Weather for Grand Portage, Minnesota
Current Weather
Humidity: 94%
Feels Like: 68.7°F
Wind: WSW 4.9 mph
Wind Gusts: 10.3 mph
Precipitation: 0 in
Cloud Cover: 50%
Visibility: 14 mi
UV Index: 0
Five Day Weather Forecast
Thu
H: 74°F
L: 61°F
Fri
H: 74°F
L: 66°F
Sat
H: 67°F
L: 62°F
Sun
H: 73°F
L: 63°F
Mon
H: 79°F
L: 60°F
Air Quality
Nitrogen Dioxide: 1.67 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 93 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:25 PM
Daylight: 14 hrs 42 mins
Moon Transit: 12:00 AM
Moonset: 3:13 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:17 AM - 1:47 PM
Minor Periods
7:33 PM - 9:03 PM2:43 AM - 4:13 AM
Action Rating: 2 out of 5
Heat Advisory issued August 7 at 1:01PM CDT until August 7 at 8:00PM CDT by NWS Duluth MN
Effective: Thu August 7, 2025, 6:01 PM
Expires: Fri August 8, 2025, 1:00 AM
* WHAT...Heat index values up to 93. * WHERE...In Minnesota, Crow Wing, Aitkin, Koochiching, Cass, Itasca, Carlton, St. Louis, North Cook and Lake Counties. In Wisconsin, Price County. This includes the Tribal Lands of the Fond du Lac Band, the Mille Lacs Band, Big Sandy Lake and, East Lake areas and the Bois Forte Band, Deer Creek, Lake Vermilion and, Nett Lake areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...Until 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Heat Advisory issued August 7 at 1:01PM CDT until August 7 at 8:00PM CDT by NWS Duluth MN
Effective: Thu August 7, 2025, 6:01 PM
Expires: Fri August 8, 2025, 1:00 AM
* WHAT...Heat index values up to 93. * WHERE...In Minnesota, Crow Wing, Aitkin, Koochiching, Cass, Itasca, Carlton, St. Louis, North Cook and Lake Counties. In Wisconsin, Price County. This includes the Tribal Lands of the Fond du Lac Band, the Mille Lacs Band, Big Sandy Lake and, East Lake areas and the Bois Forte Band, Deer Creek, Lake Vermilion and, Nett Lake areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...Until 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Weather Forecast
Average Temperature: 67.7°F
Average Humidity: 93%
Wind: 11.6 mph
UV Index: 1.8
Air Quality
Nitrogen Dioxide: 2.49 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 94.88 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:25 PM
Daylight: 14 hrs 42 mins
Moon Transit: 12:00 AM
Moonset: 3:13 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:17 AM - 1:47 PM
Minor Periods
7:33 PM - 9:03 PM2:43 AM - 4:13 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 69°F
Average Humidity: 95%
Wind: 10.7 mph
UV Index: 1.4
Air Quality
Nitrogen Dioxide: 2.86 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 93.72 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:23 PM
Daylight: 14 hrs 39 mins
Moon Transit: 12:12 AM
Moonset: 4:30 AM
Moon Phase: Full
Moon Illumination: 100.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:10 AM - 2:40 PM
Minor Periods
7:59 PM - 9:29 PM4:00 AM - 5:30 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: 65°F
Average Humidity: 96%
Wind: 11.6 mph
UV Index: 1.2
Air Quality
Nitrogen Dioxide: 2.55 μg/m3
Sulphur Dioxide: 0.92 μg/m3
Ozone: 113.6 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:22 PM
Daylight: 14 hrs 36 mins
Moon Transit: 1:03 AM
Moonset: 5:49 AM
Moon Phase: Full
Moon Illumination: 99.0%
Best Times for Fishing or Hunting
Major Periods
12:33 AM - 3:03 AM1:01 PM - 3:31 PM
Minor Periods
8:20 PM - 9:50 PM5:19 AM - 6:49 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: 67.9°F
Average Humidity: 84%
Wind: 12.8 mph
UV Index: 1.4
Air Quality
Nitrogen Dioxide: 2.38 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 91.64 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:20 PM
Daylight: 14 hrs 33 mins
Moon Transit: 1:53 AM
Moonset: 7:10 AM
Moon Phase: Full
Moon Illumination: 95.5%
Best Times for Fishing or Hunting
Major Periods
1:23 AM - 3:53 AM1:50 PM - 4:20 PM
Minor Periods
8:37 PM - 10:07 PM6:40 AM - 8:10 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 69.7°F
Average Humidity: 69%
Wind: 12.5 mph
UV Index: 0.8
Air Quality
Nitrogen Dioxide: 1.84 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 94.38 μg/m3
Astronomical
Sun Transit: 1:03 PM
Sunset: 8:18 PM
Daylight: 14 hrs 30 mins
Moon Transit: 2:41 AM
Moonset: 8:30 AM
Moon Phase: Waning Gibbous
Moon Illumination: 89.6%
Best Times for Fishing or Hunting
Major Periods
2:11 AM - 4:41 AM12:00 AM - 12:00 AM
Minor Periods
8:53 PM - 10:23 PM8:00 AM - 9:30 AM
Action Rating: 2 out of 5