SXUS43 KMQT 150901 RECMQT MIZ001-152000- Recreational Forecast for Isle Royale National Park National Weather Service Marquette MI 501 AM EDT Thu Oct 15 2026 Isle Royale (SW areas)- Including Greenstone Ridge South, Little Todd Harbor, Minong Ridge, and Windigo- .TODAY...A chance of rain showers by late morning. Rain showers by mid afternoon. Highs around 52. South winds 5 to 15 mph. Waves calm to 1 foot building to 1 to 2 feet, then subsiding to calm to 1 foot. .TONIGHT...Windy. Rain showers through midnight, then a chance of rain showers late. Lows around 42. Southwest winds 5 to 10 mph becoming north 5 to 15 mph by midnight, then increasing to 20 to 30 mph late. Chance of showers near 100 percent. Waves building to 4 to 7 feet. .FRIDAY...Windy. Mostly cloudy through early afternoon then clearing. Highs around 47. North winds 15 to 25 mph. Waves building to 6 to 9 feet subsiding to 3 to 6 feet. .FRIDAY NIGHT...Mostly clear. Lows around 40. Northwest winds 10 to 20 mph becoming west 5 to 15 mph late. Waves subsiding to calm to 1 foot building to 3 to 5 feet. .SATURDAY...Windy, sunny. Highs around 52. Southwest winds 15 to 25 mph increasing to 20 to 30 mph by mid afternoon. Waves building to 8 to 11 feet. .SATURDAY NIGHT...Windy. Mostly clear. Lows 44 to 49. .SUNDAY AND SUNDAY NIGHT...Windy. Partly cloudy. Highs around 56. Lows 43 to 48. .MONDAY AND MONDAY NIGHT...Mostly clear. Highs around 55. Lows 42 to 47. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs around 54. Lows around 47. .WEDNESDAY...Partly sunny. Highs around 57. && Isle Royale (NE areas)- Including Greenstone Ridge North, Malone Bay, Mount Saginaw, and Rock Harbor- .TODAY...A chance of rain showers by late morning. Rain showers by mid afternoon. Highs around 51. South winds 5 to 15 mph. Waves calm to 1 foot building to 1 to 2 feet. .TONIGHT...Breezy. Rain showers likely. Lows around 43. South winds 5 to 10 mph becoming northwest 5 to 15 mph by midnight, then becoming north 10 to 20 mph late. Chance of showers 70 percent. Waves subsiding to calm to 1 foot building to 3 to 6 feet. .FRIDAY...Windy. Mostly cloudy through early afternoon then clearing. Highs 44 to 49. North winds 15 to 25 mph. Waves building to 5 to 8 feet subsiding to 3 to 5 feet. .FRIDAY NIGHT...Partly cloudy. Lows around 40. Northwest winds 10 to 20 mph becoming west 5 to 15 mph late. Waves subsiding to calm to 1 foot building to 2 to 3 feet. .SATURDAY...Windy, sunny. Highs around 52. Southwest winds 15 to 25 mph. Waves building to 5 to 8 feet. .SATURDAY NIGHT...Breezy. Mostly clear. Lows around 47. .SUNDAY AND SUNDAY NIGHT...Breezy. Partly cloudy. Highs around 55. Lows around 46. .MONDAY AND MONDAY NIGHT...Mostly clear. Highs around 54. Lows 44 to 49. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs around 53. Lows around 48. .WEDNESDAY...Partly sunny. Highs 53 to 58. && Isle Royale (NW areas)- Including Amygdaloid Island, Lookout Louise, and Minong Mine- .TODAY...A chance of rain showers by late morning. Rain showers by mid afternoon. Highs around 51. South winds 5 to 15 mph. Waves calm to 1 foot. .TONIGHT...Windy. Rain showers likely. Lows around 42. South winds 5 to 10 mph becoming northwest 5 to 15 mph by midnight, then becoming north 10 to 20 mph late increasing to 20 to 30 mph late. Chance of showers 70 percent. Waves building to 4 to 7 feet. .FRIDAY...Windy. Mostly cloudy through early afternoon then clearing. Highs 44 to 49. North winds 20 to 30 mph decreasing to 15 to 25 mph late. Waves building to 5 to 8 feet subsiding to 3 to 5 feet. .FRIDAY NIGHT...Partly cloudy. Lows around 40. Northwest winds 10 to 20 mph becoming west 5 to 15 mph late. Waves subsiding to 1 to 2 feet, then building to 2 to 3 feet. .SATURDAY...Windy, sunny. Highs around 52. Southwest winds 15 to 25 mph. Wavesbuilding to 6 to 9 feet. .SATURDAY NIGHT...Breezy. Mostly clear. Lows 44 to 49. .SUNDAY AND SUNDAY NIGHT...Windy. Partly cloudy. Highs around 56. Lows around 46. .MONDAY AND MONDAY NIGHT...Mostly clear. Highs around 55. Lows around 45. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs around 54. Lows around 47. .WEDNESDAY...Partly sunny. Highs around 56. && Isle Royale (SE areas)- Including Feldtman Ridge, Rainbow Cove, and Siskiwit Bay- .TODAY...A chance of rain showers by late morning. Rain showers by mid afternoon. Highs 49 to 54. South winds 5 to 15 mph. Waves calm to 1 foot building to 1 to 2 feet subsiding to calm to 1 foot. .TONIGHT...Windy. Rain showers through midnight, then rain showers likely late. Lows around 42. South winds 5 to 10 mph becoming north 5 to 15 mph by midnight, then increasing to 20 to 30 mph late. Chance of showers near 100 percent. Waves building to 2 to 4 feet. .FRIDAY...Windy. Mostly cloudy with a 20 percent chance of rain showers through early afternoon, then sunny by mid afternoon. Highs 44 to 49. North winds 20 to 30 mph decreasing to 15 to 20 mph late. Waves building to 3 to 5 feet subsiding to 1 to 2 feet. .FRIDAY NIGHT...Partly cloudy. Lows around 40. Northwest winds 10 to 15 mph becoming west 5 to 15 mph late. Waves subsiding to calm to 1 foot building to 3 to 5 feet. .SATURDAY...Windy, sunny. Highs around 52. Southwest winds 15 to 25 mph increasing to 20 to 30 mph by mid afternoon. Waves building to 7 to 10 feet. .SATURDAY NIGHT...Windy. Mostly clear. Lows around 46. .SUNDAY AND SUNDAY NIGHT...Windy. Partly cloudy. Highs 53 to 58. Lows around 45. .MONDAY AND MONDAY NIGHT...Mostly clear. Highs 52 to 57. Lows 42 to 47. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs 51 to 56. Lows around 47. .WEDNESDAY...Partly sunny. Highs 54 to 59. && $$