Water Temperature of Lake Superior in Grand Marais, MN
Current Water Temperature
Measurement Time: Thursday, September 8, 2022, 8:00 AM CDT
Temperature Locations
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Station Name: Grand Marais
Data Source: USGS
Elevation Above Sea Level: 607 feet / 185 meters
Nearest Address:
2nd Street
Grand Marais, MN 55604
Cook County
GPS Coordinates: 47.7517, -90.3283
Nearby Water Temperatures
Grand Marais Harbor, Grand Marais, MN (0.6 mi)Poplar River, Lutsen, MN (19.4 mi)
Grand Portage River, Grand Portage, MN (33.3 mi)
Lake Superior, Lake Superior, MI (38.1 mi)
Baptism River, Illgen City, MN (49.7 mi)
Washington Creek, Windigo, MI (56.1 mi)
Kawishiwi River, Ely, MN (57.2 mi)
Dunka River, Babbitt, MN (71.4 mi)
Dunka River, Babbitt, MN (71.7 mi)
Partrige River, Babbitt, MN (74.9 mi)
Lake Superior, Two Harbors, MN (80.5 mi)
Chequamegon Bay, Ashland, WI (81.7 mi)
Saint Louis River, Hoyt Lakes, MN (81.9 mi)
Lake Superior, Calumet, MI (86.9 mi)
Presque Isle River, Tula, MI (87.2 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: 8:56 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: 8:56 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