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

Current Water Temperature

32.0°F

Measurement Time: Tuesday, September 1, 2026, 3:30 PM 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

68°F
Partly Cloudy
Partly Cloudy
68%
W 5 mph
57°F

Weather Forecast

Partly Cloudy
Tonight
58°F - Partly Cloudy
Partly Sunny
Wednesday
76°F - Partly Sunny
Partly Cloudy
Wednesday Night
56°F - Partly Cloudy
Mostly Sunny
Thursday
71°F - Mostly Sunny
Mostly Cloudy then Slight Chance Rain Showers
Thursday Night
57°F - Mostly Cloudy then Slight Chance Rain Showers
Slight Chance Rain Showers
Friday
70°F - Slight Chance Rain Showers
Slight Chance Showers And Thunderstorms
Friday Night
57°F - Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers
Saturday
73°F - Slight Chance Rain Showers
Chance Showers And Thunderstorms
Saturday Night
58°F - Chance Showers And Thunderstorms
Chance Rain Showers
Sunday
75°F - Chance Rain Showers
Chance Rain Showers
Sunday Night
55°F - Chance Rain Showers
Chance Rain Showers
Labor Day
67°F - Chance Rain Showers
Chance Rain Showers
Monday Night
53°F - Chance Rain Showers
Chance Rain Showers
Tuesday
67°F - Chance Rain Showers

Astronomical

Sunrise: 6:17 AM
Sun Transit: 12:58 AM
Sunset: 7:39 PM
Daylight: 13 hrs 22 mins
Moonrise: 9:07 PM
Moon Transit: 4:03 AM
Moonset: 11:41 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:33 AM - 6:03 AM
4:01 PM - 6:31 PM

Minor Periods

8:37 PM - 10:07 PM
11:11 AM - 12:41 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 12:58 AM
Sunset: 7:39 PM
Daylight: 13 hrs 22 mins
Moonrise: 9:07 PM
Moon Transit: 4:03 AM
Moonset: 11:41 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:33 AM - 6:03 AM
4:01 PM - 6:31 PM

Minor Periods

8:37 PM - 10:07 PM
11:11 AM - 12:41 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 12:58 AM
Sunset: 7:37 PM
Daylight: 13 hrs 19 mins
Moonrise: 9:35 PM
Moon Transit: 4:55 AM
Moonset: 1:03 PM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:25 AM - 6:55 AM
4:56 PM - 7:26 PM

Minor Periods

9:05 PM - 10:35 PM
12:33 AM - 2:03 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 12:58 AM
Sunset: 7:37 PM
Daylight: 13 hrs 19 mins
Moonrise: 9:35 PM
Moon Transit: 4:55 AM
Moonset: 1:03 PM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:25 AM - 6:55 AM
4:56 PM - 7:26 PM

Minor Periods

9:05 PM - 10:35 PM
12:33 AM - 2:03 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:20 AM
Sun Transit: 12:58 AM
Sunset: 7:35 PM
Daylight: 13 hrs 15 mins
Moonrise: 10:16 PM
Moon Transit: 5:52 AM
Moonset: 2:24 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:22 AM - 7:52 AM
5:54 PM - 8:24 PM

Minor Periods

9:46 PM - 11:16 PM
1:54 PM - 3:24 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:20 AM
Sun Transit: 12:58 AM
Sunset: 7:35 PM
Daylight: 13 hrs 15 mins
Moonrise: 10:16 PM
Moon Transit: 5:52 AM
Moonset: 2:24 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:22 AM - 7:52 AM
5:54 PM - 8:24 PM

Minor Periods

9:46 PM - 11:16 PM
1:54 PM - 3:24 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 12:57 AM
Sunset: 7:33 PM
Daylight: 13 hrs 12 mins
Moonrise: 11:09 PM
Moon Transit: 6:52 AM
Moonset: 3:38 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:22 AM - 8:52 AM
6:56 PM - 9:26 PM

Minor Periods

12:00 AM - 12:00 AM
3:08 PM - 4:38 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 12:57 AM
Sunset: 7:33 PM
Daylight: 13 hrs 12 mins
Moonrise: 11:09 PM
Moon Transit: 6:52 AM
Moonset: 3:38 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:22 AM - 8:52 AM
6:56 PM - 9:26 PM

Minor Periods

12:00 AM - 12:00 AM
3:08 PM - 4:38 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 12:57 AM
Sunset: 7:31 PM
Daylight: 13 hrs 8 mins
Moonrise: 12:09 AM
Moon Transit: 7:55 AM
Moonset: 4:39 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:25 AM - 9:55 AM
7:59 PM - 10:29 PM

Minor Periods

4:09 PM - 5:39 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 12:57 AM
Sunset: 7:31 PM
Daylight: 13 hrs 8 mins
Moonrise: 12:09 AM
Moon Transit: 7:55 AM
Moonset: 4:39 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:25 AM - 9:55 AM
7:59 PM - 10:29 PM

Minor Periods

4:09 PM - 5:39 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 12:57 AM
Sunset: 7:29 PM
Daylight: 13 hrs 5 mins
Moonrise: 12:19 AM
Moon Transit: 8:58 AM
Moonset: 5:26 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:28 AM - 10:58 AM
9:01 PM - 11:31 PM

Minor Periods

4:56 PM - 6:26 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 12:57 AM
Sunset: 7:29 PM
Daylight: 13 hrs 5 mins
Moonrise: 12:19 AM
Moon Transit: 8:58 AM
Moonset: 5:26 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:28 AM - 10:58 AM
9:01 PM - 11:31 PM

Minor Periods

4:56 PM - 6:26 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:56 AM
Sunset: 7:27 PM
Daylight: 13 hrs 2 mins
Moonrise: 1:39 AM
Moon Transit: 9:58 AM
Moonset: 6:00 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:28 AM - 11:58 AM

Minor Periods

5:30 PM - 7:00 PM
1:09 AM - 2:39 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:56 AM
Sunset: 7:27 PM
Daylight: 13 hrs 2 mins
Moonrise: 1:39 AM
Moon Transit: 9:58 AM
Moonset: 6:00 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:28 AM - 11:58 AM

Minor Periods

5:30 PM - 7:00 PM
1:09 AM - 2:39 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 12:56 AM
Sunset: 7:25 PM
Daylight: 12 hrs 58 mins
Moonrise: 3:04 AM
Moon Transit: 10:54 AM
Moonset: 6:26 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:24 AM - 12:54 AM

Minor Periods

5:56 PM - 7:26 PM
2:34 AM - 4:04 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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