Water Temperature of Grand Marais Harbor in Grand Marais, MN
Current Water Temperature
Measurement Time: Friday, June 6, 2025, 6:18 AM CDT
Temperature Locations
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Local Points of Interest
Lake Superior; Grand Marais Campground and Marina; Grand Marais Municipal ArenaSponsored Content
Station Name: 9099090 - Grand Marais, MN
Station Type: Fixed
Data Source: National Data Buoy Center
Elevation Above Sea Level: 617 feet / 188 meters
Nearest Address:
391 MN-61
Grand Marais, MN 55604
Cook County
GPS Coordinates: 47.749, -90.341
Nearby Water Temperatures
Lake Superior, Grand Marais, MN (0.6 mi)Poplar River, Lutsen, MN (18.8 mi)
Grand Portage River, Grand Portage, MN (33.9 mi)
Lake Superior, Lake Superior, MI (38.4 mi)
Baptism River, Illgen City, MN (49.1 mi)
Kawishiwi River, Ely, MN (56.7 mi)
Washington Creek, Windigo, MI (56.7 mi)
Dunka River, Babbitt, MN (70.8 mi)
Dunka River, Babbitt, MN (71.1 mi)
Partrige River, Babbitt, MN (74.2 mi)
Lake Superior, Two Harbors, MN (79.9 mi)
Saint Louis River, Hoyt Lakes, MN (81.3 mi)
Chequamegon Bay, Ashland, WI (81.3 mi)
Presque Isle River, Tula, MI (87.2 mi)
Lake Superior, Calumet, MI (87.4 mi)
Weather for Grand Marais, Minnesota
Current Weather

Humidity: 55%
Feels Like: 58.4°F
Wind: S 5.8 mph
Wind Gusts: 8.7 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 1.9
Five Day Weather Forecast

Fri
H: 63°F
L: 44°F

Sat
H: 60°F
L: 49°F

Sun
H: 57°F
L: 45°F

Mon
H: 54°F
L: 44°F

Tue
H: 60°F
L: 47°F
Air Quality
Nitrogen Dioxide: 2.35 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 87 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:57 PM
Daylight: 15 hrs 52 mins
Moon Transit: 9:46 PM
Moonset: 2:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 80.3%
Best Times for Fishing or Hunting
Major Periods
8:52 AM - 11:22 AM9:16 PM - 11:46 PM
Minor Periods
4:09 PM - 5:39 PM1:58 AM - 3:28 AM
Action Rating: 3 out of 5
Air Quality Alert issued June 5 at 2:47PM CDT by NWS Duluth MN
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Thu June 5, 2025, 2:47 PM
Expires: Fri June 6, 2025, 7:00 PM
* WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Red or Unhealthy category. * WHERE...North central and northeast Minnesota. * WHEN...Until 7 PM CDT Friday. * IMPACTS...Some members of the general public may experience health effects. Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, may experience health effects. * ADDITIONAL DETAILS...An east-to-west band of heavy Canadian wildfire smoke will drift further south into northern Minnesota behind a cold front through the day and evening on Thursday. Most of this smoke will gradually retreat back north into Canada and disperse throughout Friday afternoon, but there is some potential for smoke to linger near the North Shore of Lake Superior into the evening.
Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should avoid prolonged or heavy exertion. The general public should limit prolonged or heavy exertion. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible. Keep windows closed overnight to prevent smoke from getting indoors.
Air Quality Alert issued June 5 at 2:47PM CDT by NWS Duluth MN
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Thu June 5, 2025, 2:47 PM
Expires: Fri June 6, 2025, 7:00 PM
* WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Red or Unhealthy category. * WHERE...North central and northeast Minnesota. * WHEN...Until 7 PM CDT Friday. * IMPACTS...Some members of the general public may experience health effects. Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, may experience health effects. * ADDITIONAL DETAILS...An east-to-west band of heavy Canadian wildfire smoke will drift further south into northern Minnesota behind a cold front through the day and evening on Thursday. Most of this smoke will gradually retreat back north into Canada and disperse throughout Friday afternoon, but there is some potential for smoke to linger near the North Shore of Lake Superior into the evening.
Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should avoid prolonged or heavy exertion. The general public should limit prolonged or heavy exertion. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible. Keep windows closed overnight to prevent smoke from getting indoors.
Air Quality Alert issued June 5 at 2:47PM CDT by NWS Duluth MN
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Thu June 5, 2025, 2:47 PM
Expires: Fri June 6, 2025, 7:00 PM
* WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Red or Unhealthy category. * WHERE...North central and northeast Minnesota. * WHEN...Until 7 PM CDT Friday. * IMPACTS...Some members of the general public may experience health effects. Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, may experience health effects. * ADDITIONAL DETAILS...An east-to-west band of heavy Canadian wildfire smoke will drift further south into northern Minnesota behind a cold front through the day and evening on Thursday. Most of this smoke will gradually retreat back north into Canada and disperse throughout Friday afternoon, but there is some potential for smoke to linger near the North Shore of Lake Superior into the evening.
Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should avoid prolonged or heavy exertion. The general public should limit prolonged or heavy exertion. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible. Keep windows closed overnight to prevent smoke from getting indoors.
Air Quality Alert issued June 5 at 2:47PM CDT by NWS Duluth MN
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Thu June 5, 2025, 2:47 PM
Expires: Fri June 6, 2025, 7:00 PM
* WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Red or Unhealthy category. * WHERE...North central and northeast Minnesota. * WHEN...Until 7 PM CDT Friday. * IMPACTS...Some members of the general public may experience health effects. Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, may experience health effects. * ADDITIONAL DETAILS...An east-to-west band of heavy Canadian wildfire smoke will drift further south into northern Minnesota behind a cold front through the day and evening on Thursday. Most of this smoke will gradually retreat back north into Canada and disperse throughout Friday afternoon, but there is some potential for smoke to linger near the North Shore of Lake Superior into the evening.
Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should avoid prolonged or heavy exertion. The general public should limit prolonged or heavy exertion. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible. Keep windows closed overnight to prevent smoke from getting indoors.
Weather Forecast
Average Temperature: 53.9°F
Average Humidity: 76%
Wind: 7.2 mph
UV Index: 1
Air Quality
Nitrogen Dioxide: 3.32 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 88.8 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:57 PM
Daylight: 15 hrs 52 mins
Moon Transit: 9:46 PM
Moonset: 2:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 80.3%
Best Times for Fishing or Hunting
Major Periods
8:52 AM - 11:22 AM9:16 PM - 11:46 PM
Minor Periods
4:09 PM - 5:39 PM1:58 AM - 3:28 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 53.8°F
Average Humidity: 68%
Wind: 5.8 mph
UV Index: 1.7
Air Quality
Nitrogen Dioxide: 3.3 μg/m3
Sulphur Dioxide: 0.89 μg/m3
Ozone: 97.2 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:57 PM
Daylight: 15 hrs 53 mins
Moon Transit: 10:28 PM
Moonset: 2:44 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.5%
Best Times for Fishing or Hunting
Major Periods
9:34 AM - 12:04 AM12:00 AM - 12:00 AM
Minor Periods
5:17 PM - 6:47 PM2:14 AM - 3:44 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 51°F
Average Humidity: 90%
Wind: 13.2 mph
UV Index: 0.6
Air Quality
Nitrogen Dioxide: 2.11 μg/m3
Sulphur Dioxide: 0.22 μg/m3
Ozone: 92.56 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:58 PM
Daylight: 15 hrs 54 mins
Moon Transit: 11:14 PM
Moonset: 3:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 94.7%
Best Times for Fishing or Hunting
Major Periods
10:18 AM - 12:48 AM12:00 AM - 12:00 AM
Minor Periods
6:26 PM - 7:56 PM2:32 AM - 4:02 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 48.7°F
Average Humidity: 89%
Wind: 6 mph
UV Index: 0.5
Air Quality
Nitrogen Dioxide: 3.57 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 72.64 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:59 PM
Daylight: 15 hrs 55 mins
Moon Transit: 12:00 AM
Moonset: 3:25 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.6%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:05 AM - 1:35 PM
Minor Periods
7:35 PM - 9:05 PM2:55 AM - 4:25 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 54°F
Average Humidity: 78%
Wind: 8.7 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 1.95 μg/m3
Sulphur Dioxide: 0.1 μg/m3
Ozone: 80.77 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:59 PM
Daylight: 15 hrs 56 mins
Moon Transit: 12:03 AM
Moonset: 3:57 AM
Moon Phase: Full
Moon Illumination: 100.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:56 AM - 2:26 PM
Minor Periods
8:41 PM - 10:11 PM3:27 AM - 4:57 AM
Action Rating: 5 out of 5