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

Current Water Temperature

32.0°F

Measurement Time: Tuesday, May 26, 2026, 7:34 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

71.2°F
Sunny
Sunny
71.2°F
74.6°F
43%
SE 5.6 mph
9.3 mph
71.2°F
49.7°F
0 in
0%
6 mi
1015 mbar
6.5

Five Day Weather Forecast

Sunny
Tue
H: 73°F
L: 56°F
Sunny
Wed
H: 62°F
L: 47°F
Sunny
Thu
H: 60°F
L: 46°F
Patchy rain nearby
Fri
H: 74°F
L: 52°F
Patchy rain nearby
Sat
H: 59°F
L: 49°F

Air Quality

AQI: 1 - Good
PM2.5: 6.05 μg/m3
PM10: 6.65 μg/m3
Carbon Monoxide: 117.85 μg/m3
Nitrogen Dioxide: 1.75 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 80 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 12:55 AM
Sunset: 8:44 PM
Daylight: 15 hrs 36 mins
Moonrise: 4:17 PM
Moon Transit: 9:43 PM
Moonset: 2:43 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.9%

Best Times for Fishing or Hunting

Major Periods

8:55 AM - 11:25 AM
9:13 PM - 11:43 PM

Minor Periods

3:47 PM - 5:17 PM
2:13 AM - 3:43 AM

Action Rating: 3 out of 5

Tuesday, May 26, 2026

Weather Forecast

Sunny
73.2°F
56.1°F
64.1°F
57%
0 in
0%
0%
9.2 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 6.35 μg/m3
PM10: 6.96 μg/m3
Carbon Monoxide: 121.93 μg/m3
Nitrogen Dioxide: 1.78 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 84 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 12:55 AM
Sunset: 8:44 PM
Daylight: 15 hrs 36 mins
Moonrise: 4:17 PM
Moon Transit: 9:43 PM
Moonset: 2:43 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.9%

Best Times for Fishing or Hunting

Major Periods

8:55 AM - 11:25 AM
9:13 PM - 11:43 PM

Minor Periods

3:47 PM - 5:17 PM
2:13 AM - 3:43 AM

Action Rating: 3 out of 5

Wednesday, May 27, 2026

Weather Forecast

Sunny
61.8°F
47.3°F
55.8°F
64%
0 in
0%
0%
10.3 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 4.15 μg/m3
PM10: 4.39 μg/m3
Carbon Monoxide: 121.05 μg/m3
Nitrogen Dioxide: 2.98 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 62.2 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:55 AM
Sunset: 8:46 PM
Daylight: 15 hrs 38 mins
Moonrise: 5:27 PM
Moon Transit: 10:26 PM
Moonset: 2:59 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.7%

Best Times for Fishing or Hunting

Major Periods

9:37 AM - 12:07 AM
12:00 AM - 12:00 AM

Minor Periods

4:57 PM - 6:27 PM
2:29 AM - 3:59 AM

Action Rating: 2 out of 5

Thursday, May 28, 2026

Weather Forecast

Sunny
59.8°F
45.9°F
52.9°F
66%
0 in
0%
0%
7.2 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 4.48 μg/m3
PM10: 4.95 μg/m3
Carbon Monoxide: 116.41 μg/m3
Nitrogen Dioxide: 2.88 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 64.32 μg/m3

Astronomical

Sunrise: 5:06 AM
Sun Transit: 12:56 AM
Sunset: 8:47 PM
Daylight: 15 hrs 40 mins
Moonrise: 6:37 PM
Moon Transit: 11:11 PM
Moonset: 3:16 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.7%

Best Times for Fishing or Hunting

Major Periods

10:21 AM - 12:51 AM
12:00 AM - 12:00 AM

Minor Periods

6:07 PM - 7:37 PM
2:46 AM - 4:16 AM

Action Rating: 2 out of 5

Friday, May 29, 2026

Weather Forecast

Patchy rain nearby
74.2°F
52.1°F
60.5°F
67%
0.01 in
81%
0%
8.5 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 3.64 μg/m3
PM10: 4.17 μg/m3
Carbon Monoxide: 118.59 μg/m3
Nitrogen Dioxide: 2.27 μg/m3
Sulphur Dioxide: 1.14 μg/m3
Ozone: 61.48 μg/m3

Astronomical

Sunrise: 5:06 AM
Sun Transit: 12:56 AM
Sunset: 8:48 PM
Daylight: 15 hrs 42 mins
Moonrise: 7:46 PM
Moon Transit: 11:57 PM
Moonset: 3:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.4%

Best Times for Fishing or Hunting

Major Periods

11:06 AM - 1:36 PM
12:00 AM - 12:00 AM

Minor Periods

7:16 PM - 8:46 PM
3:06 AM - 4:36 AM

Action Rating: 4 out of 5

Saturday, May 30, 2026

Weather Forecast

Patchy rain nearby
58.8°F
48.9°F
54.1°F
79%
0.01 in
89%
0%
7.6 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 4.3 μg/m3
PM10: 5.49 μg/m3
Carbon Monoxide: 128.04 μg/m3
Nitrogen Dioxide: 2.24 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 65.54 μg/m3

Astronomical

Sunrise: 5:05 AM
Sun Transit: 12:56 AM
Sunset: 8:49 PM
Daylight: 15 hrs 44 mins
Moonrise: 8:53 PM
Moon Transit: 12:00 AM
Moonset: 4:03 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:54 AM - 2:24 PM

Minor Periods

8:23 PM - 9:53 PM
3:33 AM - 5:03 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.

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