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

Current Water Temperature

32.0°F

Measurement Time: Thursday, August 27, 2026, 11:10 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

67°F
Slight Chance Rain Showers
Slight Chance Rain Showers
67%
N 5 mph
56°F

Weather Forecast

Slight Chance Rain Showers
This Afternoon
70°F - Slight Chance Rain Showers
Chance Rain Showers then Partly Cloudy
Tonight
50°F - Chance Rain Showers then Partly Cloudy
Sunny
Friday
68°F - Sunny
Partly Cloudy then Patchy Fog
Friday Night
51°F - Partly Cloudy then Patchy Fog
Slight Chance Rain Showers
Saturday
70°F - Slight Chance Rain Showers
Slight Chance Rain Showers
Saturday Night
57°F - Slight Chance Rain Showers
Chance Rain Showers
Sunday
70°F - Chance Rain Showers
Chance Rain Showers
Sunday Night
57°F - Chance Rain Showers
Chance Showers And Thunderstorms
Monday
72°F - Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms
Monday Night
58°F - Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Mostly Sunny
Tuesday
75°F - Slight Chance Rain Showers then Mostly Sunny
Partly Cloudy
Tuesday Night
57°F - Partly Cloudy
Mostly Sunny
Wednesday
74°F - Mostly Sunny
Mostly Cloudy then Slight Chance Showers And Thunderstorms
Wednesday Night
57°F - Mostly Cloudy then Slight Chance Showers And Thunderstorms

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:00 PM
Sunset: 7:49 PM
Daylight: 13 hrs 39 mins
Moonrise: 7:39 PM
Moon Transit: 12:18 AM
Moonset: 5:25 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:12 AM - 2:42 PM

Minor Periods

7:09 PM - 8:39 PM
4:55 AM - 6:25 AM

Action Rating: 4 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: 6:10 AM
Sun Transit: 1:00 PM
Sunset: 7:49 PM
Daylight: 13 hrs 39 mins
Moonrise: 7:39 PM
Moon Transit: 12:18 AM
Moonset: 5:25 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:12 AM - 2:42 PM

Minor Periods

7:09 PM - 8:39 PM
4:55 AM - 6:25 AM

Action Rating: 4 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: 6:10 AM
Sun Transit: 1:00 PM
Sunset: 7:49 PM
Daylight: 13 hrs 39 mins
Moonrise: 7:39 PM
Moon Transit: 12:18 AM
Moonset: 5:25 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:12 AM - 2:42 PM

Minor Periods

7:09 PM - 8:39 PM
4:55 AM - 6:25 AM

Action Rating: 4 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: 6:12 AM
Sun Transit: 1:00 PM
Sunset: 7:47 PM
Daylight: 13 hrs 36 mins
Moonrise: 7:55 PM
Moon Transit: 1:02 AM
Moonset: 6:38 AM
Moon Phase: Full
Moon Illumination: 98.7%

Best Times for Fishing or Hunting

Major Periods

12:32 AM - 3:02 AM
12:56 AM - 3:26 PM

Minor Periods

7:25 PM - 8:55 PM
6:08 AM - 7:38 AM

Action Rating: 5 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: 6:12 AM
Sun Transit: 1:00 PM
Sunset: 7:47 PM
Daylight: 13 hrs 36 mins
Moonrise: 7:55 PM
Moon Transit: 1:02 AM
Moonset: 6:38 AM
Moon Phase: Full
Moon Illumination: 98.7%

Best Times for Fishing or Hunting

Major Periods

12:32 AM - 3:02 AM
12:56 AM - 3:26 PM

Minor Periods

7:25 PM - 8:55 PM
6:08 AM - 7:38 AM

Action Rating: 5 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: 6:13 AM
Sun Transit: 1:00 PM
Sunset: 7:45 PM
Daylight: 13 hrs 32 mins
Moonrise: 8:10 PM
Moon Transit: 1:45 AM
Moonset: 7:51 AM
Moon Phase: Full
Moon Illumination: 95.0%

Best Times for Fishing or Hunting

Major Periods

1:15 AM - 3:45 AM
12:00 AM - 12:00 AM

Minor Periods

7:40 PM - 9:10 PM
7:21 AM - 8:51 AM

Action Rating: 4 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: 6:13 AM
Sun Transit: 1:00 PM
Sunset: 7:45 PM
Daylight: 13 hrs 32 mins
Moonrise: 8:10 PM
Moon Transit: 1:45 AM
Moonset: 7:51 AM
Moon Phase: Full
Moon Illumination: 95.0%

Best Times for Fishing or Hunting

Major Periods

1:15 AM - 3:45 AM
12:00 AM - 12:00 AM

Minor Periods

7:40 PM - 9:10 PM
7:21 AM - 8:51 AM

Action Rating: 4 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: 6:14 AM
Sun Transit: 1:00 PM
Sunset: 7:43 PM
Daylight: 13 hrs 29 mins
Moonrise: 8:26 PM
Moon Transit: 12:00 AM
Moonset: 9:05 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

7:56 PM - 9:26 PM
8:35 AM - 10:05 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: 6:14 AM
Sun Transit: 1:00 PM
Sunset: 7:43 PM
Daylight: 13 hrs 29 mins
Moonrise: 8:26 PM
Moon Transit: 12:00 AM
Moonset: 9:05 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

7:56 PM - 9:26 PM
8:35 AM - 10:05 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: 6:16 AM
Sun Transit: 1:00 PM
Sunset: 7:41 PM
Daylight: 13 hrs 25 mins
Moonrise: 8:45 PM
Moon Transit: 3:15 AM
Moonset: 10:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

2:45 AM - 5:15 AM
3:11 PM - 5:41 PM

Minor Periods

8:15 PM - 9:45 PM
9:52 AM - 11:22 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: 6:16 AM
Sun Transit: 1:00 PM
Sunset: 7:41 PM
Daylight: 13 hrs 25 mins
Moonrise: 8:45 PM
Moon Transit: 3:15 AM
Moonset: 10:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

2:45 AM - 5:15 AM
3:11 PM - 5:41 PM

Minor Periods

8:15 PM - 9:45 PM
9:52 AM - 11:22 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: 6:17 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

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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