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

Current Water Temperature

32.0°F

Measurement Time: Tuesday, July 7, 2026, 7:48 PM 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

70°F
Patchy rain nearby
Patchy rain nearby
58.1°F
75.8°F
52%
NW 8.3 mph
15.1 mph
70°F
51.4°F
0 in
77%
6 mi
1015 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Wed
H: 71°F
L: 58°F
Sunny
Thu
H: 70°F
L: 56°F
Sunny
Fri
H: 69°F
L: 58°F
Patchy rain nearby
Sat
H: 74°F
L: 57°F
Patchy rain nearby
Sun
H: 80°F
L: 62°F

Air Quality

AQI: 1 - Good
PM2.5: 5.4 μg/m3
PM10: 5.6 μg/m3
Carbon Monoxide: 96 μg/m3
Nitrogen Dioxide: 1.3 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 72 μg/m3

Astronomical

Sunrise: 5:09 AM
Sun Transit: 1:03 PM
Sunset: 8:59 PM
Daylight: 15 hrs 50 mins
Moonrise: 12:13 AM
Moon Transit: 7:20 AM
Moonset: 2:46 PM
Moon Phase: Last Quarter
Moon Illumination: 26.8%

Best Times for Fishing or Hunting

Major Periods

6:50 AM - 9:20 AM
7:18 PM - 9:48 PM

Minor Periods

2:16 PM - 3:46 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 8, 2026

Weather Forecast

Patchy rain nearby
70.7°F
57.5°F
65.5°F
75%
0.13 in
69%
0%
8.7 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 5.16 μg/m3
PM10: 5.65 μg/m3
Carbon Monoxide: 113 μg/m3
Nitrogen Dioxide: 1.56 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 72.79 μg/m3

Astronomical

Sunrise: 5:09 AM
Sun Transit: 1:03 PM
Sunset: 8:59 PM
Daylight: 15 hrs 50 mins
Moonrise: 12:13 AM
Moon Transit: 7:20 AM
Moonset: 2:46 PM
Moon Phase: Last Quarter
Moon Illumination: 26.8%

Best Times for Fishing or Hunting

Major Periods

6:50 AM - 9:20 AM
7:18 PM - 9:48 PM

Minor Periods

2:16 PM - 3:46 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 9, 2026

Weather Forecast

Sunny
69.8°F
55.7°F
63.3°F
71%
0 in
17%
0%
5.8 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 4.67 μg/m3
PM10: 5.08 μg/m3
Carbon Monoxide: 121.92 μg/m3
Nitrogen Dioxide: 1.62 μg/m3
Sulphur Dioxide: 0.75 μg/m3
Ozone: 77.83 μg/m3

Astronomical

Sunrise: 5:09 AM
Sun Transit: 1:04 PM
Sunset: 8:58 PM
Daylight: 15 hrs 49 mins
Moonrise: 12:34 AM
Moon Transit: 8:11 AM
Moonset: 4:09 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

7:41 AM - 10:11 AM
8:12 PM - 10:42 PM

Minor Periods

3:39 PM - 5:09 PM
12:04 AM - 1:34 AM

Action Rating: 2 out of 5

Friday, July 10, 2026

Weather Forecast

Sunny
68.5°F
57.5°F
62.5°F
62%
0.09 in
57%
0%
5.6 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 3.93 μg/m3
PM10: 4.2 μg/m3
Carbon Monoxide: 122.29 μg/m3
Nitrogen Dioxide: 1.24 μg/m3
Sulphur Dioxide: 0.47 μg/m3
Ozone: 79.42 μg/m3

Astronomical

Sunrise: 5:10 AM
Sun Transit: 1:04 PM
Sunset: 8:58 PM
Daylight: 15 hrs 47 mins
Moonrise: 1:01 AM
Moon Transit: 9:08 AM
Moonset: 5:34 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

8:38 AM - 11:08 AM
9:12 PM - 11:42 PM

Minor Periods

5:04 PM - 6:34 PM
12:31 AM - 2:01 AM

Action Rating: 3 out of 5

Saturday, July 11, 2026

Weather Forecast

Patchy rain nearby
74.1°F
57°F
66.1°F
87%
0.22 in
81%
0%
6.5 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 3.07 μg/m3
PM10: 3.28 μg/m3
Carbon Monoxide: 131.64 μg/m3
Nitrogen Dioxide: 1.66 μg/m3
Sulphur Dioxide: 0.52 μg/m3
Ozone: 77.71 μg/m3

Astronomical

Sunrise: 5:11 AM
Sun Transit: 1:04 PM
Sunset: 8:57 PM
Daylight: 15 hrs 46 mins
Moonrise: 1:38 AM
Moon Transit: 10:11 AM
Moonset: 6:55 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:41 AM - 12:11 AM

Minor Periods

6:25 PM - 7:55 PM
1:08 AM - 2:38 AM

Action Rating: 2 out of 5

Sunday, July 12, 2026

Weather Forecast

Patchy rain nearby
79.6°F
62.4°F
72.4°F
77%
0.11 in
64%
0%
13.9 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 5.86 μg/m3
PM10: 6.05 μg/m3
Carbon Monoxide: 182.88 μg/m3
Nitrogen Dioxide: 1.71 μg/m3
Sulphur Dioxide: 0.36 μg/m3
Ozone: 70.25 μg/m3

Astronomical

Sunrise: 5:12 AM
Sun Transit: 1:04 PM
Sunset: 8:56 PM
Daylight: 15 hrs 44 mins
Moonrise: 2:32 AM
Moon Transit: 11:17 AM
Moonset: 8:04 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:47 AM - 1:17 PM

Minor Periods

7:34 PM - 9:04 PM
2:02 AM - 3:32 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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