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

Current Water Temperature

32.4°F

Measurement Time: Sunday, April 12, 2026, 11:15 AM CDT

Temperature Locations

View Nearby Locations     View All Minnesota Locations     View Locations Near Me

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

43.9°F
Moderate rain
Moderate rain
40.3°F
43.9°F
89%
N 2.2 mph
4.1 mph
40.3°F
41.8°F
0.28 in
89%
6 mi
999 mbar
0.6

Five Day Weather Forecast

Moderate rain
Sun
H: 45°F
L: 35°F
Patchy rain nearby
Mon
H: 43°F
L: 34°F
Patchy rain nearby
Tue
H: 40°F
L: 34°F
Fog
Wed
H: 41°F
L: 29°F
Partly Cloudy
Thu
H: 48°F
L: 32°F

Air Quality

AQI: 1 - Good
PM2.5: 5.05 μg/m3
PM10: 5.65 μg/m3
Carbon Monoxide: 170.85 μg/m3
Nitrogen Dioxide: 6.25 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 74 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 1:00 PM
Sunset: 7:45 PM
Daylight: 13 hrs 30 mins
Moonrise: 4:20 AM
Moon Transit: 9:06 AM
Moonset: 2:04 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:36 AM - 11:06 AM
9:02 PM - 11:32 PM

Minor Periods

1:34 PM - 3:04 PM
3:50 AM - 5:20 AM

Action Rating: 2 out of 5

Dense Fog Advisory issued April 12 at 12:00PM CDT until April 13 at 1:00AM CDT by NWS Duluth MN

Effective: Sun April 12, 2026, 12:00 PM
Expires: Mon April 13, 2026, 1:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...Until 1 AM CDT Monday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.
Sunday, April 12, 2026

Weather Forecast

Moderate rain
45.1°F
34.5°F
40.2°F
93%
0.5 in
87%
0%
9.2 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 5.13 μg/m3
PM10: 5.76 μg/m3
Carbon Monoxide: 164.57 μg/m3
Nitrogen Dioxide: 2.9 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 92.4 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 1:00 PM
Sunset: 7:45 PM
Daylight: 13 hrs 30 mins
Moonrise: 4:20 AM
Moon Transit: 9:06 AM
Moonset: 2:04 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:36 AM - 11:06 AM
9:02 PM - 11:32 PM

Minor Periods

1:34 PM - 3:04 PM
3:50 AM - 5:20 AM

Action Rating: 2 out of 5

Monday, April 13, 2026

Weather Forecast

Patchy rain nearby
43.2°F
33.8°F
39.4°F
93%
0.14 in
84%
4%
13.2 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 3.5 μg/m3
PM10: 4.11 μg/m3
Carbon Monoxide: 164.81 μg/m3
Nitrogen Dioxide: 3.23 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 80.36 μg/m3

Astronomical

Sunrise: 6:13 AM
Sun Transit: 1:00 PM
Sunset: 7:46 PM
Daylight: 13 hrs 33 mins
Moonrise: 4:39 AM
Moon Transit: 9:52 AM
Moonset: 3:20 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:22 AM - 11:52 AM

Minor Periods

2:50 PM - 4:20 PM
4:09 AM - 5:39 AM

Action Rating: 2 out of 5

Tuesday, April 14, 2026

Weather Forecast

Patchy rain nearby
39.6°F
34°F
35.7°F
96%
0.04 in
82%
0%
12.5 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 3.76 μg/m3
PM10: 4.99 μg/m3
Carbon Monoxide: 154.37 μg/m3
Nitrogen Dioxide: 2.17 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 89.84 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 12:58 AM
Sunset: 7:48 PM
Daylight: 13 hrs 36 mins
Moonrise: 4:55 AM
Moon Transit: 10:38 AM
Moonset: 4:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:08 AM - 12:38 AM

Minor Periods

4:07 PM - 5:37 PM
4:25 AM - 5:55 AM

Action Rating: 3 out of 5

Wednesday, April 15, 2026

Weather Forecast

Fog
41.4°F
29.1°F
35.7°F
96%
0 in
0%
0%
8.1 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 2.62 μg/m3
PM10: 3.11 μg/m3
Carbon Monoxide: 152.59 μg/m3
Nitrogen Dioxide: 2.63 μg/m3
Sulphur Dioxide: 1.59 μg/m3
Ozone: 81.96 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 12:58 AM
Sunset: 7:49 PM
Daylight: 13 hrs 40 mins
Moonrise: 5:11 AM
Moon Transit: 10:33 AM
Moonset: 5:56 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

10:03 AM - 12:33 AM
10:03 AM - 12:33 AM

Minor Periods

5:26 PM - 6:56 PM
4:41 AM - 6:11 AM

Action Rating: 3 out of 5

Thursday, April 16, 2026

Weather Forecast

Partly Cloudy
48.4°F
31.5°F
38.2°F
94%
0 in
0%
3%
9.2 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 2.04 μg/m3
PM10: 2.42 μg/m3
Carbon Monoxide: 167.62 μg/m3
Nitrogen Dioxide: 2.11 μg/m3
Sulphur Dioxide: 1.26 μg/m3
Ozone: 77.69 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 12:58 AM
Sunset: 7:51 PM
Daylight: 13 hrs 43 mins
Moonrise: 5:28 AM
Moon Transit: 12:13 AM
Moonset: 7:18 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:43 AM - 2:13 PM

Minor Periods

6:48 PM - 8:18 PM
4:58 AM - 6:28 AM

Action Rating: 5 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.

Webcams Near Grand Portage, MN

Sponsored Content