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

Current Water Temperature

32.0°F

Measurement Time: Monday, July 6, 2026, 6:57 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

68.4°F
Clear
Clear
58.5°F
68.4°F
62%
WSW 4.7 mph
9.9 mph
68.4°F
54.9°F
0 in
0%
6 mi
1015 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 75°F
L: 56°F
Sunny
Tue
H: 81°F
L: 65°F
Patchy rain nearby
Wed
H: 70°F
L: 59°F
Patchy rain nearby
Thu
H: 71°F
L: 58°F
Sunny
Fri
H: 70°F
L: 59°F

Air Quality

AQI: 1 - Good
PM2.5: 5.8 μg/m3
PM10: 6.3 μg/m3
Carbon Monoxide: 113 μg/m3
Nitrogen Dioxide: 2.7 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 73 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 1:03 PM
Sunset: 9:00 PM
Daylight: 15 hrs 53 mins
Moonrise: 12:40 AM
Moon Transit: 5:48 AM
Moonset: 12:12 AM
Moon Phase: Last Quarter
Moon Illumination: 48.6%

Best Times for Fishing or Hunting

Major Periods

5:18 AM - 7:48 AM
11:45 AM - 2:15 PM

Minor Periods

11:42 AM - 1:12 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

yellow watch - severe thunderstorm - in effect

Effective: Mon July 6, 2026, 6:11 PM
Expires: Tue July 7, 2026, 1:02 AM

Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain. There is also a risk of a tornado. What: Wind gusts up to 110 km/h Loonie to ping pong ball sized hail Heavy rainfall up to 50 mm When: Continuing this evening. Additional information: Severe thunderstorms ahead of and along a cold front may continue this evening. There is also the risk of a tornado. ### Local utility outages are possible. There is a risk of injury. Strong wind gusts can damage trees, buildings and overturn vehicles. Severe thunderstorm watches are issued when conditions are favourable for the development of thunderstorms capable of producing damaging hail, wind or rain. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm. For more information: https://www.ontario.ca/page/be-prepared-emergency.

When thunder roars, go indoors! Lightning kills and injures Canadians every year. Secure loose objects. Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.


Monday, July 6, 2026

Weather Forecast

Sunny
74.5°F
55.9°F
65.6°F
51%
0 in
2%
0%
5.4 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 2.8 μg/m3
PM10: 3.37 μg/m3
Carbon Monoxide: 99.58 μg/m3
Nitrogen Dioxide: 2.45 μg/m3
Sulphur Dioxide: 0.77 μg/m3
Ozone: 66.58 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 1:03 PM
Sunset: 9:00 PM
Daylight: 15 hrs 53 mins
Moonrise: 12:40 AM
Moon Transit: 5:48 AM
Moonset: 12:12 AM
Moon Phase: Last Quarter
Moon Illumination: 48.6%

Best Times for Fishing or Hunting

Major Periods

5:18 AM - 7:48 AM
11:45 AM - 2:15 PM

Minor Periods

11:42 AM - 1:12 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 7, 2026

Weather Forecast

Sunny
81.3°F
65.3°F
70°F
69%
0 in
9%
0%
8.3 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 3.5 μg/m3
PM10: 3.75 μg/m3
Carbon Monoxide: 112.79 μg/m3
Nitrogen Dioxide: 1.58 μg/m3
Sulphur Dioxide: 0.39 μg/m3
Ozone: 79.58 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 1:03 PM
Sunset: 8:59 PM
Daylight: 15 hrs 52 mins
Moonrise: 12:56 AM
Moon Transit: 6:32 AM
Moonset: 1:26 PM
Moon Phase: Last Quarter
Moon Illumination: 37.3%

Best Times for Fishing or Hunting

Major Periods

6:02 AM - 8:32 AM
6:28 PM - 8:58 PM

Minor Periods

12:56 AM - 2:26 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, July 8, 2026

Weather Forecast

Patchy rain nearby
70.3°F
58.6°F
63.2°F
81%
0.08 in
66%
0%
7.6 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 6.11 μg/m3
PM10: 7.38 μg/m3
Carbon Monoxide: 107.21 μg/m3
Nitrogen Dioxide: 3.22 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 69.58 μg/m3

Astronomical

Sunrise: 5:09 AM
Sun Transit: 1:03 PM
Sunset: 8:59 PM
Daylight: 15 hrs 50 mins
Moonrise: 12:13 AM
Moon Transit: 7:20 AM
Moonset: 2:46 PM
Moon Phase: Last Quarter
Moon Illumination: 26.8%

Best Times for Fishing or Hunting

Major Periods

6:50 AM - 9:20 AM
7:18 PM - 9:48 PM

Minor Periods

2:16 PM - 3:46 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 9, 2026

Weather Forecast

Patchy rain nearby
70.5°F
57.6°F
63.1°F
77%
0.01 in
24%
0%
4.9 mph
7.3


Air Quality

AQI: 1 - Good
PM2.5: 5.48 μg/m3
PM10: 6.46 μg/m3
Carbon Monoxide: 131.88 μg/m3
Nitrogen Dioxide: 3.33 μg/m3
Sulphur Dioxide: 0.82 μg/m3
Ozone: 66.25 μg/m3

Astronomical

Sunrise: 5:09 AM
Sun Transit: 1:04 PM
Sunset: 8:58 PM
Daylight: 15 hrs 49 mins
Moonrise: 12:34 AM
Moon Transit: 8:11 AM
Moonset: 4:09 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

7:41 AM - 10:11 AM
8:12 PM - 10:42 PM

Minor Periods

3:39 PM - 5:09 PM
12:04 AM - 1:34 AM

Action Rating: 2 out of 5

Friday, July 10, 2026

Weather Forecast

Sunny
70.3°F
58.7°F
63.9°F
64%
0 in
5%
0%
5.4 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 3.78 μg/m3
PM10: 4.2 μg/m3
Carbon Monoxide: 153.33 μg/m3
Nitrogen Dioxide: 1.74 μg/m3
Sulphur Dioxide: 0.44 μg/m3
Ozone: 75.54 μg/m3

Astronomical

Sunrise: 5:10 AM
Sun Transit: 1:04 PM
Sunset: 8:58 PM
Daylight: 15 hrs 47 mins
Moonrise: 1:01 AM
Moon Transit: 9:08 AM
Moonset: 5:34 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

8:38 AM - 11:08 AM
9:12 PM - 11:42 PM

Minor Periods

5:04 PM - 6:34 PM
12:31 AM - 2:01 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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