SXUS43 KMQT 202102 RECMQT MIZ001-210800- Recreational Forecast for Isle Royale National Park National Weather Service Marquette MI 502 PM EDT Sun Sep 20 2026 Isle Royale (SW areas)- Including Greenstone Ridge South, Little Todd Harbor, Minong Ridge, and Windigo- .TONIGHT...Partly cloudy early in the evening then becoming mostly cloudy. Lows 47 to 52. Northeast winds 5 to 10 mph becoming east late. Waves calm to 1 foot. .MONDAY...Mostly cloudy through early afternoon then becoming partly cloudy. Highs around 57. East winds 5 to 10 mph. Waves calm to 1 foot. .MONDAY NIGHT...Mostly clear. Lows 45 to 50. East winds up to 10 mph. Waves calm to 1 foot. .TUESDAY...Sunny. Highs around 58. East winds up to 10 mph. Waves calm to 1 foot. .TUESDAY NIGHT...Mostly clear. Lows 47 to 52. Southeast winds 5 to 10 mph becoming up to 10 mph late. Waves calm to 1 foot. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs around 58. Lows around 50. .THURSDAY THROUGH SATURDAY NIGHT...Mostly cloudy. Highs around 58 at the shore and 61 to 66 inland. Lows around 53. .SUNDAY...A chance of rain showers through early afternoon. Mostly cloudy. Highs 61 to 66. Chance of showers 30 percent. && Isle Royale (NE areas)- Including Greenstone Ridge North, Malone Bay, Mount Saginaw, and Rock Harbor- .TONIGHT...Partly cloudy early in the evening then becoming mostly cloudy. Lows around 50. Northeast winds 5 to 15 mph becoming east late. Waves calm to 1 foot building to 1 to 2 feet. .MONDAY...Partly sunny. Highs 52 to 57. East winds 5 to 10 mph. Waves subsiding to calm to 1 foot. .MONDAY NIGHT...Mostly clear. Lows 46 to 51. East winds up to 10 mph. Waves calm to 1 foot. .TUESDAY...Sunny. Highs around 55. East winds up to 10 mph. Waves calm to 1 foot. .TUESDAY NIGHT...Mostly clear. Lows around 51. Southeast winds 5 to 10 mph becoming up to 10 mph late. Waves calm to 1 foot. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs around 57. Lows around 51. .THURSDAY...Partly cloudy. Highs 56 to 61. .THURSDAY NIGHT AND FRIDAY...Mostly cloudy. Lows around 53. Highs 58 to 63. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows around 54. Highs 59 to 64. .SATURDAY NIGHT...Mostly cloudy. Lows around 54. .SUNDAY...A chance of rain showers through early afternoon. Mostly cloudy. Highs around 59 at the shore and 61 to 66 inland. Chance of showers 30 percent. && Isle Royale (NW areas)- Including Amygdaloid Island, Lookout Louise, and Minong Mine- .TONIGHT...Partly cloudy early in the evening then becoming mostly cloudy. Lows 48 to 53. Northeast winds 5 to 15 mph becoming east late. Waves calm to 1 foot. .MONDAY...Partly sunny through early afternoon then becoming mostly sunny. Highs around 56. East winds 5 to 10 mph. Waves calm to 1 foot. .MONDAY NIGHT...Mostly clear. Lows 47 to 52. East winds up to 10 mph. Waves calm to 1 foot. .TUESDAY...Sunny. Highs around 57. East winds up to 10 mph. Waves calm to 1 foot. .TUESDAY NIGHT...Mostly clear. Lows around 52. Southeast winds 5 to 10 mph. Waves calm to 1 foot. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs around 58. Lows around 52. .THURSDAY...Partly cloudy. Highs around 59. .THURSDAY NIGHT AND FRIDAY...Mostly cloudy. Lows around 53. Highs 59 to 64. .FRIDAY NIGHT...Partly cloudy through midnight then becoming mostly cloudy. Lows around 55. .SATURDAY AND SATURDAY NIGHT...Mostly cloudy. Highs 60 to 65. Lows around 55. .SUNDAY...Mostly cloudy with a 30 percent chance of rain showers. Highs 61 to 66. && Isle Royale (SE areas)- Including Feldtman Ridge, Rainbow Cove, and Siskiwit Bay- .TONIGHT...Partly cloudy early in the evening then becoming mostly cloudy. Lows around 49. Northeast winds 5 to 10 mph becoming east late. Waves calm to 1 foot building to 1 to 2 feet. .MONDAY...Mostly cloudy through early afternoon then becoming partly cloudy. Highs 53 to 58. East winds 5 to 10 mph. Waves 1 to 2 feet. .MONDAY NIGHT...Mostly clear. Lows around 47. East winds up to 10 mph. Waves subsiding to calm to 1 foot. .TUESDAY...Sunny. Highs 54 to 59. East winds up to 10 mph. Waves calm to 1 foot. .TUESDAY NIGHT...Mostly clear. Lows around 49. Southeast winds 5 to 10 mph becoming up to 10 mph late. Waves calm to 1 foot. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 55 to 60. Lows around 49. .THURSDAY...Partly cloudy. Highs around 56 at the shore and 58 to 63 inland. .THURSDAY NIGHT THROUGH SATURDAY NIGHT...Mostly cloudy. Lows around 53. Highs around 59 at the shore and 61 to 66 inland. .SUNDAY...A chance of rain showers through early afternoon. Mostly cloudy. Highs around 59 at the shore and 61 to 66 inland. Chance of showers 30 percent. && $$