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

Current Water Temperature

32.0°F

Measurement Time: Sunday, June 14, 2026, 12:34 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

47.1°F
Patchy rain nearby
Patchy rain nearby
42.1°F
47.1°F
76%
WNW 11 mph
18.2 mph
41.7°F
40.1°F
0 in
100%
6 mi
1009 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Sun
H: 66°F
L: 46°F
Patchy rain nearby
Mon
H: 59°F
L: 44°F
Partly Cloudy
Tue
H: 56°F
L: 41°F
Patchy rain nearby
Wed
H: 58°F
L: 47°F
Patchy rain nearby
Thu
H: 58°F
L: 49°F

Air Quality

AQI: 1 - Good
Carbon Monoxide: 95 μg/m3
Nitrogen Dioxide: 0.5 μg/m3
Sulphur Dioxide: 0.1 μg/m3
Ozone: 55 μg/m3

Astronomical

Sunrise: 4:59 AM
Sun Transit: 1:00 PM
Sunset: 9:00 PM
Daylight: 16 hrs 1 mins
Moonrise: 3:51 AM
Moon Transit: 12:32 AM
Moonset: 9:20 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:02 AM - 2:32 PM

Minor Periods

8:50 PM - 10:20 PM
3:21 AM - 4:51 AM

Action Rating: 5 out of 5

Red Flag Warning issued June 13 at 12:46PM CDT until June 14 at 9:00PM CDT by NWS Duluth MN

Effective: Sat June 13, 2026, 12:46 PM
Expires: Sun June 14, 2026, 7:00 AM

The National Weather Service in Duluth has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 1 PM to 9 PM CDT Sunday. * AFFECTED AREA...In Minnesota, North St. Louis, Northern Cook and Lake, Central St. Louis and Southern Lake. * WINDS...Northwest 15 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 23 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.
Sunday, June 14, 2026

Weather Forecast

Patchy rain nearby
65.8°F
45.7°F
52°F
65%
0.01 in
20%
0%
15.7 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 1.3 μg/m3
PM10: 1.48 μg/m3
Carbon Monoxide: 96.75 μg/m3
Nitrogen Dioxide: 0.55 μg/m3
Sulphur Dioxide: 0.11 μg/m3
Ozone: 66.21 μg/m3

Astronomical

Sunrise: 4:59 AM
Sun Transit: 1:00 PM
Sunset: 9:00 PM
Daylight: 16 hrs 1 mins
Moonrise: 3:51 AM
Moon Transit: 12:32 AM
Moonset: 9:20 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:02 AM - 2:32 PM

Minor Periods

8:50 PM - 10:20 PM
3:21 AM - 4:51 AM

Action Rating: 5 out of 5

Monday, June 15, 2026

Weather Forecast

Patchy rain nearby
58.9°F
43.9°F
50.7°F
65%
0.01 in
23%
0%
11.2 mph
6.1


Air Quality

AQI: 1 - Good
PM2.5: 1.19 μg/m3
PM10: 1.28 μg/m3
Carbon Monoxide: 99.83 μg/m3
Nitrogen Dioxide: 0.6 μg/m3
Sulphur Dioxide: 0.11 μg/m3
Ozone: 69.58 μg/m3

Astronomical

Sunrise: 4:59 AM
Sun Transit: 1:00 PM
Sunset: 9:00 PM
Daylight: 16 hrs 1 mins
Moonrise: 4:54 AM
Moon Transit: 1:40 PM
Moonset: 10:21 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

12:39 AM - 3:09 AM
1:10 PM - 3:40 PM

Minor Periods

9:51 PM - 11:21 PM
4:24 AM - 5:54 AM

Action Rating: 3 out of 5

Tuesday, June 16, 2026

Weather Forecast

Partly Cloudy
55.9°F
41°F
48.8°F
71%
0 in
10%
0%
7.8 mph
4.6


Air Quality

AQI: 1 - Good
PM2.5: 1.5 μg/m3
PM10: 1.63 μg/m3
Carbon Monoxide: 101.46 μg/m3
Nitrogen Dioxide: 1.42 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 52.08 μg/m3

Astronomical

Sunrise: 4:59 AM
Sun Transit: 1:00 PM
Sunset: 9:00 PM
Daylight: 16 hrs 2 mins
Moonrise: 6:12 AM
Moon Transit: 2:46 PM
Moonset: 11:05 PM
Moon Phase: New
Moon Illumination: 1.0%

Best Times for Fishing or Hunting

Major Periods

1:46 AM - 4:16 AM
2:16 PM - 4:46 PM

Minor Periods

12:00 AM - 12:00 AM
5:42 AM - 7:12 AM

Action Rating: 3 out of 5

Wednesday, June 17, 2026

Weather Forecast

Patchy rain nearby
57.8°F
47.4°F
52.8°F
70%
0.02 in
36%
0%
6 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 1.53 μg/m3
PM10: 1.72 μg/m3
Carbon Monoxide: 102.37 μg/m3
Nitrogen Dioxide: 2.22 μg/m3
Sulphur Dioxide: 0.74 μg/m3
Ozone: 50.79 μg/m3

Astronomical

Sunrise: 4:59 AM
Sun Transit: 1:00 PM
Sunset: 9:01 PM
Daylight: 16 hrs 2 mins
Moonrise: 7:38 AM
Moon Transit: 3:47 PM
Moonset: 12:05 AM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

2:50 AM - 5:20 AM
3:17 PM - 5:47 PM

Minor Periods

7:08 AM - 8:38 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Thursday, June 18, 2026

Weather Forecast

Patchy rain nearby
58.2°F
48.7°F
52.7°F
81%
0.08 in
67%
0%
6.5 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 2.31 μg/m3
PM10: 2.55 μg/m3
Carbon Monoxide: 134.5 μg/m3
Nitrogen Dioxide: 3.69 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 44.75 μg/m3

Astronomical

Sunrise: 4:59 AM
Sun Transit: 1:00 PM
Sunset: 9:01 PM
Daylight: 16 hrs 2 mins
Moonrise: 9:04 AM
Moon Transit: 4:41 PM
Moonset: 12:37 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%

Best Times for Fishing or Hunting

Major Periods

3:47 AM - 6:17 AM
4:11 PM - 6:41 PM

Minor Periods

8:34 AM - 10:04 AM
12:00 AM - 12:00 AM

Action Rating: 2 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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