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

Current Water Temperature

32.0°F

Measurement Time: Thursday, May 28, 2026, 8:22 AM CDT

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

65.6°F
Sunny
Sunny
65.5°F
65.6°F
40%
S 7.2 mph
9.8 mph
65.5°F
41°F
0 in
0%
6 mi
1025 mbar
7.4

Five Day Weather Forecast

Sunny
Thu
H: 68°F
L: 49°F
Patchy rain nearby
Fri
H: 77°F
L: 53°F
Moderate rain
Sat
H: 52°F
L: 46°F
Patchy rain nearby
Sun
H: 59°F
L: 48°F
Patchy rain nearby
Mon
H: 60°F
L: 46°F

Air Quality

AQI: 1 - Good
PM2.5: 4.65 μg/m3
PM10: 5.05 μg/m3
Carbon Monoxide: 116.85 μg/m3
Nitrogen Dioxide: 3.05 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 65 μg/m3

Astronomical

Sunrise: 5:06 AM
Sun Transit: 12:56 AM
Sunset: 8:47 PM
Daylight: 15 hrs 40 mins
Moonrise: 6:37 PM
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 AM
12:00 AM - 12:00 AM

Minor Periods

6:07 PM - 7:37 PM
2:46 AM - 4:16 AM

Action Rating: 2 out of 5

Special Weather Statement issued May 28 at 3:26AM CDT by NWS Duluth MN

Effective: Thu May 28, 2026, 3:26 AM
Expires: Thu May 28, 2026, 11:00 AM

Dry conditions with relative humidity values between 20 and 25 percent are forecast this afternoon and early evening for portions areas of northeast Minnesota north of a line from near International Falls to Bigfork to near Ely to Gunflint Lake. East winds of 5 to 10 mph with gusts up to 15 mph are forecast. Together, these conditions may cause fires to spread. Check burning restrictions and fire danger before burning. For more information on burning restrictions for Minnesota, see www.dnr.state.mn.us/forestry/fire/firerating_restrictions.html.


Thursday, May 28, 2026

Weather Forecast

Sunny
68.2°F
49.1°F
57.6°F
52%
0 in
0%
0%
7.2 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 5.89 μg/m3
PM10: 6.54 μg/m3
Carbon Monoxide: 115.61 μg/m3
Nitrogen Dioxide: 2.8 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 64.84 μg/m3

Astronomical

Sunrise: 5:06 AM
Sun Transit: 12:56 AM
Sunset: 8:47 PM
Daylight: 15 hrs 40 mins
Moonrise: 6:37 PM
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 AM
12:00 AM - 12:00 AM

Minor Periods

6:07 PM - 7:37 PM
2:46 AM - 4:16 AM

Action Rating: 2 out of 5

Friday, May 29, 2026

Weather Forecast

Patchy rain nearby
77°F
52.9°F
61.8°F
79%
0.14 in
87%
0%
9.4 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 4.39 μg/m3
PM10: 4.83 μg/m3
Carbon Monoxide: 121.65 μg/m3
Nitrogen Dioxide: 2.71 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 66.52 μg/m3

Astronomical

Sunrise: 5:06 AM
Sun Transit: 12:56 AM
Sunset: 8:48 PM
Daylight: 15 hrs 42 mins
Moonrise: 7:46 PM
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 PM
12:00 AM - 12:00 AM

Minor Periods

7:16 PM - 8:46 PM
3:06 AM - 4:36 AM

Action Rating: 4 out of 5

Saturday, May 30, 2026

Weather Forecast

Moderate rain
51.9°F
46.1°F
49.3°F
78%
0.25 in
85%
0%
7.8 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 3.53 μg/m3
PM10: 3.8 μg/m3
Carbon Monoxide: 113.29 μg/m3
Nitrogen Dioxide: 1.83 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 80.04 μg/m3

Astronomical

Sunrise: 5:05 AM
Sun Transit: 12:56 AM
Sunset: 8:49 PM
Daylight: 15 hrs 44 mins
Moonrise: 8:53 PM
Moon Transit: 12:00 AM
Moonset: 4:03 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:54 AM - 2:24 PM

Minor Periods

8:23 PM - 9:53 PM
3:33 AM - 5:03 AM

Action Rating: 5 out of 5

Sunday, May 31, 2026

Weather Forecast

Patchy rain nearby
58.5°F
47.5°F
53.8°F
69%
0.02 in
86%
0%
11.2 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 3.58 μg/m3
PM10: 4.19 μg/m3
Carbon Monoxide: 109 μg/m3
Nitrogen Dioxide: 2.42 μg/m3
Sulphur Dioxide: 1.47 μg/m3
Ozone: 66.16 μg/m3

Astronomical

Sunrise: 5:04 AM
Sun Transit: 12:56 AM
Sunset: 8:50 PM
Daylight: 15 hrs 45 mins
Moonrise: 9:54 PM
Moon Transit: 12:47 AM
Moonset: 4:37 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:17 AM - 2:47 AM
12:45 AM - 3:15 PM

Minor Periods

9:24 PM - 10:54 PM
4:07 AM - 5:37 AM

Action Rating: 3 out of 5

Monday, June 1, 2026

Weather Forecast

Patchy rain nearby
59.7°F
45.6°F
56°F
72%
0.03 in
85%
0%
12.8 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 4.17 μg/m3
PM10: 5.08 μg/m3
Carbon Monoxide: 129.43 μg/m3
Nitrogen Dioxide: 2.6 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 72 μg/m3

Astronomical

Sunrise: 5:03 AM
Sun Transit: 12:56 AM
Sunset: 8:50 PM
Daylight: 15 hrs 47 mins
Moonrise: 10:47 PM
Moon Transit: 1:37 AM
Moonset: 5:20 AM
Moon Phase: Full
Moon Illumination: 96.8%

Best Times for Fishing or Hunting

Major Periods

1:07 AM - 3:37 AM
1:36 PM - 4:06 PM

Minor Periods

10:17 PM - 11:47 PM
4:50 AM - 6:20 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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