Water Temperature of the St. Marys River in Sault Ste. Marie, MI
Current Water Temperature
Measurement Time: Monday, May 18, 2026, 8:00 PM EDT
Temperature Locations
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Local Points of Interest
Rotary Park; Rotary Island; Steers Island; Island Number One; Sault Sainte MarieStation Name: Little Rapids
Data Source: NOAA Tides and Currents
Elevation Above Sea Level: 568 feet
Sensor Depth: -8 feet
Nearest Address:
1425 Riverside Dr
Sault Ste. Marie, MI 49783
Chippewa County
GPS Coordinates: 46.485832, -84.301666
Nearby Water Temperatures
St. Marys River, Sault Ste. Marie, MI (3.5 mi)St. Marys River, Barbeau, MI (14.5 mi)
St. Marys River, Barbeau, MI (16.2 mi)
Lake Huron, De Tour Village, MI (39.2 mi)
Lake Huron, Bois Blanc Island, MI (49.9 mi)
Straits of Mackinac, Mackinaw City, MI (50.9 mi)
Seul Choix Bay, Port Inland, MI (83.1 mi)
Little Traverse Bay, Petoskey, MI (83.7 mi)
Lake Huron, Alpena, MI (105.3 mi)
Miners River, Munising, MI (106.5 mi)
Thunder Bay River, Alpena, MI (106.9 mi)
Lake Huron, Alpena, MI (114.8 mi)
North Branch Au Sable River, Grayling, MI (122.4 mi)
Au Sable River, Luzerne, MI (125 mi)
Au Sable River, Mio, MI (126.4 mi)
Weather for Sault Ste. Marie, Michigan
Current Weather

Five Day Weather Forecast

Mon
H: 70°F
L: 50°F

Tue
H: 61°F
L: 39°F

Wed
H: 43°F
L: 33°F

Thu
H: 58°F
L: 31°F

Fri
H: 63°F
L: 37°F
Air Quality
Nitrogen Dioxide: 5.25 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 84 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 9:08 PM
Daylight: 15 hrs 8 mins
Moon Transit: 3:33 PM
Moonset: 12:01 AM
Moon Phase: New
Moon Illumination: 2.6%
Best Times for Fishing or Hunting
Major Periods
3:17 AM - 5:47 AM3:03 PM - 5:33 PM
Minor Periods
6:26 AM - 7:56 AM12:00 AM - 12:00 AM
Action Rating: 5 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: Mon May 18, 2026, 11:24 AM
Expires: Tue May 19, 2026, 2:00 AM
Conditions are favourable for the development of squalls with wind gusts up to 45 knots and hail. Thunderstorms are expected to move eastward across the area this afternoon into this evening. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway.
squall warning 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: Mon May 18, 2026, 3:55 PM
Expires: Mon May 18, 2026, 6:54 PM
Squalls with wind gusts up to 45 knots and hail up to 3 centimetres are expected or occurring in the area. As of 3:50 p.m. EDT, an area of thunderstorms is located near Great Duck Island, moving northeastward at 40 knots. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.
squall warning 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: Mon May 18, 2026, 3:55 PM
Expires: Mon May 18, 2026, 6:54 PM
Squalls with wind gusts up to 45 knots and hail up to 3 centimetres are expected or occurring in the area. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.83 μg/m3
Sulphur Dioxide: 1.4 μg/m3
Ozone: 78.96 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 9:08 PM
Daylight: 15 hrs 8 mins
Moon Transit: 3:33 PM
Moonset: 12:01 AM
Moon Phase: New
Moon Illumination: 2.6%
Best Times for Fishing or Hunting
Major Periods
3:17 AM - 5:47 AM3:03 PM - 5:33 PM
Minor Periods
6:26 AM - 7:56 AM12:00 AM - 12:00 AM
Action Rating: 5 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.64 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 73.12 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 9:09 PM
Daylight: 15 hrs 10 mins
Moon Transit: 4:39 PM
Moonset: 12:11 AM
Moon Phase: Waxing Crescent
Moon Illumination: 7.4%
Best Times for Fishing or Hunting
Major Periods
4:24 AM - 6:54 AM4:09 PM - 6:39 PM
Minor Periods
7:35 AM - 9:05 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.57 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 72.4 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 9:10 PM
Daylight: 15 hrs 12 mins
Moon Transit: 5:41 PM
Moonset: 1:04 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%
Best Times for Fishing or Hunting
Major Periods
5:28 AM - 7:58 AM5:11 PM - 7:41 PM
Minor Periods
8:54 AM - 10:24 AM12:34 AM - 2:04 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.29 μg/m3
Sulphur Dioxide: 1.62 μg/m3
Ozone: 68.6 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 9:11 PM
Daylight: 15 hrs 15 mins
Moon Transit: 6:37 PM
Moonset: 1:42 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%
Best Times for Fishing or Hunting
Major Periods
6:27 AM - 8:57 AM6:07 PM - 8:37 PM
Minor Periods
10:17 AM - 11:47 AM1:12 AM - 2:42 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.2 μg/m3
Sulphur Dioxide: 1.28 μg/m3
Ozone: 69 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 9:12 PM
Daylight: 15 hrs 17 mins
Moon Transit: 7:28 PM
Moonset: 2:11 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%
Best Times for Fishing or Hunting
Major Periods
7:20 AM - 9:50 AM6:58 PM - 9:28 PM
Minor Periods
11:37 AM - 1:07 PM1:41 AM - 3:11 AM
Action Rating: 3 out of 5
