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

Current Water Temperature

46.8°F

Measurement Time: Sunday, November 30, 2025, 1:54 PM EST

Temperature Locations

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Local Points of Interest

Coast Guard Station Alexandria Bay; Keewaydin State Park

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St. Lawrence River

Station Name: Alexandria Bay
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 240 feet / 73 meters

Sensor Depth: -1.8 feet / -0.6 meters

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 (115.0 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

33.3°F
Patchy light snow
Conditions: Patchy light snow
Humidity: 91%
Feels Like: 20.5°F
Wind: SSW 24.2 mph
Wind Gusts: 32.7 mph
Pressure: 29.86 in
Precipitation: 0.02 in
Cloud Cover: 0%
Visibility: 0 mi
UV Index: 0.4

Five Day Weather Forecast

Patchy light snow
Sun
H: 37°F
L: 29°F
Moderate or heavy snow showers
Mon
H: 29°F
L: 23°F
Heavy snow
Tue
H: 29°F
L: 24°F
Patchy moderate snow
Wed
H: 35°F
L: 21°F
Heavy snow
Thu
H: 33°F
L: 14°F

Air Quality

AQI: 1 - Good
PM2.5: 5.95 μg/m3
PM10: 6.05 μg/m3
Carbon Monoxide: 167.85 μg/m3
Nitrogen Dioxide: 6.85 μg/m3
Sulphur Dioxide: 2.75 μg/m3
Ozone: 62 μg/m3

Astronomical

Sunrise: 7:19 AM
Sun Transit: 11:52 AM
Sunset: 4:26 PM
Daylight: 9 hrs 8 mins
Moonrise: 1:35 PM
Moon Transit: 8:11 PM
Moonset: 1:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:41 PM - 10:11 PM

Minor Periods

1:05 PM - 2:35 PM
1:16 AM - 2:46 AM

Action Rating: 2 out of 5

special weather statement in effect

Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) 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 – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) 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: Sat November 29, 2025, 5:41 PM
Expires: Sun November 30, 2025, 9:41 AM

Significant snow and strong winds expected Sunday. What: Total snowfall amounts of 5 to 10 cm leading to challenging travel conditions. Strong southwest winds with gusts of 80 km/h possible. When: Snow will begin overnight and taper off Sunday afternoon. Strong winds will begin Sunday morning and ease late in the evening as winds become more northwesterly. Additional Information: On Sunday afternoon, snow is expected to mix with or transition over to rain in most areas. If the precipitation remains as snow, then accumulations may reach or possibly exceed 10 cm. Local utility outages are possible. Roads and walkways will likely be difficult to navigate due to accumulating snow. ### Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.


special weather statement in effect

Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) 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 – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) 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 November 30, 2025, 5:29 AM
Expires: Sun November 30, 2025, 9:29 PM

Strong winds expected today. What: Strong southwest winds with gusts of 80 km/h possible. When: Strong winds will begin later this afternoon and ease late this evening as winds become more northwesterly. Additional Information: Snow is still expected for today, however accumulations are not expected to be significant with 2 to 4 cm possible. Strong winds are expected to develop early this afternoon. Local utility outages are possible. Roads and walkways will likely be difficult to navigate due to accumulating snow. ### Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.


Sunday, November 30, 2025

Weather Forecast

Conditions: Patchy light snow
Average Temperature: 32.4°F
Average Humidity: 88%
Chance of Rain: 89%
Wind: 27.3 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 5.01 μg/m3
PM10: 5.24 μg/m3
Carbon Monoxide: 163.09 μg/m3
Nitrogen Dioxide: 5.86 μg/m3
Sulphur Dioxide: 2.29 μg/m3
Ozone: 72.88 μg/m3

Astronomical

Sunrise: 7:19 AM
Sun Transit: 11:52 AM
Sunset: 4:26 PM
Daylight: 9 hrs 8 mins
Moonrise: 1:35 PM
Moon Transit: 8:11 PM
Moonset: 1:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:41 PM - 10:11 PM

Minor Periods

1:05 PM - 2:35 PM
1:16 AM - 2:46 AM

Action Rating: 2 out of 5

Monday, December 1, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 27.3°F
Average Humidity: 70%
Chance of Rain: 85%
Wind: 19.7 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 1.85 μg/m3
PM10: 1.9 μg/m3
Carbon Monoxide: 152.45 μg/m3
Nitrogen Dioxide: 3.99 μg/m3
Sulphur Dioxide: 1.64 μg/m3
Ozone: 71.72 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 11:52 AM
Sunset: 4:26 PM
Daylight: 9 hrs 6 mins
Moonrise: 1:58 PM
Moon Transit: 9:02 PM
Moonset: 3:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

10:03 AM - 12:33 AM
8:32 PM - 11:02 PM

Minor Periods

1:28 PM - 2:58 PM
2:33 AM - 4:03 AM

Action Rating: 2 out of 5

Tuesday, December 2, 2025

Weather Forecast

Conditions: Heavy snow
Average Temperature: 27°F
Average Humidity: 87%
Chance of Rain: 86%
Wind: 11.4 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 4.28 μg/m3
PM10: 4.38 μg/m3
Carbon Monoxide: 164.01 μg/m3
Nitrogen Dioxide: 6.26 μg/m3
Sulphur Dioxide: 2.25 μg/m3
Ozone: 76.64 μg/m3

Astronomical

Sunrise: 7:21 AM
Sun Transit: 11:53 AM
Sunset: 4:26 PM
Daylight: 9 hrs 5 mins
Moonrise: 2:25 PM
Moon Transit: 10:00 PM
Moonset: 4:25 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.7%

Best Times for Fishing or Hunting

Major Periods

10:57 AM - 1:27 PM
12:00 AM - 12:00 AM

Minor Periods

1:55 PM - 3:25 PM
3:55 AM - 5:25 AM

Action Rating: 2 out of 5

Wednesday, December 3, 2025

Weather Forecast

Conditions: Patchy moderate snow
Average Temperature: 29.3°F
Average Humidity: 85%
Chance of Rain: 82%
Wind: 23.3 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 5.07 μg/m3
PM10: 5.11 μg/m3
Carbon Monoxide: 182.54 μg/m3
Nitrogen Dioxide: 9.2 μg/m3
Sulphur Dioxide: 2.36 μg/m3
Ozone: 63.48 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 11:53 AM
Sunset: 4:25 PM
Daylight: 9 hrs 4 mins
Moonrise: 2:59 PM
Moon Transit: 11:00 PM
Moonset: 5:50 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.1%

Best Times for Fishing or Hunting

Major Periods

11:56 AM - 2:26 PM
12:00 AM - 12:00 AM

Minor Periods

2:29 PM - 3:59 PM
5:20 AM - 6:50 AM

Action Rating: 3 out of 5

Thursday, December 4, 2025

Weather Forecast

Conditions: Heavy snow
Average Temperature: 30.7°F
Average Humidity: 93%
Chance of Rain: 64%
Wind: 19.5 mph
UV Index: 1

Air Quality

AQI: 1 - Good
PM2.5: 2.63 μg/m3
PM10: 2.68 μg/m3
Carbon Monoxide: 185.98 μg/m3
Nitrogen Dioxide: 5.32 μg/m3
Sulphur Dioxide: 1.97 μg/m3
Ozone: 73.69 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 11:54 AM
Sunset: 4:25 PM
Daylight: 9 hrs 2 mins
Moonrise: 3:46 PM
Moon Transit: 12:00 AM
Moonset: 7:16 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:01 PM - 3:31 PM

Minor Periods

3:16 PM - 4:46 PM
6:46 AM - 8:16 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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