Water Temperature of the Grand Portage River in Grand Portage, MN
Current Water Temperature
Measurement Time: Monday, May 25, 2026, 6:44 AM CDT
Temperature Locations
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Local Points of Interest
Grand Portage Bay; Lake SuperiorStation Name: GRAND PORTAGE RIVER AT GRAND PORTAGE MN
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 623 feet
Nearest Address:
1 Upper Rd
Grand Portage, MN 55605
Cook County
GPS Coordinates: 47.9634982, -89.6834233
Nearby Water Temperatures
Washington Creek, Windigo, MI (25 mi)Lake Superior, Grand Marais, MN (33.3 mi)
Grand Marais Harbor, Grand Marais, MN (33.9 mi)
Lake Superior, Lake Superior, MI (43.7 mi)
Poplar River, Lutsen, MN (52.6 mi)
Lake Superior, Calumet, MI (69.3 mi)
Pilgrim River, Houghton, MI (80.5 mi)
Baptism River, Illgen City, MN (82.8 mi)
Kawishiwi River, Ely, MN (85.7 mi)
Lake Superior, Isle Royale, MI (90.4 mi)
Keweenaw Bay, Jacobsville, MI (91.2 mi)
West Branch Ontonagon River, Bergland, MI (95.2 mi)
Presque Isle River, Tula, MI (98 mi)
Sturgeon River, Pelkie, MI (98 mi)
Falls River, L'Anse, MI (102.8 mi)
Weather for Grand Portage, Minnesota
Current Weather

Five Day Weather Forecast

Mon
H: 71°F
L: 47°F

Tue
H: 65°F
L: 53°F

Wed
H: 61°F
L: 49°F

Thu
H: 61°F
L: 46°F

Fri
H: 63°F
L: 46°F
Air Quality
Nitrogen Dioxide: 2.05 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 89 μg/m3
Astronomical
Sun Transit: 12:55 AM
Sunset: 8:43 PM
Daylight: 15 hrs 35 mins
Moon Transit: 9:01 PM
Moonset: 2:29 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%
Best Times for Fishing or Hunting
Major Periods
8:13 AM - 10:43 AM8:31 PM - 11:01 PM
Minor Periods
2:37 PM - 4:07 PM1:59 AM - 3:29 AM
Action Rating: 3 out of 5
yellow advisory - fog - 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 25, 2026, 5:54 AM
Expires: Mon May 25, 2026, 1:00 PM
Near-zero visibility in fog continues over some areas. Visibility in these areas of dense fog will gradually improve this morning, however, fog patches may linger into the early afternoon. ### Travel will likely be hazardous in some locations. Visibility will likely be suddenly reduced at times. 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.
If driving, turn on your lights, slow down and maintain a safe following distance.
yellow advisory - fog - 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 25, 2026, 8:33 AM
Expires: Mon May 25, 2026, 12:59 PM
Near-zero visibility in fog continues over some areas. Visibility in these areas of dense fog will gradually improve this morning, however, fog patches may linger into the early afternoon. ### Travel will likely be hazardous in some locations. Visibility will likely be suddenly reduced at times. 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.
If driving, turn on your lights, slow down and maintain a safe following distance.
yellow advisory - fog - 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 25, 2026, 8:33 AM
Expires: Mon May 25, 2026, 12:59 PM
Near-zero visibility in fog continues over some areas. ### Travel will likely be hazardous in some locations. Visibility will likely be suddenly reduced at times. 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.
If driving, turn on your lights, slow down and maintain a safe following distance.
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.21 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 74.44 μg/m3
Astronomical
Sun Transit: 12:55 AM
Sunset: 8:43 PM
Daylight: 15 hrs 35 mins
Moon Transit: 9:01 PM
Moonset: 2:29 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%
Best Times for Fishing or Hunting
Major Periods
8:13 AM - 10:43 AM8:31 PM - 11:01 PM
Minor Periods
2:37 PM - 4:07 PM1:59 AM - 3:29 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.88 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 81.16 μg/m3
Astronomical
Sun Transit: 12:55 AM
Sunset: 8:44 PM
Daylight: 15 hrs 36 mins
Moon Transit: 9:43 PM
Moonset: 2:43 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.9%
Best Times for Fishing or Hunting
Major Periods
8:55 AM - 11:25 AM9:13 PM - 11:43 PM
Minor Periods
3:47 PM - 5:17 PM2:13 AM - 3:43 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.69 μg/m3
Sulphur Dioxide: 1.49 μg/m3
Ozone: 68.64 μg/m3
Astronomical
Sun Transit: 12:55 AM
Sunset: 8:46 PM
Daylight: 15 hrs 38 mins
Moon Transit: 10:26 PM
Moonset: 2:59 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.7%
Best Times for Fishing or Hunting
Major Periods
9:37 AM - 12:07 AM12:00 AM - 12:00 AM
Minor Periods
4:57 PM - 6:27 PM2:29 AM - 3:59 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.07 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 63.44 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 8:47 PM
Daylight: 15 hrs 40 mins
Moon Transit: 11:11 PM
Moonset: 3:16 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.7%
Best Times for Fishing or Hunting
Major Periods
10:21 AM - 12:51 AM12:00 AM - 12:00 AM
Minor Periods
6:07 PM - 7:37 PM2:46 AM - 4:16 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.87 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 58.46 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 8:48 PM
Daylight: 15 hrs 42 mins
Moon Transit: 11:57 PM
Moonset: 3:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.4%
Best Times for Fishing or Hunting
Major Periods
11:06 AM - 1:36 PM12:00 AM - 12:00 AM
Minor Periods
7:16 PM - 8:46 PM3:06 AM - 4:36 AM
Action Rating: 4 out of 5
