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

Current Water Temperature

46.8°F

Measurement Time: Tuesday, May 5, 2026, 5:42 PM EDT

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

63°F
Sunny
Sunny
63°F
68.4°F
59%
WSW 11.2 mph
19.7 mph
67.5°F
52.8°F
0 in
0%
6 mi
1005 mbar
0.2

Five Day Weather Forecast

Patchy rain nearby
Tue
H: 73°F
L: 47°F
Moderate rain
Wed
H: 48°F
L: 43°F
Patchy rain nearby
Thu
H: 50°F
L: 37°F
Patchy rain nearby
Fri
H: 51°F
L: 38°F
Moderate rain
Sat
H: 54°F
L: 44°F

Air Quality

AQI: 1 - Good
PM2.5: 9.05 μg/m3
PM10: 10.35 μg/m3
Carbon Monoxide: 172.85 μg/m3
Nitrogen Dioxide: 6.75 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:00 PM
Sunset: 8:13 PM
Daylight: 14 hrs 24 mins
Moonrise: 12:44 AM
Moon Transit: 3:45 AM
Moonset: 7:47 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.8%

Best Times for Fishing or Hunting

Major Periods

3:15 AM - 5:45 AM
5:37 PM - 8:07 PM

Minor Periods

7:17 AM - 8:47 AM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Wind Advisory issued May 5 at 2:09AM EDT until May 5 at 8:00PM EDT by NWS Burlington VT

Effective: Tue May 5, 2026, 2:09 AM
Expires: Tue May 5, 2026, 5:00 PM

* WHAT...Southwest winds 15 to 30 mph with gusts up to 50 mph expected. * WHERE...Clinton, Franklin, Northern St. Lawrence, Southwestern St. Lawrence, and Western Essex Counties. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...The strongest period of winds are expected between noon and 5 PM today.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.


Wind Advisory issued May 5 at 2:06PM EDT until May 5 at 8:00PM EDT by NWS Burlington VT

Effective: Tue May 5, 2026, 2:06 PM
Expires: Tue May 5, 2026, 8:00 PM

* WHAT...Southwest winds 15 to 30 mph with gusts up to 50 mph expected. * WHERE...Eastern Clinton, Northern Franklin, Northern St. Lawrence, Southern Franklin, Southwestern St. Lawrence, Western Clinton, and Western Essex Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...The strongest period of winds are expected between noon and 5 PM today.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.
Tuesday, May 5, 2026

Weather Forecast

Patchy rain nearby
72.5°F
47.3°F
61.4°F
62%
0.11 in
88%
0%
22.4 mph
2.1


Air Quality

AQI: 1 - Good
PM2.5: 7.29 μg/m3
PM10: 7.74 μg/m3
Carbon Monoxide: 168.25 μg/m3
Nitrogen Dioxide: 4.25 μg/m3
Sulphur Dioxide: 2.85 μg/m3
Ozone: 91.52 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:00 PM
Sunset: 8:13 PM
Daylight: 14 hrs 24 mins
Moonrise: 12:44 AM
Moon Transit: 3:45 AM
Moonset: 7:47 AM
Moon Phase: Waning Gibbous
Moon Illumination: 79.8%

Best Times for Fishing or Hunting

Major Periods

3:15 AM - 5:45 AM
5:37 PM - 8:07 PM

Minor Periods

7:17 AM - 8:47 AM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Wednesday, May 6, 2026

Weather Forecast

Moderate rain
48.4°F
42.5°F
44.6°F
89%
0.74 in
90%
0%
11.4 mph
6.1


Air Quality

AQI: 1 - Good
PM2.5: 4.18 μg/m3
PM10: 4.59 μg/m3
Carbon Monoxide: 154.21 μg/m3
Nitrogen Dioxide: 5.24 μg/m3
Sulphur Dioxide: 1.13 μg/m3
Ozone: 60.92 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:00 PM
Sunset: 8:14 PM
Daylight: 14 hrs 27 mins
Moonrise: 12:34 AM
Moon Transit: 4:37 AM
Moonset: 8:43 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.0%

Best Times for Fishing or Hunting

Major Periods

4:07 AM - 6:37 AM
6:28 PM - 8:58 PM

Minor Periods

8:13 AM - 9:43 AM
12:04 AM - 1:34 AM

Action Rating: 2 out of 5

Thursday, May 7, 2026

Weather Forecast

Patchy rain nearby
49.7°F
36.5°F
44.1°F
69%
0.01 in
88%
0%
17.2 mph
5.2


Air Quality

AQI: 1 - Good
PM2.5: 2.33 μg/m3
PM10: 2.51 μg/m3
Carbon Monoxide: 146.77 μg/m3
Nitrogen Dioxide: 3.65 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 67.16 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:00 PM
Sunset: 8:15 PM
Daylight: 14 hrs 29 mins
Moonrise: 1:14 AM
Moon Transit: 5:27 AM
Moonset: 9:45 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.1%

Best Times for Fishing or Hunting

Major Periods

4:57 AM - 7:27 AM
7:18 PM - 9:48 PM

Minor Periods

9:15 AM - 10:45 AM
12:44 AM - 2:14 AM

Action Rating: 2 out of 5

Friday, May 8, 2026

Weather Forecast

Patchy rain nearby
50.7°F
37.7°F
43.7°F
80%
0.06 in
83%
0%
14.8 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 2.59 μg/m3
PM10: 2.68 μg/m3
Carbon Monoxide: 143.63 μg/m3
Nitrogen Dioxide: 2.86 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 72.88 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:00 PM
Sunset: 8:16 PM
Daylight: 14 hrs 32 mins
Moonrise: 1:48 AM
Moon Transit: 6:16 AM
Moonset: 10:51 AM
Moon Phase: Last Quarter
Moon Illumination: 47.9%

Best Times for Fishing or Hunting

Major Periods

5:46 AM - 8:16 AM
8:05 PM - 10:35 PM

Minor Periods

10:21 AM - 11:51 AM
1:18 AM - 2:48 AM

Action Rating: 4 out of 5

Saturday, May 9, 2026

Weather Forecast

Moderate rain
53.9°F
44.4°F
47.6°F
89%
0.43 in
89%
0%
12.8 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 11.21 μg/m3
PM10: 11.32 μg/m3
Carbon Monoxide: 180.1 μg/m3
Nitrogen Dioxide: 6.93 μg/m3
Sulphur Dioxide: 2.03 μg/m3
Ozone: 63.23 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 1:00 PM
Sunset: 8:18 PM
Daylight: 14 hrs 34 mins
Moonrise: 2:15 AM
Moon Transit: 7:02 AM
Moonset: 12:00 AM
Moon Phase: Last Quarter
Moon Illumination: 36.7%

Best Times for Fishing or Hunting

Major Periods

6:32 AM - 9:02 AM
8:51 PM - 11:21 PM

Minor Periods

11:30 AM - 1:00 PM
1:45 AM - 3:15 AM

Action Rating: 2 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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