SXUS43 KMQT 150901 RECMQT MIZ001-152000- Recreational Forecast for Isle Royale National Park National Weather Service Marquette MI 500 AM EDT Wed Apr 15 2026 Isle Royale (SW areas)- Including Greenstone Ridge South, Little Todd Harbor, Minong Ridge, and Windigo- ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...FLOOD WATCH IN EFFECT THROUGH LATE THURSDAY NIGHT... .TODAY...Mostly cloudy. Patchy fog early. Highs around 41. North winds up to 10 mph becoming southeast late. Waves calm to 1 foot. .TONIGHT...Mostly cloudy. Patchy fog. Lows around 34. East winds up to 5 mph. Waves calm to 1 foot. .THURSDAY...Partly sunny. Areas of dense fog through early afternoon. Highs 39 to 44. Northeast winds up to 5 mph becoming south by late morning, then becoming southeast late. Waves calm to 1 foot. .THURSDAY NIGHT...Mostly cloudy. Lows around 35. East winds 5 to 15 mph. Waves calm to 1 foot. .FRIDAY...A 30 percent chance of rain showers by mid afternoon. Mostly cloudy. Highs around 44. East winds 5 to 15 mph. Waves building to 1 to 2 feet. .FRIDAY NIGHT...Rain showers and a chance of thunderstorms through midnight, then a chance of rain and snow showers late. Mostly cloudy. Lows around 29. Chance of precipitation 80 percent. .SATURDAY...Cooler. A chance of rain and snow showers through early afternoon, then a chance of snow showers by mid afternoon. Mostly cloudy. Highs around 35. Chance of precipitation 40 percent. .SATURDAY NIGHT...A chance of snow showers through midnight. Mostly cloudy. Lows around 24. Chance of snow 30 percent. .SUNDAY...Partly sunny. Highs around 35. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows around 28. Highs around 41. .MONDAY NIGHT...Mostly cloudy. Lows around 35. .TUESDAY...Partly cloudy. Highs around 45. && Isle Royale (NE areas)- Including Greenstone Ridge North, Malone Bay, Mount Saginaw, and Rock Harbor- ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...FLOOD WATCH IN EFFECT THROUGH LATE THURSDAY NIGHT... .TODAY...Mostly cloudy. Patchy dense fog early, then patchy fog by late morning. Highs 37 to 42. North winds up to 10 mph becoming east late. Waves calm to 1 foot. .TONIGHT...Mostly cloudy. Patchy fog. Lows around 34. East winds up to 5 mph becoming southeast by midnight, then becoming east late. Waves calm to 1 foot. .THURSDAY...Partly sunny. Areas of dense fog through early afternoon. Highs 37 to 42. North winds up to 5 mph becoming south by late morning, then becoming southeast late. Waves calm to 1 foot. .THURSDAY NIGHT...Mostly cloudy. Lows around 34. East winds up to 10 mph. Waves building to 1 to 2 feet. .FRIDAY...A 20 percent chance of rain showers by mid afternoon. Mostly cloudy. Highs around 42. East winds 5 to 15 mph. Waves building to 3 to 5 feet. .FRIDAY NIGHT...Rain showers through midnight, then a chance of rain and snow showers late. Mostly cloudy. Lows around 30. Chance of precipitation 80 percent. .SATURDAY...A chance of rain and snow showers through early afternoon, then a chance of snow showers by mid afternoon. Mostly cloudy. Highs around 34. Chance of precipitation 40 percent. .SATURDAY NIGHT...A chance of snow showers through midnight. Mostly cloudy. Lows around 24. Chance of snow 30 percent. .SUNDAY...Partly sunny. Highs around 34. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows around 29. Highs around 40. .MONDAY NIGHT...Mostly cloudy. Lows around 35. .TUESDAY...Partly cloudy. Highs around 43. && Isle Royale (NW areas)- Including Amygdaloid Island, Lookout Louise, and Minong Mine- ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...FLOOD WATCH IN EFFECT THROUGH LATE THURSDAY NIGHT... .TODAY...Mostly cloudy. Patchy dense fog early, then patchy fog by late morning. Highs around 39. North winds up to 10 mph becoming southeast late. Waves calm to 1 foot. .TONIGHT...Mostly cloudy. Patchy fog. Lows around 33. East winds up to 5 mph becoming southeast by midnight. Waves calm to 1 foot. .THURSDAY...Partly sunny. Areas of dense fog through early afternoon. Highs 37 to 42. North winds up to 5 mph becoming south by late morning, then becoming southeast late. Waves calm to 1 foot. .THURSDAY NIGHT...Mostly cloudy. Lows around 33. East winds 5 to 15 mph. Waves building to 1 to 2 feet. .FRIDAY...A 30 percent chance of rain showers by mid afternoon. Mostly cloudy. Highs around 42. East winds 5 to 15 mph. Waves building to 2 to 4 feet. .FRIDAY NIGHT...Rain showers and a chance of thunderstorms through midnight, then a chance of rain and snow showers late. Mostly cloudy. Lows around 29. Chance of precipitation 80 percent. .SATURDAY...Breezy. A chance of rain and snow showers through early afternoon, then a chance of snow showers by mid afternoon. Mostly cloudy. Highs around 34. Chance of precipitation 40 percent. .SATURDAY NIGHT...Breezy. A chance of snow showers through midnight. Mostly cloudy. Lows around 23. Chance of snow 30 percent. .SUNDAY...Partly sunny. Highs around 34. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows around 28. Highs around 40. .MONDAY NIGHT...Mostly cloudy. Lows around 35. .TUESDAY...Partly cloudy. Highs around 43. && Isle Royale (SE areas)- Including Feldtman Ridge, Rainbow Cove, and Siskiwit Bay- ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...FLOOD WATCH IN EFFECT THROUGH LATE THURSDAY NIGHT... .TODAY...Mostly cloudy. Patchy dense fog early. Highs 39 to 44. North winds up to 5 mph becoming east by mid afternoon. Waves calm to 1 foot. .TONIGHT...Mostly cloudy. Patchy fog. Lows around 35. East winds up to 5 mph. Waves calm to 1 foot. .THURSDAY...Partly sunny. Areas of dense fog through early afternoon. Highs 39 to 44. Northeast winds up to 5 mph becoming southeast by late morning, then becoming 5 to 10 mph late. Waves calm to 1 foot. .THURSDAY NIGHT...Mostly cloudy. Lows around 35. East winds up to 10 mph. Waves building to 1 to 2 feet. .FRIDAY...A 30 percent chance of rain showers by mid afternoon. Mostly cloudy. Highs around 44. East winds 5 to 15 mph. Waves building to 2 to 3 feet. .FRIDAY NIGHT...Rain showers and a chance of thunderstorms through midnight, then a chance of rain showers late. Mostly cloudy. Lows around 30. Chance of precipitation 80 percent. .SATURDAY...Cooler. A chance of rain and snow showers through early afternoon, then a chance of snow showers by mid afternoon. Mostly cloudy. Highs around 35. Chance of precipitation 40 percent. .SATURDAY NIGHT...A chance of snow showers through midnight. Mostly cloudy. Lows around 24. Chance of snow 30 percent. .SUNDAY...Partly sunny. Highs around 35. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows around 29. Highs around 41. .MONDAY NIGHT...Mostly cloudy. Lows around 36. .TUESDAY...Partly cloudy. Highs around 45. && $$