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

Current Water Temperature

32.7°F

Measurement Time: Monday, March 16, 2026, 11:15 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

-3.8°F
Clear
Clear
-19.8°F
-3.8°F
53%
NNW 11.9 mph
19.7 mph
-19.8°F
-16.8°F
0 in
0%
6 mi
1018 mbar
0

Five Day Weather Forecast

Partly Cloudy
Tue
H: 15°F
L: -7°F
Overcast
Wed
H: 32°F
L: 18°F
Mist
Thu
H: 33°F
L: 30°F
Moderate snow
Fri
H: 30°F
L: 26°F
Heavy snow
Sat
H: 37°F
L: 26°F

Air Quality

AQI: 1 - Good
PM2.5: 4.25 μg/m3
PM10: 4.95 μg/m3
Carbon Monoxide: 212.85 μg/m3
Nitrogen Dioxide: 1.35 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 82 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:00 AM
Sunset: 7:07 PM
Daylight: 12 hrs mins
Moonrise: 6:35 AM
Moon Transit: 12:03 AM
Moonset: 5:45 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:33 AM - 2:03 PM

Minor Periods

5:15 PM - 6:45 PM
6:05 AM - 7:35 AM

Action Rating: 5 out of 5

Tuesday, March 17, 2026

Weather Forecast

Partly Cloudy
15.1°F
-6.5°F
5.8°F
61%
0 in
0%
0%
14.3 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 3.43 μg/m3
PM10: 3.93 μg/m3
Carbon Monoxide: 201.01 μg/m3
Nitrogen Dioxide: 1.22 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 86.16 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:00 AM
Sunset: 7:07 PM
Daylight: 12 hrs mins
Moonrise: 6:35 AM
Moon Transit: 12:03 AM
Moonset: 5:45 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:33 AM - 2:03 PM

Minor Periods

5:15 PM - 6:45 PM
6:05 AM - 7:35 AM

Action Rating: 5 out of 5

Wednesday, March 18, 2026

Weather Forecast

Overcast
31.6°F
17.6°F
24.7°F
87%
0 in
0%
3%
13 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 3.59 μg/m3
PM10: 3.9 μg/m3
Carbon Monoxide: 194.65 μg/m3
Nitrogen Dioxide: 2.07 μg/m3
Sulphur Dioxide: 1.22 μg/m3
Ozone: 94.96 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:00 AM
Sunset: 7:09 PM
Daylight: 12 hrs 3 mins
Moonrise: 6:51 AM
Moon Transit: 12:49 AM
Moonset: 7:03 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:19 AM - 2:49 PM

Minor Periods

6:33 PM - 8:03 PM
6:21 AM - 7:51 AM

Action Rating: 3 out of 5

Thursday, March 19, 2026

Weather Forecast

Mist
33.4°F
30.4°F
32.3°F
92%
0.21 in
79%
15%
6.7 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 2.47 μg/m3
PM10: 2.63 μg/m3
Carbon Monoxide: 173.49 μg/m3
Nitrogen Dioxide: 1.87 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 98.88 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 12:00 AM
Sunset: 7:10 PM
Daylight: 12 hrs 7 mins
Moonrise: 7:07 AM
Moon Transit: 12:31 AM
Moonset: 8:24 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

12:01 AM - 2:31 AM
12:01 AM - 2:31 AM

Minor Periods

7:54 PM - 9:24 PM
6:37 AM - 8:07 AM

Action Rating: 4 out of 5

Friday, March 20, 2026

Weather Forecast

Moderate snow
29.8°F
25.7°F
28.8°F
91%
0.09 in
76%
55%
12.3 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 7.85 μg/m3
PM10: 8.26 μg/m3
Carbon Monoxide: 167.17 μg/m3
Nitrogen Dioxide: 2.29 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 102.84 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 9:27 AM
Sunset: 7:12 PM
Daylight: 12 hrs 10 mins
Moonrise: 7:24 AM
Moon Transit: 2:26 PM
Moonset: 9:46 PM
Moon Phase: New
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

1:33 AM - 4:03 AM
1:56 PM - 4:26 PM

Minor Periods

9:16 PM - 10:46 PM
6:54 AM - 8:24 AM

Action Rating: 4 out of 5

Saturday, March 21, 2026

Weather Forecast

Heavy snow
36.6°F
26.3°F
30.1°F
95%
0.34 in
56%
47%
21.3 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.87 μg/m3
PM10: 3.34 μg/m3
Carbon Monoxide: 154.1 μg/m3
Nitrogen Dioxide: 2.43 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 92 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 12:00 AM
Sunset: 7:13 PM
Daylight: 12 hrs 14 mins
Moonrise: 7:45 AM
Moon Transit: 3:18 PM
Moonset: 11:12 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

2:24 AM - 4:54 AM
2:48 PM - 5:18 PM

Minor Periods

12:00 AM - 12:00 AM
7:15 AM - 8:45 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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