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

Current Water Temperature

32.7°F

Measurement Time: Saturday, March 14, 2026, 8:15 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

16.6°F
Clear
Clear
6.5°F
16.6°F
64%
NNE 4.3 mph
8 mph
6.5°F
6.8°F
0 in
0%
6 mi
1021 mbar
0

Five Day Weather Forecast

Moderate or heavy snow showers
Sun
H: 24°F
L: 12°F
Overcast
Mon
H: 17°F
L: 3°F
Moderate or heavy snow showers
Tue
H: 16°F
L: 2°F
Moderate or heavy snow showers
Wed
H: 27°F
L: 16°F
Freezing fog
Thu
H: 32°F
L: 28°F

Air Quality

PM2.5: 3.85 μg/m3
PM10: 4.85 μg/m3
Carbon Monoxide: 186.85 μg/m3
Nitrogen Dioxide: 1.95 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 91 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:00 AM
Sunset: 7:04 PM
Daylight: 11 hrs 53 mins
Moonrise: 5:57 AM
Moon Transit: 10:29 AM
Moonset: 3:11 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:59 AM - 12:29 AM

Minor Periods

2:41 PM - 4:11 PM
5:27 AM - 6:57 AM

Action Rating: 3 out of 5

Wind Advisory issued March 14 at 5:13PM CDT until March 16 at 1:00PM CDT by NWS Duluth MN

Effective: Sat March 14, 2026, 5:13 PM
Expires: Sun March 15, 2026, 7:00 AM

* WHAT...North winds 15 to 30 mph with gusts of 45 to 55 mph expected. * WHERE...Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...From 7 PM Sunday to 1 PM CDT Monday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...There is a 20 to 40 percent chance for wind gusts up to 60 mph for southern Cook County. If wind forecasts continue to trend stronger, a High Wind Warning may be needed.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.
Sunday, March 15, 2026

Weather Forecast

Moderate or heavy snow showers
23.5°F
11.8°F
17.5°F
76%
0.1 in
63%
10%
23.5 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 3.7 μg/m3
PM10: 4.51 μg/m3
Carbon Monoxide: 181.77 μg/m3
Nitrogen Dioxide: 2.68 μg/m3
Sulphur Dioxide: 1.66 μg/m3
Ozone: 88.6 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:00 AM
Sunset: 7:04 PM
Daylight: 11 hrs 53 mins
Moonrise: 5:57 AM
Moon Transit: 10:29 AM
Moonset: 3:11 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:59 AM - 12:29 AM

Minor Periods

2:41 PM - 4:11 PM
5:27 AM - 6:57 AM

Action Rating: 3 out of 5

Monday, March 16, 2026

Weather Forecast

Overcast
17.1°F
3.4°F
8.8°F
59%
0 in
0%
0%
27.3 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 2.17 μg/m3
PM10: 2.63 μg/m3
Carbon Monoxide: 168.57 μg/m3
Nitrogen Dioxide: 1.17 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 80.44 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:00 AM
Sunset: 7:06 PM
Daylight: 11 hrs 56 mins
Moonrise: 6:18 AM
Moon Transit: 11:16 AM
Moonset: 4:28 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:46 AM - 1:16 PM

Minor Periods

3:58 PM - 5:28 PM
5:48 AM - 7:18 AM

Action Rating: 3 out of 5

Tuesday, March 17, 2026

Weather Forecast

Moderate or heavy snow showers
16.3°F
2.3°F
10.1°F
71%
0.1 in
83%
8%
15.7 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 1.65 μg/m3
PM10: 1.96 μg/m3
Carbon Monoxide: 159.83 μg/m3
Nitrogen Dioxide: 1.19 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 90.32 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:00 AM
Sunset: 7:07 PM
Daylight: 12 hrs mins
Moonrise: 6:35 AM
Moon Transit: 12:03 AM
Moonset: 5:45 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:33 AM - 2:03 PM

Minor Periods

5:15 PM - 6:45 PM
6:05 AM - 7:35 AM

Action Rating: 5 out of 5

Wednesday, March 18, 2026

Weather Forecast

Moderate or heavy snow showers
26.7°F
16.3°F
22.2°F
91%
0.14 in
87%
64%
11 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 2.18 μg/m3
PM10: 2.38 μg/m3
Carbon Monoxide: 173 μg/m3
Nitrogen Dioxide: 1.49 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 96.54 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:00 AM
Sunset: 7:09 PM
Daylight: 12 hrs 3 mins
Moonrise: 6:51 AM
Moon Transit: 12:49 AM
Moonset: 7:03 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:19 AM - 2:49 PM

Minor Periods

6:33 PM - 8:03 PM
6:21 AM - 7:51 AM

Action Rating: 3 out of 5

Thursday, March 19, 2026

Weather Forecast

Freezing fog
31.7°F
27.5°F
29.7°F
99%
0.08 in
62%
52%
3.8 mph
1


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: 7:03 AM
Sun Transit: 12:00 AM
Sunset: 7:10 PM
Daylight: 12 hrs 7 mins
Moonrise: 7:07 AM
Moon Transit: 12:31 AM
Moonset: 8:24 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

12:01 AM - 2:31 AM
12:01 AM - 2:31 AM

Minor Periods

7:54 PM - 9:24 PM
6:37 AM - 8:07 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.

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