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

Current Water Temperature

35.4°F

Measurement Time: Monday, January 26, 2026, 5:36 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

2.1°F
Light freezing rain
Light freezing rain
-13.2°F
4.3°F
82%
NNE 9.8 mph
14.9 mph
-10.4°F
0.4°F
0 in
0%
1 mi
1013 mbar
0

Five Day Weather Forecast

Light freezing rain
Mon
H: 14°F
L: 3°F
Overcast
Tue
H: 18°F
L: 0°F
Partly Cloudy
Wed
H: 21°F
L: -0°F
Light snow
Thu
H: 13°F
L: -6°F
Mist
Fri
H: 9°F
L: -18°F

Air Quality

AQI: 1 - Good
PM2.5: 9.75 μg/m3
PM10: 11.05 μg/m3
Carbon Monoxide: 226.85 μg/m3
Nitrogen Dioxide: 8.65 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 61 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 12:16 AM
Sunset: 5:05 PM
Daylight: 9 hrs 37 mins
Moonrise: 10:52 AM
Moon Transit: 6:31 PM
Moonset: 1:07 AM
Moon Phase: First Quarter
Moon Illumination: 57.1%

Best Times for Fishing or Hunting

Major Periods

7:31 AM - 10:01 AM
6:01 PM - 8:31 PM

Minor Periods

10:22 AM - 11:52 AM
12:37 AM - 2:07 AM

Action Rating: 3 out of 5

yellow warning - snowfall - 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 January 25, 2026, 11:57 AM
Expires: Mon January 26, 2026, 3:57 AM

Snow, at times heavy, this afternoon through Monday morning. What: Snowfall amounts of 15 to 30 cm. Reduced visibility in heavy snow and local blowing snow. When: This afternoon through Monday morning. Additional information: Snow will taper to periods of light snow or flurries from west to east through Monday morning. The Monday morning commute may be impacted. Northeasterly winds gusting 40 to 50 km/h may result in local blowing snow, particularly for exposed areas. ### Travel will likely be challenging. 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. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.

Allow extra time for travel. Take frequent breaks and avoid strain when clearing snow.


yellow warning - snowfall - 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 January 25, 2026, 5:19 PM
Expires: Mon January 26, 2026, 9:19 AM

Snow, at times heavy, tonight through Monday morning. What: Snowfall amounts of 15 to 30 cm. Reduced visibility in heavy snow and local blowing snow. When: Continuing through Monday morning. Additional information: Snow will taper to periods of light snow or flurries from west to east through Monday morning. The Monday morning commute may be impacted. Northeasterly winds gusting 40 to 50 km/h may result in local blowing snow, particularly for exposed areas. ### Travel will likely be challenging. 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. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.

Allow extra time for travel. Take frequent breaks and avoid strain when clearing snow.


yellow warning - snowfall - 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 January 25, 2026, 5:19 PM
Expires: Mon January 26, 2026, 9:19 AM

Snow, at times heavy, tonight through Monday morning. What: Snowfall amounts of 15 to 30 cm. Reduced visibility in heavy snow and local blowing snow. When: Continuing through Monday morning. Additional information: Snow will taper to periods of light snow or flurries from west to east through Monday morning. The Monday morning commute may be impacted. Northeasterly winds gusting 40 to 50 km/h may result in local blowing snow, particularly for exposed areas. ### Travel will likely be challenging. 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. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.

Allow extra time for travel. Take frequent breaks and avoid strain when clearing snow.


yellow warning - snowfall - 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: Mon January 26, 2026, 2:50 AM
Expires: Mon January 26, 2026, 2:03 PM

Snow, at times heavy, through this morning. What: Snowfall amounts of 15 to 25 cm. Reduced visibility in heavy snow and local blowing snow. When: Continuing through this morning. Additional information: Snow will taper to periods of light snow or flurries from west to east through this morning. The morning commute may be impacted. Northeasterly winds gusting 40 to 50 km/h may result in local blowing snow, particularly for exposed areas. ### Travel will likely be challenging. 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. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.

Allow extra time for travel. Take frequent breaks and avoid strain when clearing snow.


Monday, January 26, 2026

Weather Forecast

Light freezing rain
14°F
2.5°F
7.5°F
83%
0.21 in
86%
71%
13.9 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 8.77 μg/m3
PM10: 9.91 μg/m3
Carbon Monoxide: 240.53 μg/m3
Nitrogen Dioxide: 10.68 μg/m3
Sulphur Dioxide: 1.86 μg/m3
Ozone: 59.84 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 12:16 AM
Sunset: 5:05 PM
Daylight: 9 hrs 37 mins
Moonrise: 10:52 AM
Moon Transit: 6:31 PM
Moonset: 1:07 AM
Moon Phase: First Quarter
Moon Illumination: 57.1%

Best Times for Fishing or Hunting

Major Periods

7:31 AM - 10:01 AM
6:01 PM - 8:31 PM

Minor Periods

10:22 AM - 11:52 AM
12:37 AM - 2:07 AM

Action Rating: 3 out of 5

Tuesday, January 27, 2026

Weather Forecast

Overcast
18.1°F
0.3°F
11.8°F
86%
0 in
0%
0%
18.1 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 5.4 μg/m3
PM10: 5.71 μg/m3
Carbon Monoxide: 198.45 μg/m3
Nitrogen Dioxide: 5.55 μg/m3
Sulphur Dioxide: 1.67 μg/m3
Ozone: 72.04 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:16 AM
Sunset: 5:06 PM
Daylight: 9 hrs 40 mins
Moonrise: 11:26 AM
Moon Transit: 7:30 PM
Moonset: 2:27 AM
Moon Phase: First Quarter
Moon Illumination: 68.0%

Best Times for Fishing or Hunting

Major Periods

8:27 AM - 10:57 AM
7:00 PM - 9:30 PM

Minor Periods

10:56 AM - 12:26 AM
1:57 AM - 3:27 AM

Action Rating: 2 out of 5

Wednesday, January 28, 2026

Weather Forecast

Partly Cloudy
21.4°F
-0°F
11.2°F
86%
0 in
0%
0%
5.4 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 11.79 μg/m3
PM10: 11.99 μg/m3
Carbon Monoxide: 236.93 μg/m3
Nitrogen Dioxide: 9.37 μg/m3
Sulphur Dioxide: 1.86 μg/m3
Ozone: 59.88 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:16 AM
Sunset: 5:08 PM
Daylight: 9 hrs 42 mins
Moonrise: 12:11 AM
Moon Transit: 8:32 PM
Moonset: 3:47 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%

Best Times for Fishing or Hunting

Major Periods

9:28 AM - 11:58 AM
8:02 PM - 10:32 PM

Minor Periods

11:41 AM - 1:11 PM
3:17 AM - 4:47 AM

Action Rating: 2 out of 5

Thursday, January 29, 2026

Weather Forecast

Light snow
13.2°F
-6.4°F
8.4°F
91%
0.04 in
69%
51%
8.1 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 6.21 μg/m3
PM10: 6.31 μg/m3
Carbon Monoxide: 203.47 μg/m3
Nitrogen Dioxide: 7.56 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 64.6 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 12:16 AM
Sunset: 5:09 PM
Daylight: 9 hrs 44 mins
Moonrise: 1:09 PM
Moon Transit: 9:37 PM
Moonset: 5:00 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.7%

Best Times for Fishing or Hunting

Major Periods

10:32 AM - 1:02 PM
9:07 PM - 11:37 PM

Minor Periods

12:39 AM - 2:09 PM
4:30 AM - 6:00 AM

Action Rating: 2 out of 5

Friday, January 30, 2026

Weather Forecast

Mist
9°F
-17.8°F
-5°F
94%
0.01 in
68%
33%
8.3 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.8 μg/m3
PM10: 2.97 μg/m3
Carbon Monoxide: 174.85 μg/m3
Nitrogen Dioxide: 3.06 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 71 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

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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