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

Current Water Temperature

32.4°F

Measurement Time: Sunday, January 4, 2026, 1:15 PM CST

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

19.9°F
Light snow
Light snow
11.8°F
20.6°F
93%
E 6 mph
10.4 mph
12.5°F
18.3°F
0.1 in
100%
1 mi
1006 mbar
0

Five Day Weather Forecast

Moderate or heavy snow showers
Sun
H: 18°F
L: -0°F
Moderate snow
Mon
H: 26°F
L: 18°F
Overcast
Tue
H: 30°F
L: 27°F
Cloudy
Wed
H: 29°F
L: 21°F
Sunny
Thu
H: 35°F
L: 21°F

Air Quality

AQI: 1 - Good
PM2.5: 1.75 μg/m3
PM10: 1.85 μg/m3
Carbon Monoxide: 158.85 μg/m3
Nitrogen Dioxide: 2.15 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 77 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 12:03 AM
Sunset: 4:20 PM
Daylight: 8 hrs 32 mins
Moonrise: 5:54 PM
Moon Transit: 12:57 AM
Moonset: 9:09 AM
Moon Phase: Full
Moon Illumination: 98.1%

Best Times for Fishing or Hunting

Major Periods

12:27 AM - 2:57 AM
12:59 AM - 3:29 PM

Minor Periods

5:24 PM - 6:54 PM
8:39 AM - 10:09 AM

Action Rating: 3 out of 5

Winter Weather Advisory issued January 4 at 2:31AM CST until January 5 at 12:00AM CST by NWS Duluth MN

Effective: Sun January 4, 2026, 2:31 AM
Expires: Sun January 4, 2026, 2:45 PM

* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches. * WHERE...Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...From 11 AM this morning to midnight CST tonight. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Heavy snowfall rates up to 1 inch per hour late this afternoon into the evening could lead to visibility of one quarter of a mile or less.

Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information.


Winter Weather Advisory issued January 4 at 9:45AM CST until January 5 at 12:00AM CST by NWS Duluth MN

Effective: Sun January 4, 2026, 9:45 AM
Expires: Mon January 5, 2026, 12:00 AM

* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches. * WHERE...Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Heavy snowfall rates up to 1 inch per hour late this afternoon into the evening could lead to visibility of one quarter of a mile or less.

Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information.


Winter Weather Advisory issued January 4 at 3:20PM CST until January 5 at 12:00AM CST by NWS Duluth MN

Effective: Sun January 4, 2026, 3:20 PM
Expires: Mon January 5, 2026, 12:00 AM

* WHAT...Snow. Additional snow accumulations between 1 and 3 inches. * WHERE...Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Heavy snowfall rates up to 1 inch per hour late this afternoon into the evening will lead to visibility of one quarter of a mile or less.

Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information.
Sunday, January 4, 2026

Weather Forecast

Moderate or heavy snow showers
17.6°F
-0.2°F
9.5°F
79%
0.32 in
72%
43%
9.6 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 2.08 μg/m3
PM10: 2.24 μg/m3
Carbon Monoxide: 152.77 μg/m3
Nitrogen Dioxide: 2.04 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 73.44 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 12:03 AM
Sunset: 4:20 PM
Daylight: 8 hrs 32 mins
Moonrise: 5:54 PM
Moon Transit: 12:57 AM
Moonset: 9:09 AM
Moon Phase: Full
Moon Illumination: 98.1%

Best Times for Fishing or Hunting

Major Periods

12:27 AM - 2:57 AM
12:59 AM - 3:29 PM

Minor Periods

5:24 PM - 6:54 PM
8:39 AM - 10:09 AM

Action Rating: 3 out of 5

Monday, January 5, 2026

Weather Forecast

Moderate snow
26.2°F
18°F
23.3°F
89%
0.04 in
81%
20%
6.3 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 1.68 μg/m3
PM10: 1.7 μg/m3
Carbon Monoxide: 166.21 μg/m3
Nitrogen Dioxide: 2.4 μg/m3
Sulphur Dioxide: 1.89 μg/m3
Ozone: 75 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 12:04 AM
Sunset: 4:21 PM
Daylight: 8 hrs 33 mins
Moonrise: 7:18 PM
Moon Transit: 1:55 AM
Moonset: 9:37 AM
Moon Phase: Full
Moon Illumination: 93.7%

Best Times for Fishing or Hunting

Major Periods

1:25 AM - 3:55 AM
1:54 PM - 4:24 PM

Minor Periods

6:48 PM - 8:18 PM
9:07 AM - 10:37 AM

Action Rating: 4 out of 5

Tuesday, January 6, 2026

Weather Forecast

Overcast
30.2°F
26.7°F
28.4°F
91%
0 in
0%
0%
5.8 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 2.4 μg/m3
PM10: 2.41 μg/m3
Carbon Monoxide: 190.25 μg/m3
Nitrogen Dioxide: 3.59 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 55.72 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 12:04 AM
Sunset: 4:22 PM
Daylight: 8 hrs 35 mins
Moonrise: 8:38 PM
Moon Transit: 2:47 AM
Moonset: 9:58 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

2:17 AM - 4:47 AM
2:44 PM - 5:14 PM

Minor Periods

8:08 PM - 9:38 PM
9:28 AM - 10:58 AM

Action Rating: 2 out of 5

Wednesday, January 7, 2026

Weather Forecast

Cloudy
29.3°F
21.2°F
25.1°F
87%
0 in
0%
0%
9.4 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 1.74 μg/m3
PM10: 1.83 μg/m3
Carbon Monoxide: 170.31 μg/m3
Nitrogen Dioxide: 3.5 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 56.64 μg/m3

Astronomical

Sunrise: 7:47 AM
Sun Transit: 12:05 AM
Sunset: 4:23 PM
Daylight: 8 hrs 36 mins
Moonrise: 9:52 PM
Moon Transit: 3:34 AM
Moonset: 10:15 AM
Moon Phase: Waning Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

3:04 AM - 5:34 AM
3:30 PM - 6:00 PM

Minor Periods

9:22 PM - 10:52 PM
9:45 AM - 11:15 AM

Action Rating: 2 out of 5

Thursday, January 8, 2026

Weather Forecast

Sunny
34.6°F
20.5°F
27.2°F
87%
0 in
0%
0%
11.4 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 6.1 μg/m3
PM10: 6.4 μg/m3
Carbon Monoxide: 199.04 μg/m3
Nitrogen Dioxide: 6.39 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 52.85 μg/m3

Astronomical

Sunrise: 7:47 AM
Sun Transit: 12:05 AM
Sunset: 4:25 PM
Daylight: 8 hrs 38 mins
Moonrise: 11:03 PM
Moon Transit: 4:18 AM
Moonset: 10:30 AM
Moon Phase: Waning Gibbous
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

3:48 AM - 6:18 AM
4:11 PM - 6:41 PM

Minor Periods

12:00 AM - 12:00 AM
10:00 AM - 11:30 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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