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

Current Water Temperature

32.4°F

Measurement Time: Sunday, April 19, 2026, 7:15 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

25°F
Clear
Clear
18.7°F
25°F
54%
NW 6.3 mph
10.5 mph
18.7°F
10.4°F
0 in
0%
6 mi
1026 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 36°F
L: 21°F
Sunny
Tue
H: 52°F
L: 34°F
Partly Cloudy
Wed
H: 47°F
L: 35°F
Moderate rain
Thu
H: 45°F
L: 37°F
Moderate rain
Fri
H: 40°F
L: 38°F

Air Quality

PM2.5: 3.75 μg/m3
PM10: 4.55 μg/m3
Carbon Monoxide: 163.85 μg/m3
Nitrogen Dioxide: 1.55 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 12:57 AM
Sunset: 7:56 PM
Daylight: 13 hrs 57 mins
Moonrise: 7:26 AM
Moon Transit: 4:07 PM
Moonset: 12:39 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

3:08 AM - 5:38 AM
3:37 PM - 6:07 PM

Minor Periods

6:56 AM - 8:26 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Special Weather Statement issued April 19 at 2:13PM CDT by NWS Duluth MN

Effective: Sun April 19, 2026, 2:13 PM
Expires: Mon April 20, 2026, 6:00 AM

Dry conditions and breezy winds will lead to near critical fire weather conditions Monday. southwest winds of 15 to 20 mph with gusts of 25 to 30 mph are forecast for tomorrow afternoon and evening. Minimum relative humidity values of 22 to 25 percent are also expected. Together, these conditions could lead to the rapid spread of fires. 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.


Monday, April 20, 2026

Weather Forecast

Sunny
36°F
21°F
30.4°F
55%
0 in
0%
0%
14.3 mph
3.9


Air Quality

AQI: 1 - Good
PM2.5: 4.39 μg/m3
PM10: 5.47 μg/m3
Carbon Monoxide: 168.65 μg/m3
Nitrogen Dioxide: 1.5 μg/m3
Sulphur Dioxide: 1.64 μg/m3
Ozone: 93.88 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 12:57 AM
Sunset: 7:56 PM
Daylight: 13 hrs 57 mins
Moonrise: 7:26 AM
Moon Transit: 4:07 PM
Moonset: 12:39 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

3:08 AM - 5:38 AM
3:37 PM - 6:07 PM

Minor Periods

6:56 AM - 8:26 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, April 21, 2026

Weather Forecast

Sunny
51.6°F
34.3°F
42.5°F
67%
0 in
0%
0%
9.8 mph
5.5


Air Quality

AQI: 1 - Good
PM2.5: 5.19 μg/m3
PM10: 6.48 μg/m3
Carbon Monoxide: 169.37 μg/m3
Nitrogen Dioxide: 1.94 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 92.96 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 12:57 AM
Sunset: 7:58 PM
Daylight: 14 hrs mins
Moonrise: 8:26 AM
Moon Transit: 5:12 PM
Moonset: 12:55 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

4:13 AM - 6:43 AM
4:42 PM - 7:12 PM

Minor Periods

7:56 AM - 9:26 AM
12:25 AM - 1:55 AM

Action Rating: 2 out of 5

Wednesday, April 22, 2026

Weather Forecast

Partly Cloudy
46.7°F
35.4°F
40°F
71%
0 in
0%
0%
11.6 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 2.94 μg/m3
PM10: 3.75 μg/m3
Carbon Monoxide: 149.93 μg/m3
Nitrogen Dioxide: 3.01 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 83.2 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 12:57 AM
Sunset: 7:59 PM
Daylight: 14 hrs 3 mins
Moonrise: 9:38 AM
Moon Transit: 6:15 PM
Moonset: 1:55 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

5:17 AM - 7:47 AM
5:45 PM - 8:15 PM

Minor Periods

9:08 AM - 10:38 AM
1:25 AM - 2:55 AM

Action Rating: 3 out of 5

Thursday, April 23, 2026

Weather Forecast

Moderate rain
44.7°F
36.5°F
40.7°F
93%
0.46 in
89%
0%
12.5 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 3.1 μg/m3
PM10: 3.55 μg/m3
Carbon Monoxide: 159.64 μg/m3
Nitrogen Dioxide: 3.27 μg/m3
Sulphur Dioxide: 1.51 μg/m3
Ozone: 82.08 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 12:57 AM
Sunset: 8:01 PM
Daylight: 14 hrs 7 mins
Moonrise: 10:58 AM
Moon Transit: 7:12 PM
Moonset: 2:39 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

6:17 AM - 8:47 AM
6:42 PM - 9:12 PM

Minor Periods

10:28 AM - 11:58 AM
2:09 AM - 3:39 AM

Action Rating: 3 out of 5

Friday, April 24, 2026

Weather Forecast

Moderate rain
40.1°F
37.7°F
40.2°F
97%
0.22 in
89%
0%
10.3 mph
0


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 12:56 AM
Sunset: 8:02 PM
Daylight: 14 hrs 10 mins
Moonrise: 12:20 AM
Moon Transit: 8:05 PM
Moonset: 3:10 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

7:12 AM - 9:42 AM
7:35 PM - 10:05 PM

Minor Periods

11:50 AM - 1:20 PM
2:40 AM - 4:10 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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