Water Temperature of the Grand Portage River in Grand Portage, MN

Current Water Temperature

32.4°F

Measurement Time: Thursday, January 8, 2026, 1:15 PM CST

Temperature Locations

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Local Points of Interest

Grand Portage Bay; Lake Superior

Grand Portage River

Station 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

32.4°F
Mist
Mist
29.2°F
33.5°F
100%
NNE 3.4 mph
6.1 mph
26.7°F
32.4°F
0 in
100%
1 mi
1006 mbar
0

Five Day Weather Forecast

Mist
Thu
H: 36°F
L: 26°F
Overcast
Fri
H: 26°F
L: 22°F
Moderate snow
Sat
H: 27°F
L: 21°F
Partly Cloudy
Sun
H: 23°F
L: 13°F
Moderate or heavy snow showers
Mon
H: 31°F
L: 21°F

Air Quality

AQI: 1 - Good
PM2.5: 4.15 μg/m3
PM10: 4.25 μg/m3
Carbon Monoxide: 146.85 μg/m3
Nitrogen Dioxide: 3.15 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 70 μg/m3

Astronomical

Sunrise: 7:47 AM
Sun Transit: 12:05 AM
Sunset: 4:25 PM
Daylight: 8 hrs 38 mins
Moonrise: 11:03 PM
Moon Transit: 4:18 AM
Moonset: 10:30 AM
Moon Phase: Waning Gibbous
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

3:48 AM - 6:18 AM
4:11 PM - 6:41 PM

Minor Periods

12:00 AM - 12:00 AM
10:00 AM - 11:30 AM

Action Rating: 3 out of 5

yellow advisory - fog - 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: Thu January 8, 2026, 1:23 AM
Expires: Thu January 8, 2026, 5:06 PM

Areas of dense fog is expected or occurring. What: Near zero visibility in areas of dense fog. When: This morning. Additional Information: Areas of dense fog are expected to improve later this morning, but may linger into the afternoon for areas near the shore of Lake Superior. ### 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.

Be prepared for areas of near-zero visibility and allow extra time to reach your destination. If driving, turn on your lights, slow down and maintain a safe following distance.


Thursday, January 8, 2026

Weather Forecast

Mist
36.1°F
26.4°F
31.9°F
93%
0 in
0%
0%
11 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 7.76 μg/m3
PM10: 7.89 μg/m3
Carbon Monoxide: 195.41 μg/m3
Nitrogen Dioxide: 5.65 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 49.12 μg/m3

Astronomical

Sunrise: 7:47 AM
Sun Transit: 12:05 AM
Sunset: 4:25 PM
Daylight: 8 hrs 38 mins
Moonrise: 11:03 PM
Moon Transit: 4:18 AM
Moonset: 10:30 AM
Moon Phase: Waning Gibbous
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

3:48 AM - 6:18 AM
4:11 PM - 6:41 PM

Minor Periods

12:00 AM - 12:00 AM
10:00 AM - 11:30 AM

Action Rating: 3 out of 5

Friday, January 9, 2026

Weather Forecast

Overcast
26.2°F
21.8°F
25.7°F
87%
0 in
0%
0%
17.9 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 4.21 μg/m3
PM10: 4.59 μg/m3
Carbon Monoxide: 149.49 μg/m3
Nitrogen Dioxide: 3.27 μg/m3
Sulphur Dioxide: 1.82 μg/m3
Ozone: 72.8 μg/m3

Astronomical

Sunrise: 7:47 AM
Sun Transit: 12:05 AM
Sunset: 4:26 PM
Daylight: 8 hrs 39 mins
Moonrise: 12:03 AM
Moon Transit: 5:00 AM
Moonset: 10:44 AM
Moon Phase: Waning Gibbous
Moon Illumination: 57.8%

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
4:53 PM - 7:23 PM

Minor Periods

10:14 AM - 11:44 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Saturday, January 10, 2026

Weather Forecast

Moderate snow
27.1°F
21.2°F
25.2°F
91%
0.66 in
73%
51%
18.8 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 3.13 μg/m3
PM10: 3.51 μg/m3
Carbon Monoxide: 156.09 μg/m3
Nitrogen Dioxide: 3.03 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 72 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:06 AM
Sunset: 4:27 PM
Daylight: 8 hrs 41 mins
Moonrise: 12:13 AM
Moon Transit: 5:41 AM
Moonset: 10:58 AM
Moon Phase: Last Quarter
Moon Illumination: 46.5%

Best Times for Fishing or Hunting

Major Periods

5:11 AM - 7:41 AM
5:34 PM - 8:04 PM

Minor Periods

10:28 AM - 11:58 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Sunday, January 11, 2026

Weather Forecast

Partly Cloudy
23.2°F
12.6°F
18°F
79%
0 in
0%
0%
18.1 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 1.47 μg/m3
PM10: 1.6 μg/m3
Carbon Monoxide: 153.54 μg/m3
Nitrogen Dioxide: 1.41 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 74 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:06 AM
Sunset: 4:28 PM
Daylight: 8 hrs 43 mins
Moonrise: 1:21 AM
Moon Transit: 6:23 AM
Moonset: 11:14 AM
Moon Phase: Last Quarter
Moon Illumination: 35.3%

Best Times for Fishing or Hunting

Major Periods

5:53 AM - 8:23 AM
6:17 PM - 8:47 PM

Minor Periods

10:44 AM - 12:14 AM
12:51 AM - 2:21 AM

Action Rating: 2 out of 5

Monday, January 12, 2026

Weather Forecast

Moderate or heavy snow showers
31.3°F
20.5°F
26.4°F
91%
0.09 in
64%
15%
11.9 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 2.28 μg/m3
PM10: 2.73 μg/m3
Carbon Monoxide: 166.98 μg/m3
Nitrogen Dioxide: 1.89 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 74.15 μg/m3

Astronomical

Sunrise: 7:45 AM
Sun Transit: 12:07 AM
Sunset: 4:30 PM
Daylight: 8 hrs 45 mins
Moonrise: 2:31 AM
Moon Transit: 7:06 AM
Moonset: 11:34 AM
Moon Phase: Last Quarter
Moon Illumination: 25.0%

Best Times for Fishing or Hunting

Major Periods

6:36 AM - 9:06 AM
7:02 PM - 9:32 PM

Minor Periods

11:04 AM - 12:34 AM
2:01 AM - 3:31 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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