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

Current Water Temperature

32.0°F

Measurement Time: Monday, June 15, 2026, 1:00 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

52.7°F
Sunny
Sunny
45.7°F
52.7°F
62%
W 10.3 mph
17.9 mph
49°F
39.3°F
0 in
0%
6 mi
1007 mbar
0

Five Day Weather Forecast

Moderate rain
Mon
H: 71°F
L: 52°F
Partly Cloudy
Tue
H: 55°F
L: 42°F
Sunny
Wed
H: 59°F
L: 45°F
Patchy rain nearby
Thu
H: 58°F
L: 47°F
Patchy rain nearby
Fri
H: 56°F
L: 47°F

Air Quality

AQI: 1 - Good
PM2.5: 1.8 μg/m3
PM10: 1.9 μg/m3
Carbon Monoxide: 98 μg/m3
Nitrogen Dioxide: 0.4 μg/m3
Sulphur Dioxide: 0.1 μg/m3
Ozone: 65 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

Small Craft Advisory issued June 15 at 2:43AM CDT until June 15 at 7:00PM CDT by NWS Duluth MN

Effective: Mon June 15, 2026, 2:43 AM
Expires: Mon June 15, 2026, 2:45 PM

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft expected. * WHERE...Grand Portage to Grand Marais MN. * WHEN...From 7 AM this morning to 7 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions.


Small Craft Advisory issued June 14 at 9:11PM CDT until June 15 at 7:00PM CDT by NWS Duluth MN

Effective: Sun June 14, 2026, 9:11 PM
Expires: Mon June 15, 2026, 9:15 AM

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and waves 2 to 4 ft expected. * WHERE...Grand Portage to Grand Marais MN. * WHEN...From 7 AM to 7 PM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions.
Monday, June 15, 2026

Weather Forecast

Moderate rain
70.5°F
51.6°F
59°F
63%
0.23 in
62%
0%
13.2 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 2.37 μg/m3
PM10: 2.56 μg/m3
Carbon Monoxide: 99.25 μg/m3
Nitrogen Dioxide: 0.67 μg/m3
Sulphur Dioxide: 0.14 μg/m3
Ozone: 68.17 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
55.1°F
42.4°F
49.4°F
78%
0 in
13%
0%
7.2 mph
6.7


Air Quality

AQI: 1 - Good
PM2.5: 1.68 μg/m3
PM10: 1.76 μg/m3
Carbon Monoxide: 97.13 μg/m3
Nitrogen Dioxide: 1.33 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 50.88 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

Sunny
58.6°F
45.1°F
52.1°F
67%
0 in
6%
0%
7.6 mph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 0.98 μg/m3
PM10: 1.05 μg/m3
Carbon Monoxide: 97.13 μg/m3
Nitrogen Dioxide: 1.32 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 52.25 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
58.3°F
47.1°F
52.7°F
73%
0.15 in
64%
0%
10.3 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 1.19 μg/m3
PM10: 1.3 μg/m3
Carbon Monoxide: 102.89 μg/m3
Nitrogen Dioxide: 0.89 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 59.88 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

Friday, June 19, 2026

Weather Forecast

Patchy rain nearby
55.9°F
46.9°F
50.7°F
74%
0.05 in
57%
0%
10.5 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 0.55 μg/m3
PM10: 0.58 μg/m3
Carbon Monoxide: 116.13 μg/m3
Nitrogen Dioxide: 0.85 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 51.63 μg/m3

Astronomical

Sunrise: 4:59 AM
Sun Transit: 1:00 PM
Sunset: 9:01 PM
Daylight: 16 hrs 2 mins
Moonrise: 10:27 AM
Moon Transit: 5:31 PM
Moonset: 12:00 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%

Best Times for Fishing or Hunting

Major Periods

4:39 AM - 7:09 AM
5:01 PM - 7:31 PM

Minor Periods

9:57 AM - 11:27 AM
12:00 AM - 12:00 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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