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

Current Water Temperature

32.0°F

Measurement Time: Tuesday, October 6, 2026, 11:27 AM CDT

Temperature Locations

View Nearby Locations     View All Minnesota Locations     View Locations Near Me

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

66.5°F
Overcast
Conditions: Overcast
Humidity: 54%
Feels Like: 61°F
Wind: WNW 9.6 mph
Wind Gusts: 20.1 mph
Pressure: 29.57 in
Precipitation: 0 in
Cloud Cover: 89%
Visibility: 6 mi
UV Index: 0.5

Weather Forecast

Overcast
Tue
H: 69°F
L: 44°F
Sunny
Wed
H: 63°F
L: 46°F
Overcast
Thu
H: 54°F
L: 43°F
Overcast
Fri
H: 57°F
L: 42°F
Overcast
Sat
H: 72°F
L: 49°F

Air Quality

AQI: 1 - Good
PM2.5: 2.8 μg/m3
PM10: 2.8 μg/m3
Carbon Monoxide: 125 μg/m3
Nitrogen Dioxide: 1.5 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 81 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:46 AM
Sunset: 6:28 PM
Daylight: 11 hrs 23 mins
Moonrise: 2:11 AM
Moon Transit: 9:39 AM
Moonset: 4:51 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:09 AM - 11:39 AM

Minor Periods

4:21 PM - 5:51 PM
1:41 AM - 3:11 AM

Action Rating: 2 out of 5

Small Craft Advisory issued October 6 at 2:49AM CDT until October 6 at 4:00PM CDT by NWS Duluth MN

Effective: Tue October 6, 2026, 2:49 AM
Expires: Tue October 6, 2026, 3:00 PM

* WHAT...South winds 10 to 15 kt with gusts up to 25 kt and waves 2 to 4 ft expected. * WHERE...Grand Portage to Grand Marais MN. * WHEN...Until 4 PM CDT this afternoon. * IMPACTS...Conditions will be hazardous to small craft.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions.


Small Craft Advisory issued October 6 at 1:47PM CDT until October 6 at 4:00PM CDT by NWS Duluth MN

Effective: Tue October 6, 2026, 1:47 PM
Expires: Tue October 6, 2026, 4:00 PM

* WHAT...South winds 10 to 15 kt with gusts up to 25 kt and waves 2 to 4 ft expected. * WHERE...Grand Portage to Grand Marais MN. * WHEN...Until 4 PM CDT this afternoon. * IMPACTS...Conditions will be hazardous to small craft.

Anyone operating a smaller vessel should avoid navigating in hazardous conditions.
Tuesday, October 6, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 55.1°F
Average Humidity: 72%
Chance of Rain: 25%
Wind: 13.2 mph
UV Index: 3.1

Air Quality

AQI: 1 - Good
PM2.5: 2.56 μg/m3
PM10: 2.78 μg/m3
Carbon Monoxide: 117.63 μg/m3
Nitrogen Dioxide: 1.33 μg/m3
Sulphur Dioxide: 0.67 μg/m3
Ozone: 72.13 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:46 AM
Sunset: 6:28 PM
Daylight: 11 hrs 23 mins
Moonrise: 2:11 AM
Moon Transit: 9:39 AM
Moonset: 4:51 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:09 AM - 11:39 AM

Minor Periods

4:21 PM - 5:51 PM
1:41 AM - 3:11 AM

Action Rating: 2 out of 5

Wednesday, October 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 53.6°F
Average Humidity: 62%
Chance of Rain: 19%
Wind: 13.4 mph
UV Index: 2.9

Air Quality

AQI: 1 - Good
PM2.5: 1.18 μg/m3
PM10: 1.23 μg/m3
Carbon Monoxide: 110.33 μg/m3
Nitrogen Dioxide: 0.69 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 69.92 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:46 AM
Sunset: 6:26 PM
Daylight: 11 hrs 19 mins
Moonrise: 3:30 AM
Moon Transit: 10:27 AM
Moonset: 5:09 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:57 AM - 12:27 AM

Minor Periods

4:39 PM - 6:09 PM
3:00 AM - 4:30 AM

Action Rating: 3 out of 5

Thursday, October 8, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 47.9°F
Average Humidity: 62%
Chance of Rain: 10%
Wind: 12.8 mph
UV Index: 2.4

Air Quality

AQI: 1 - Good
PM2.5: 0.75 μg/m3
PM10: 0.95 μg/m3
Carbon Monoxide: 108.83 μg/m3
Nitrogen Dioxide: 0.92 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 63.17 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:46 AM
Sunset: 6:24 PM
Daylight: 11 hrs 16 mins
Moonrise: 4:48 AM
Moon Transit: 11:13 AM
Moonset: 5:25 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:43 AM - 1:13 PM

Minor Periods

4:55 PM - 6:25 PM
4:18 AM - 5:48 AM

Action Rating: 3 out of 5

Friday, October 9, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 48.8°F
Average Humidity: 68%
Chance of Rain: 16%
Wind: 6.5 mph
UV Index: 2.5

Air Quality

AQI: 1 - Good
PM2.5: 4.34 μg/m3
PM10: 5.77 μg/m3
Carbon Monoxide: 123.12 μg/m3
Nitrogen Dioxide: 1.89 μg/m3
Sulphur Dioxide: 0.92 μg/m3
Ozone: 67.25 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:45 AM
Sunset: 6:22 PM
Daylight: 11 hrs 13 mins
Moonrise: 6:03 AM
Moon Transit: 11:58 AM
Moonset: 5:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:28 AM - 1:58 PM

Minor Periods

5:10 PM - 6:40 PM
5:33 AM - 7:03 AM

Action Rating: 4 out of 5

Saturday, October 10, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 59.6°F
Average Humidity: 75%
Chance of Rain: 14%
Wind: 14.3 mph
UV Index: 2.8

Air Quality

AQI: 1 - Good
PM2.5: 7.15 μg/m3
PM10: 8.3 μg/m3
Carbon Monoxide: 171 μg/m3
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 72.38 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:45 AM
Sunset: 6:20 PM
Daylight: 11 hrs 9 mins
Moonrise: 7:17 AM
Moon Transit: 12:43 AM
Moonset: 5:57 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:13 AM - 2:43 PM

Minor Periods

5:27 PM - 6:57 PM
6:47 AM - 8:17 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.

Webcams Near Grand Portage, MN