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

Current Water Temperature

32.4°F

Measurement Time: Monday, January 12, 2026, 11:15 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

30.7°F
Light snow
Light snow
24.5°F
30.7°F
100%
SSW 6.3 mph
9.5 mph
24.2°F
25.9°F
0 in
100%
2 mi
994 mbar
0

Five Day Weather Forecast

Patchy moderate snow
Tue
H: 36°F
L: 9°F
Partly Cloudy
Wed
H: 15°F
L: 3°F
Moderate or heavy snow showers
Thu
H: 20°F
L: 6°F
Light freezing rain
Fri
H: 30°F
L: 1°F
Light freezing rain
Sat
H: 10°F
L: -13°F

Air Quality

AQI: 1 - Good
PM2.5: 1.15 μg/m3
PM10: 1.15 μg/m3
Carbon Monoxide: 163.85 μg/m3
Nitrogen Dioxide: 2.25 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 72 μg/m3

Astronomical

Sunrise: 7:45 AM
Sun Transit: 12:07 AM
Sunset: 4:31 PM
Daylight: 8 hrs 46 mins
Moonrise: 3:40 AM
Moon Transit: 7:52 AM
Moonset: 11:59 AM
Moon Phase: Waning Crescent
Moon Illumination: 15.9%

Best Times for Fishing or Hunting

Major Periods

7:22 AM - 9:52 AM
7:49 PM - 10:19 PM

Minor Periods

11:29 AM - 12:59 AM
3:10 AM - 4:40 AM

Action Rating: 3 out of 5

Winter Weather Advisory issued January 13 at 12:18AM CST until January 13 at 6:00AM CST by NWS Duluth MN

Effective: Tue January 13, 2026, 12:18 AM
Expires: Tue January 13, 2026, 6:00 AM

* WHAT...Mixed precipitation. Additional snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Koochiching, Carlton, St. Louis, Cook and Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation, the Fond du Lac Band and the Bois Forte Band, Nett Lake and, Lake Vermilion areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...Until 6 AM CST early this morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions.

Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information. Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury.


Tuesday, January 13, 2026

Weather Forecast

Patchy moderate snow
36.1°F
8.7°F
30.3°F
81%
0.03 in
77%
20%
23.7 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 3.26 μg/m3
PM10: 3.49 μg/m3
Carbon Monoxide: 169.89 μg/m3
Nitrogen Dioxide: 3.14 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 73.8 μg/m3

Astronomical

Sunrise: 7:45 AM
Sun Transit: 12:07 AM
Sunset: 4:31 PM
Daylight: 8 hrs 46 mins
Moonrise: 3:40 AM
Moon Transit: 7:52 AM
Moonset: 11:59 AM
Moon Phase: Waning Crescent
Moon Illumination: 15.9%

Best Times for Fishing or Hunting

Major Periods

7:22 AM - 9:52 AM
7:49 PM - 10:19 PM

Minor Periods

11:29 AM - 12:59 AM
3:10 AM - 4:40 AM

Action Rating: 3 out of 5

Wednesday, January 14, 2026

Weather Forecast

Partly Cloudy
14.9°F
3.4°F
9.2°F
65%
0 in
0%
0%
23.5 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 1.14 μg/m3
PM10: 1.23 μg/m3
Carbon Monoxide: 153.09 μg/m3
Nitrogen Dioxide: 1.22 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 74.4 μg/m3

Astronomical

Sunrise: 7:44 AM
Sun Transit: 12:07 AM
Sunset: 4:32 PM
Daylight: 8 hrs 48 mins
Moonrise: 4:48 AM
Moon Transit: 8:41 AM
Moonset: 12:31 AM
Moon Phase: Waning Crescent
Moon Illumination: 8.5%

Best Times for Fishing or Hunting

Major Periods

8:11 AM - 10:41 AM
8:39 PM - 11:09 PM

Minor Periods

12:01 AM - 1:31 PM
4:18 AM - 5:48 AM

Action Rating: 3 out of 5

Thursday, January 15, 2026

Weather Forecast

Moderate or heavy snow showers
19.7°F
5.5°F
13.3°F
84%
0.16 in
75%
18%
18.1 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 1.46 μg/m3
PM10: 1.57 μg/m3
Carbon Monoxide: 144.61 μg/m3
Nitrogen Dioxide: 1.82 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 73.88 μg/m3

Astronomical

Sunrise: 7:43 AM
Sun Transit: 12:08 AM
Sunset: 4:34 PM
Daylight: 8 hrs 50 mins
Moonrise: 5:50 AM
Moon Transit: 9:32 AM
Moonset: 1:13 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:02 AM - 11:32 AM

Minor Periods

12:43 AM - 2:13 PM
5:20 AM - 6:50 AM

Action Rating: 2 out of 5

Friday, January 16, 2026

Weather Forecast

Light freezing rain
29.9°F
1.2°F
19.9°F
86%
0.01 in
85%
29%
18.1 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 1.59 μg/m3
PM10: 1.67 μg/m3
Carbon Monoxide: 156.65 μg/m3
Nitrogen Dioxide: 2.94 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 71.24 μg/m3

Astronomical

Sunrise: 7:43 AM
Sun Transit: 12:08 AM
Sunset: 4:35 PM
Daylight: 8 hrs 53 mins
Moonrise: 6:45 AM
Moon Transit: 10:24 AM
Moonset: 2:07 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:54 AM - 12:24 AM

Minor Periods

1:37 PM - 3:07 PM
6:15 AM - 7:45 AM

Action Rating: 3 out of 5

Saturday, January 17, 2026

Weather Forecast

Light freezing rain
9.5°F
-12.8°F
-2°F
86%
0.01 in
78%
30%
16.3 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 1.03 μg/m3
PM10: 1.03 μg/m3
Carbon Monoxide: 150.7 μg/m3
Nitrogen Dioxide: 1.23 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 73.85 μg/m3

Astronomical

Sunrise: 7:42 AM
Sun Transit: 12:08 AM
Sunset: 4:37 PM
Daylight: 8 hrs 55 mins
Moonrise: 7:28 AM
Moon Transit: 11:17 AM
Moonset: 3:11 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

2:41 PM - 4:11 PM
6:58 AM - 8:28 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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