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

Current Water Temperature

32.9°F

Measurement Time: Sunday, March 15, 2026, 3:15 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

12°F
Clear
Clear
-4.8°F
12°F
70%
NNE 17.2 mph
26.5 mph
-4.8°F
3.5°F
0 in
5%
6 mi
1020 mbar
0

Five Day Weather Forecast

Light freezing rain
Sun
H: 24°F
L: 7°F
Sunny
Mon
H: 17°F
L: -2°F
Partly Cloudy
Tue
H: 15°F
L: 1°F
Overcast
Wed
H: 33°F
L: 18°F
Fog
Thu
H: 36°F
L: 29°F

Air Quality

AQI: 1 - Good
PM2.5: 2.55 μg/m3
PM10: 3.25 μg/m3
Carbon Monoxide: 189.85 μg/m3
Nitrogen Dioxide: 1.15 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 80 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

High Wind Warning issued March 15 at 2:56PM CDT until March 16 at 2:00PM CDT by NWS Duluth MN

Effective: Sun March 15, 2026, 2:56 PM
Expires: Mon March 16, 2026, 3:00 AM

* WHAT...North winds 15 to 25 mph with gusts up to 60 mph expected. * WHERE...Southern Cook County. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...From 7 PM this evening to 2 PM CDT Monday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive.
Sunday, March 15, 2026

Weather Forecast

Light freezing rain
24.4°F
7.3°F
18.5°F
72%
0.01 in
86%
26%
18.8 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 4.13 μg/m3
PM10: 5.12 μg/m3
Carbon Monoxide: 195.49 μg/m3
Nitrogen Dioxide: 2.61 μg/m3
Sulphur Dioxide: 1.64 μg/m3
Ozone: 91.04 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

Sunny
16.7°F
-2°F
6.3°F
62%
0 in
0%
0%
23.3 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 2.45 μg/m3
PM10: 2.98 μg/m3
Carbon Monoxide: 184.45 μg/m3
Nitrogen Dioxide: 1.16 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 82.16 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

Partly Cloudy
14.7°F
0.7°F
8.8°F
69%
0 in
0%
0%
15.4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 1.71 μg/m3
PM10: 2.01 μg/m3
Carbon Monoxide: 168.45 μg/m3
Nitrogen Dioxide: 1.17 μg/m3
Sulphur Dioxide: 1.52 μg/m3
Ozone: 88.2 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

Overcast
33.3°F
18.1°F
26°F
86%
0 in
0%
0%
13.2 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 3.69 μg/m3
PM10: 3.95 μg/m3
Carbon Monoxide: 171.81 μg/m3
Nitrogen Dioxide: 1.92 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 95.28 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

Fog
35.7°F
28.8°F
33.2°F
99%
0.01 in
88%
11%
7.6 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 7.5 μg/m3
PM10: 7.8 μg/m3
Carbon Monoxide: 193.39 μg/m3
Nitrogen Dioxide: 2.54 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 88.92 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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