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

Current Water Temperature

61.0°F

Measurement Time: Monday, June 15, 2026, 1:00 AM 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

61.2°F
Partly cloudy
Partly cloudy
61.2°F
59.8°F
100%
W 9.2 mph
14.5 mph
58.9°F
54.3°F
0 in
75%
9 mi
1003 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Mon
H: 63°F
L: 54°F
Sunny
Tue
H: 67°F
L: 51°F
Patchy rain nearby
Wed
H: 67°F
L: 57°F
Moderate rain
Thu
H: 70°F
L: 58°F
Patchy rain nearby
Fri
H: 66°F
L: 53°F

Air Quality

AQI: 1 - Good
PM2.5: 3 μg/m3
PM10: 3.2 μg/m3
Carbon Monoxide: 118 μg/m3
Nitrogen Dioxide: 2.4 μg/m3
Sulphur Dioxide: 0.1 μg/m3
Ozone: 52 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 1:04 PM
Sunset: 8:50 PM
Daylight: 15 hrs 31 mins
Moonrise: 5:16 AM
Moon Transit: 1:43 PM
Moonset: 10:05 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

2:37 AM - 5:07 AM
1:13 PM - 3:43 PM

Minor Periods

9:35 PM - 11:05 PM
4:46 AM - 6:16 AM

Action Rating: 4 out of 5

squall watch in effect

Service Notice – April 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For Spring 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for June 2026 deployment. Data changes will appear in CAP following this deployment, 2) marine alerts will now be issued for smaller zone splits in certain areas of Atlantic and Pacific waters and 3) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – avril 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour le printemps 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement en juin 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement, 2) les alertes marines seront désormais émises pour des subdivisions de zones plus petites dans certaines régions des eaux de l’Atlantique et du Pacifique et 3) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Sun June 14, 2026, 2:00 PM
Expires: Sun June 14, 2026, 11:59 PM

Thunderstorms are expected to affect the area through early this evening. Some of these thunderstorms may be capable of producing squalls with wind gusts up to 40 knots and small hail. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.


Monday, June 15, 2026

Weather Forecast

Patchy rain nearby
63°F
54.1°F
57.7°F
80%
0.01 in
22%
0%
15.4 mph
5.2


Air Quality

AQI: 1 - Good
PM2.5: 1.19 μg/m3
PM10: 1.23 μg/m3
Carbon Monoxide: 109 μg/m3
Nitrogen Dioxide: 2.35 μg/m3
Sulphur Dioxide: 0.28 μg/m3
Ozone: 49.21 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 1:04 PM
Sunset: 8:50 PM
Daylight: 15 hrs 31 mins
Moonrise: 5:16 AM
Moon Transit: 1:43 PM
Moonset: 10:05 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

2:37 AM - 5:07 AM
1:13 PM - 3:43 PM

Minor Periods

9:35 PM - 11:05 PM
4:46 AM - 6:16 AM

Action Rating: 4 out of 5

Tuesday, June 16, 2026

Weather Forecast

Sunny
66.5°F
50.8°F
59.1°F
77%
0 in
11%
0%
14.1 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 5 μg/m3
PM10: 5.23 μg/m3
Carbon Monoxide: 119.38 μg/m3
Nitrogen Dioxide: 4.17 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 74.21 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 1:04 PM
Sunset: 8:50 PM
Daylight: 15 hrs 32 mins
Moonrise: 6:33 AM
Moon Transit: 2:48 PM
Moonset: 10:53 PM
Moon Phase: New
Moon Illumination: 1.0%

Best Times for Fishing or Hunting

Major Periods

3:44 AM - 6:14 AM
2:18 PM - 4:48 PM

Minor Periods

10:23 PM - 11:53 PM
6:03 AM - 7:33 AM

Action Rating: 3 out of 5

Wednesday, June 17, 2026

Weather Forecast

Patchy rain nearby
66.6°F
57°F
61.7°F
79%
0.12 in
71%
0%
16.3 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 4.83 μg/m3
PM10: 5.03 μg/m3
Carbon Monoxide: 119.58 μg/m3
Nitrogen Dioxide: 3.06 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 76.25 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 1:04 PM
Sunset: 8:51 PM
Daylight: 15 hrs 32 mins
Moonrise: 7:55 AM
Moon Transit: 3:49 PM
Moonset: 11:29 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

4:47 AM - 7:17 AM
3:19 PM - 5:49 PM

Minor Periods

12:00 AM - 12:00 AM
7:25 AM - 8:55 AM

Action Rating: 2 out of 5

Thursday, June 18, 2026

Weather Forecast

Moderate rain
69.8°F
57.8°F
63.9°F
83%
0.37 in
84%
0%
28.9 mph
6.4


Air Quality

AQI: 1 - Good
PM2.5: 3.61 μg/m3
PM10: 3.71 μg/m3
Carbon Monoxide: 128.46 μg/m3
Nitrogen Dioxide: 2.74 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 77.33 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 1:04 PM
Sunset: 8:51 PM
Daylight: 15 hrs 32 mins
Moonrise: 9:17 AM
Moon Transit: 4:44 PM
Moonset: 12:29 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%

Best Times for Fishing or Hunting

Major Periods

5:44 AM - 8:14 AM
4:14 PM - 6:44 PM

Minor Periods

8:47 AM - 10:17 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, June 19, 2026

Weather Forecast

Patchy rain nearby
65.6°F
52.5°F
58.3°F
82%
0.02 in
41%
0%
16.6 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 0.59 μg/m3
PM10: 0.6 μg/m3
Carbon Monoxide: 130 μg/m3
Nitrogen Dioxide: 2.26 μg/m3
Sulphur Dioxide: 0.38 μg/m3
Ozone: 72.33 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 1:05 PM
Sunset: 8:51 PM
Daylight: 15 hrs 32 mins
Moonrise: 10:35 AM
Moon Transit: 5:34 PM
Moonset: 12:56 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%

Best Times for Fishing or Hunting

Major Periods

6:36 AM - 9:06 AM
5:04 PM - 7:34 PM

Minor Periods

10:05 AM - 11:35 AM
12:00 AM - 12:00 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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