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

Current Water Temperature

32.0°F

Measurement Time: Monday, July 27, 2026, 10:02 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

64.6°F
Mist
Mist
52.9°F
64.6°F
96%
ESE 8.1 mph
12.7 mph
64.6°F
63.3°F
0 in
100%
6 mi
1008 mbar
5.1

Five Day Weather Forecast

Fog
Mon
H: 74°F
L: 58°F
Sunny
Tue
H: 72°F
L: 61°F
Sunny
Wed
H: 73°F
L: 59°F
Sunny
Thu
H: 79°F
L: 62°F
Patchy rain nearby
Fri
H: 75°F
L: 64°F

Air Quality

AQI: 1 - Good
PM2.5: 16.5 μg/m3
PM10: 17.1 μg/m3
Carbon Monoxide: 124 μg/m3
Nitrogen Dioxide: 0.8 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 73 μg/m3

Astronomical

Sunrise: 5:29 AM
Sun Transit: 1:05 PM
Sunset: 8:41 PM
Daylight: 15 hrs 12 mins
Moonrise: 8:05 PM
Moon Transit: 12:00 AM
Moonset: 2:59 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:09 AM - 1:39 PM

Minor Periods

7:35 PM - 9:05 PM
2:29 AM - 3:59 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued July 27 at 8:47AM CDT until July 27 at 5:00PM CDT by NWS Duluth MN

Effective: Mon July 27, 2026, 8:47 AM
Expires: Mon July 27, 2026, 5:00 PM

* WHAT...Dense fog will reduce visibility to below 1 NM. * WHERE...Grand Portage to Grand Marais MN, Grand Marais to Taconite Harbor MN and Taconite Harbor to Silver Bay Harbor MN. * WHEN...Until 5 PM CDT this afternoon. * IMPACTS...Low visibility will make navigation difficult.

If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.
Monday, July 27, 2026

Weather Forecast

Fog
73.9°F
58.1°F
64.9°F
89%
0.14 in
79%
0%
10.1 mph
6.9


Air Quality

AQI: 1 - Good
PM2.5: 12.28 μg/m3
PM10: 12.81 μg/m3
Carbon Monoxide: 130.42 μg/m3
Nitrogen Dioxide: 1.89 μg/m3
Sulphur Dioxide: 0.82 μg/m3
Ozone: 66.92 μg/m3

Astronomical

Sunrise: 5:29 AM
Sun Transit: 1:05 PM
Sunset: 8:41 PM
Daylight: 15 hrs 12 mins
Moonrise: 8:05 PM
Moon Transit: 12:00 AM
Moonset: 2:59 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:09 AM - 1:39 PM

Minor Periods

7:35 PM - 9:05 PM
2:29 AM - 3:59 AM

Action Rating: 3 out of 5

Tuesday, July 28, 2026

Weather Forecast

Sunny
71.9°F
60.5°F
66.1°F
60%
0 in
4%
0%
7.4 mph
6.9


Air Quality

AQI: 1 - Good
PM2.5: 9.72 μg/m3
PM10: 10.03 μg/m3
Carbon Monoxide: 116.54 μg/m3
Nitrogen Dioxide: 2.2 μg/m3
Sulphur Dioxide: 0.99 μg/m3
Ozone: 65.38 μg/m3

Astronomical

Sunrise: 5:30 AM
Sun Transit: 1:05 PM
Sunset: 8:40 PM
Daylight: 15 hrs 10 mins
Moonrise: 8:35 PM
Moon Transit: 12:02 AM
Moonset: 4:05 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:59 AM - 2:29 PM

Minor Periods

8:05 PM - 9:35 PM
3:35 AM - 5:05 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Sunny
73.2°F
58.7°F
65.2°F
70%
0 in
7%
0%
7.8 mph
7.3


Air Quality

AQI: 1 - Good
PM2.5: 7.28 μg/m3
PM10: 7.59 μg/m3
Carbon Monoxide: 108.54 μg/m3
Nitrogen Dioxide: 1.83 μg/m3
Sulphur Dioxide: 0.49 μg/m3
Ozone: 70.04 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 1:05 PM
Sunset: 8:39 PM
Daylight: 15 hrs 7 mins
Moonrise: 8:58 PM
Moon Transit: 12:50 AM
Moonset: 5:15 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:20 AM - 2:50 AM
12:46 AM - 3:16 PM

Minor Periods

8:28 PM - 9:58 PM
4:45 AM - 6:15 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Sunny
78.7°F
61.8°F
68.7°F
71%
0.01 in
20%
0%
11.6 mph
5.9


Air Quality

AQI: 1 - Good
PM2.5: 5.11 μg/m3
PM10: 5.51 μg/m3
Carbon Monoxide: 123.91 μg/m3
Nitrogen Dioxide: 2.13 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 70 μg/m3

Astronomical

Sunrise: 5:32 AM
Sun Transit: 1:05 PM
Sunset: 8:37 PM
Daylight: 15 hrs 5 mins
Moonrise: 9:16 PM
Moon Transit: 1:37 AM
Moonset: 6:27 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:07 AM - 3:37 AM
1:32 PM - 4:02 PM

Minor Periods

8:46 PM - 10:16 PM
5:57 AM - 7:27 AM

Action Rating: 5 out of 5

Friday, July 31, 2026

Weather Forecast

Patchy rain nearby
75.3°F
63.7°F
68.7°F
82%
0.43 in
85%
0%
8.1 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 6.49 μg/m3
PM10: 6.95 μg/m3
Carbon Monoxide: 191.5 μg/m3
Nitrogen Dioxide: 4.01 μg/m3
Sulphur Dioxide: 1.14 μg/m3
Ozone: 53.75 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 1:05 PM
Sunset: 8:36 PM
Daylight: 15 hrs 2 mins
Moonrise: 9:32 PM
Moon Transit: 2:21 AM
Moonset: 7:39 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

1:51 AM - 4:21 AM
2:16 PM - 4:46 PM

Minor Periods

9:02 PM - 10:32 PM
7:09 AM - 8:39 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.

Webcams Near Grand Portage, MN

Sponsored Content