Water Temperature of Lake Superior in Grand Marais, MN
Current Water Temperature
Measurement Time: Thursday, April 2, 2026, 6:00 AM CDT
Temperature Locations
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Station Name: Grand Marais
Data Source: USGS
Elevation Above Sea Level: 607 feet
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

Five Day Weather Forecast

Thu
H: 33°F
L: 28°F

Fri
H: 35°F
L: 25°F

Sat
H: 29°F
L: 24°F

Sun
H: 37°F
L: 23°F

Mon
H: 29°F
L: 12°F
Air Quality
Nitrogen Dioxide: 1.18 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 96 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 7:33 PM
Daylight: 12 hrs 55 mins
Moon Transit: 1:07 AM
Moonset: 6:32 AM
Moon Phase: Full
Moon Illumination: 99.5%
Best Times for Fishing or Hunting
Major Periods
12:37 AM - 3:07 AM12:55 AM - 3:25 PM
Minor Periods
8:11 PM - 9:41 PM6:02 AM - 7:32 AM
Action Rating: 3 out of 5
Winter Storm Watch issued April 2 at 1:30AM CDT until April 5 at 1:00AM CDT by NWS Duluth MN
Effective: Thu April 2, 2026, 1:30 AM
Expires: Thu April 2, 2026, 1:30 PM
* WHAT...For the Winter Storm Warning, heavy snow. Additional snow accumulations between 4 and 7 inches. Winds gusting as high as 40 mph. For the Winter Storm Watch, heavy mixed precipitation possible. Total snow and sleet accumulations between 6 and 9 inches and ice accumulations around one tenth of an inch possible. Winds could gust as high as 40 mph. * WHERE...Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...For the Winter Storm Warning, until 7 AM CDT Friday. For the Winter Storm Watch, from Friday afternoon through late Saturday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday morning and evening commutes. * ADDITIONAL DETAILS...The majority of the snowfall is expected to fall during the daytime hours. With the high sun angle and temperatures hovering just above freezing, snowfall will have a difficult time accumulating on warm surfaces leading to a slushy mess.
If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 511 or visit www.511mn.org for Minnesota road information. Monitor the latest forecasts for updates on this situation.
Winter Storm Watch issued April 2 at 1:30AM CDT until April 5 at 1:00AM CDT by NWS Duluth MN
Effective: Thu April 2, 2026, 1:30 AM
Expires: Thu April 2, 2026, 1:30 PM
* WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations between 4 and 6 inches. Winds gusting as high as 35 mph. For the Winter Storm Watch, heavy mixed precipitation possible. Total snow and sleet accumulations between 5 and 8 inches and ice accumulations around one tenth of an inch possible. * WHERE...Central and North St. Louis, and Northern Cook and Lake Counties. This includes the Tribal Lands of the Bois Forte Band, Nett Lake and, Lake Vermilion areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...For the Winter Weather Advisory, until 7 AM CDT Friday. For the Winter Storm Watch, from Friday afternoon through late Saturday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday morning and evening commutes. * ADDITIONAL DETAILS...The majority of the snowfall is expected to fall during the daytime hours. With the high sun angle and temperatures hovering just above freezing, snowfall will have a difficult time accumulating on warm surfaces leading to a slushy mess.
Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information. Monitor the latest forecasts for updates on this situation.
Winter Storm Warning issued April 2 at 1:30AM CDT until April 3 at 7:00AM CDT by NWS Duluth MN
Effective: Thu April 2, 2026, 1:30 AM
Expires: Thu April 2, 2026, 1:30 PM
* WHAT...For the Winter Storm Warning, heavy snow. Additional snow accumulations between 4 and 7 inches. Winds gusting as high as 40 mph. For the Winter Storm Watch, heavy mixed precipitation possible. Total snow and sleet accumulations between 6 and 9 inches and ice accumulations around one tenth of an inch possible. Winds could gust as high as 40 mph. * WHERE...Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...For the Winter Storm Warning, until 7 AM CDT Friday. For the Winter Storm Watch, from Friday afternoon through late Saturday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday morning and evening commutes. * ADDITIONAL DETAILS...The majority of the snowfall is expected to fall during the daytime hours. With the high sun angle and temperatures hovering just above freezing, snowfall will have a difficult time accumulating on warm surfaces leading to a slushy mess.
If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 511 or visit www.511mn.org for Minnesota road information. Monitor the latest forecasts for updates on this situation.
Winter Weather Advisory issued April 2 at 1:30AM CDT until April 3 at 7:00AM CDT by NWS Duluth MN
Effective: Thu April 2, 2026, 1:30 AM
Expires: Thu April 2, 2026, 1:30 PM
* WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations between 4 and 6 inches. Winds gusting as high as 35 mph. For the Winter Storm Watch, heavy mixed precipitation possible. Total snow and sleet accumulations between 5 and 8 inches and ice accumulations around one tenth of an inch possible. * WHERE...Central and North St. Louis, and Northern Cook and Lake Counties. This includes the Tribal Lands of the Bois Forte Band, Nett Lake and, Lake Vermilion areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...For the Winter Weather Advisory, until 7 AM CDT Friday. For the Winter Storm Watch, from Friday afternoon through late Saturday night. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday morning and evening commutes. * ADDITIONAL DETAILS...The majority of the snowfall is expected to fall during the daytime hours. With the high sun angle and temperatures hovering just above freezing, snowfall will have a difficult time accumulating on warm surfaces leading to a slushy mess.
Slow down and use caution while traveling. Call 511 or visit www.511mn.org for Minnesota road information. Monitor the latest forecasts for updates on this situation.
Weather Forecast
Air Quality
Nitrogen Dioxide: 1 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 96.8 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 7:33 PM
Daylight: 12 hrs 55 mins
Moon Transit: 1:07 AM
Moonset: 6:32 AM
Moon Phase: Full
Moon Illumination: 99.5%
Best Times for Fishing or Hunting
Major Periods
12:37 AM - 3:07 AM12:55 AM - 3:25 PM
Minor Periods
8:11 PM - 9:41 PM6:02 AM - 7:32 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.01 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 102.64 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 7:34 PM
Daylight: 12 hrs 58 mins
Moon Transit: 1:50 AM
Moonset: 6:49 AM
Moon Phase: Full
Moon Illumination: 96.6%
Best Times for Fishing or Hunting
Major Periods
1:20 AM - 3:50 AM1:39 PM - 4:09 PM
Minor Periods
9:22 PM - 10:52 PM6:19 AM - 7:49 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.04 μg/m3
Sulphur Dioxide: 0.81 μg/m3
Ozone: 100.76 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 7:36 PM
Daylight: 13 hrs 2 mins
Moon Transit: 2:34 AM
Moonset: 7:08 AM
Moon Phase: Full
Moon Illumination: 91.3%
Best Times for Fishing or Hunting
Major Periods
2:04 AM - 4:34 AM2:24 PM - 4:54 PM
Minor Periods
12:00 AM - 12:00 AM6:38 AM - 8:08 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.01 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 102.16 μg/m3
Astronomical
Sun Transit: 1:03 PM
Sunset: 7:37 PM
Daylight: 13 hrs 5 mins
Moon Transit: 3:21 AM
Moonset: 7:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.9%
Best Times for Fishing or Hunting
Major Periods
2:51 AM - 5:21 AM3:12 PM - 5:42 PM
Minor Periods
7:02 AM - 8:32 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.3 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 98.15 μg/m3
Astronomical
Sun Transit: 1:03 PM
Sunset: 7:38 PM
Daylight: 13 hrs 9 mins
Moon Transit: 4:09 AM
Moonset: 8:03 AM
Moon Phase: Waning Gibbous
Moon Illumination: 74.7%
Best Times for Fishing or Hunting
Major Periods
3:39 AM - 6:09 AM4:02 PM - 6:32 PM
Minor Periods
7:33 AM - 9:03 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
