4:21 AM

Action Rating: 3 out of 5

Monday, July 27, 2026

Weather Forecast

Sunny
83.7°F
63°F
72.9°F
75%
0 in
9%
0%
11.4 mph
6.7


Air Quality

AQI: 2 - Moderate
PM2.5: 20.45 μg/m3
PM10: 21.05 μg/m3
Carbon Monoxide: 161.79 μg/m3
Nitrogen Dioxide: 3.89 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 120.71 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:10 PM
Sunset: 8:35 PM
Daylight: 14 hrs 49 mins
Moonrise: 7:51 PM
Moon Transit: 12:00 AM
Moonset: 3:21 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:06 PM - 3:36 PM

Minor Periods

7:21 PM - 8:51 PM
2:51 AM - 4:21 AM

Action Rating: 3 out of 5

Tuesday, July 28, 2026

Weather Forecast

Patchy rain nearby
73.7°F
64.6°F
68.3°F
87%
0.25 in
81%
0%
11 mph
5.7


Air Quality

AQI: 1 - Good
PM2.5: 14.79 μg/m3
PM10: 15.2 μg/m3
Carbon Monoxide: 146 μg/m3
Nitrogen Dioxide: 5.08 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 75.13 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:10 PM
Sunset: 8:33 PM
Daylight: 14 hrs 47 mins
Moonrise: 8:24 PM
Moon Transit: 12:05 AM
Moonset: 4:25 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:56 PM - 4:26 PM

Minor Periods

7:54 PM - 9:24 PM
3:55 AM - 5:25 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Partly Cloudy
72.9°F
62.8°F
67°F
89%
0.05 in
69%
0%
13.2 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 4.01 μg/m3
PM10: 4.05 μg/m3
Carbon Monoxide: 171.67 μg/m3
Nitrogen Dioxide: 4.35 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 74.79 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:10 PM
Sunset: 8:32 PM
Daylight: 14 hrs 45 mins
Moonrise: 8:51 PM
Moon Transit: 12:53 AM
Moonset: 5:31 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:23 AM - 2:53 AM
2:43 PM - 5:13 PM

Minor Periods

8:21 PM - 9:51 PM
5:01 AM - 6:31 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Partly Cloudy
82.4°F
61.4°F
70.5°F
76%
0 in
10%
0%
9.4 mph
5.7


Air Quality

AQI: 1 - Good
PM2.5: 2.38 μg/m3
PM10: 2.43 μg/m3
Carbon Monoxide: 143.86 μg/m3
Nitrogen Dioxide: 2.66 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:10 PM
Sunset: 8:31 PM
Daylight: 14 hrs 42 mins
Moonrise: 9:13 PM
Moon Transit: 1:40 AM
Moonset: 6:40 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:10 AM - 3:40 AM
3:30 PM - 6:00 PM

Minor Periods

8:43 PM - 10:13 PM
6:10 AM - 7:40 AM

Action Rating: 5 out of 5

Friday, July 31, 2026

Weather Forecast

Sunny
80.5°F
61.1°F
70.2°F
75%
0 in
17%
0%
8.5 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 2.77 μg/m3
PM10: 2.81 μg/m3
Carbon Monoxide: 183.89 μg/m3
Nitrogen Dioxide: 4.26 μg/m3
Sulphur Dioxide: 0.62 μg/m3
Ozone: 46.78 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:10 PM
Sunset: 8:30 PM
Daylight: 14 hrs 40 mins
Moonrise: 9:32 PM
Moon Transit: 2:25 AM
Moonset: 7:48 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
4:12 PM - 6:42 PM

Minor Periods

9:02 PM - 10:32 PM
7:18 AM - 8:48 AM

Action Rating: 3 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.

Webcams Near Wellesley Island, NY

Sponsored Content