SXUS43 KMQT 232103 RECMQT MIZ001-240800- Recreational Forecast for Isle Royale National Park National Weather Service Marquette MI 502 PM EDT Sun Aug 23 2026 Isle Royale (SW areas)- Including Greenstone Ridge South, Little Todd Harbor, Minong Ridge, and Windigo- .TONIGHT...Mostly clear. Lows around 53. West winds 5 to 15 mph becoming northwest 5 to 10 mph late. Waves calm to 1 foot. .MONDAY...Sunny. Highs around 64 at the shore and 70 to 75 inland. North winds 5 to 10 mph becoming west by early afternoon, then becoming southwest late. Waves calm to 1 foot. .MONDAY NIGHT...Mostly cloudy. Lows 58 to 63. Southwest winds up to 10 mph becoming south late. Waves calm to 1 foot. .TUESDAY...Warmer. Rain showers likely and a slight chance of thunderstorms by mid afternoon. Partly sunny. Highs around 65 at the shore and 75 to 80 inland. South winds 5 to 10 mph becoming southeast late. Chance of precipitation 60 percent. Waves calm to 1 foot. .TUESDAY NIGHT...Rain showers and a chance of thunderstorms through midnight, then rain showers and a slight chance of thunderstorms late. Lows 60 to 65 inland and around 57 at the shore. Southeast winds 5 to 10 mph becoming south late. Chance of precipitation 90 percent. Waves calm to 1 foot. .WEDNESDAY...A chance of rain showers through early afternoon, then rain showers likely by mid afternoon. Mostly cloudy. Highs around 66 at the shore and 76 to 81 inland. Chance of showers 70 percent. .WEDNESDAY NIGHT...Mostly cloudy through midnight then becoming partly cloudy. Lows 59 to 64. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs 69 to 74. Lows 56 to 61. .FRIDAY THROUGH SATURDAY...Partly cloudy. Highs 68 to 73. Lows 56 to 61. .SATURDAY NIGHT...Partly cloudy through midnight then becoming mostly cloudy. Lows 58 to 63. .SUNDAY...Partly cloudy. Highs 69 to 74. && Isle Royale (NE areas)- Including Greenstone Ridge North, Malone Bay, Mount Saginaw, and Rock Harbor- .TONIGHT...Mostly clear. Lows around 53. Northwest winds 5 to 15 mph becoming north late. Waves calm to 1 foot. .MONDAY...Sunny. Highs around 61 at the shore and 67 to 72 inland. North winds 5 to 15 mph becoming southwest 5 to 10 mph late. Waves calm to 1 foot. .MONDAY NIGHT...Mostly cloudy. Lows 56 to 61. Southwest winds up to 10 mph becoming up to 5 mph late. Waves calm to 1 foot. .TUESDAY...A chance of rain showers and a slight chance of thunderstorms by mid afternoon. Partly sunny. Highs around 61 at the shore and 72 to 77 inland. South winds 5 to 10 mph becoming southeast by mid afternoon. Chance of precipitation 50 percent. Waves calm to 1 foot. .TUESDAY NIGHT...Rain showers and a chance of thunderstorms through midnight, then rain showers and a slight chance of thunderstorms late. Lows 57 to 62. Southeast winds 5 to 15 mph becoming south 5 to 10 mph late. Chance of precipitation 90 percent. Waves building to 1 to 2 feet. .WEDNESDAY...Mostly cloudy with a chance of rain showers. Highs around 62 at the shore and 74 to 79 inland. Chance of showers 50 percent. .WEDNESDAY NIGHT...Mostly cloudy. Lows 57 to 62. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs around 61 at the shore and 68 to 73 inland. Lows 56 to 61 inland and around 54 at the shore. .FRIDAY THROUGH SATURDAY...Partly cloudy. Highs around 60 at the shore and 67 to 72 inland. Lows 54 to 59. .SATURDAY NIGHT...Partly cloudy through midnight then becoming mostly cloudy. Lows 58 to 63 inland and around 56 at the shore. .SUNDAY...Partly cloudy. Highs around 62 at the shore and 68 to 73 inland. && Isle Royale (NW areas)- Including Amygdaloid Island, Lookout Louise, and Minong Mine- .TONIGHT...Mostly clear. Lows around 54. West winds 5 to 15 mph becoming northwest 5 to 10 mph late. Waves calm to 1 foot. .MONDAY...Sunny. Highs around 64 at the shore and 69 to 74 inland. Northwest winds 5 to 15 mph becoming west 5 to 10 mph by mid afternoon. Waves calm to 1 foot. .MONDAY NIGHT...Mostly cloudy. Lows 58 to 63. Southwest winds 5 to 10 mph. Waves calm to 1 foot. .TUESDAY...A chance of rain showers and a slight chance of thunderstorms by mid afternoon. Partly sunny. Highs around 64 at the shore and 75 to 80 inland. South winds 5 to 10 mph becoming southeast late. Chance of precipitation 50 percent. Waves calm to 1 foot. .TUESDAY NIGHT...Rain showers and a chance of thunderstorms through midnight, then rain showers and a slight chance of thunderstorms late. Lows 59 to 64. Southeast winds 5 to 15 mph becoming south 5 to 10 mph late. Chance of precipitation 90 percent. Waves building to 1 to 2 feet. .WEDNESDAY...Partly sunny with a chance of rain showers. Highs around 65 at the shore and 77 to 82 inland. Chance of showers 50 percent. .WEDNESDAY NIGHT...Mostly cloudy. Lows 59 to 64. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs around 65 at the shore and around 72 inland. Lows 56 to 61. .FRIDAY THROUGH SUNDAY...Partly cloudy. Highs around 63 at the shore and 71 to 76 inland. Lows 58 to 63. && Isle Royale (SE areas)- Including Feldtman Ridge, Rainbow Cove, and Siskiwit Bay- .TONIGHT...Mostly clear. Lows around 53. West winds 5 to 10 mph becoming northwest late. Waves calm to 1 foot. .MONDAY...Sunny. Highs around 63 at the shore and 68 to 73 inland. North winds 5 to 10 mph becoming southwest by mid afternoon. Waves calm to 1 foot. .MONDAY NIGHT...Mostly cloudy. Lows 56 to 61. Southwest winds up to 10 mph becoming south late. Waves calm to 1 foot. .TUESDAY...Rain showers likely and a slight chance of thunderstorms by mid afternoon. Partly sunny. Highs around 64 at the shore and 76 to 81 inland. South winds 5 to 10 mph becoming southeast late. Chance of precipitation 60 percent. Waves calm to 1 foot. .TUESDAY NIGHT...Rain showers and a chance of thunderstorms through midnight, then rain showers and a slight chance of thunderstorms late. Lows 57 to 62. Southeast winds 5 to 10 mph becoming south late. Chance of precipitation 90 percent. Waves calm to 1 foot. .WEDNESDAY...Mostly cloudy with a chance of rain showers. Highs around 65 at the shore and 76 to 81 inland. Chance of showers 50 percent. .WEDNESDAY NIGHT...Mostly cloudy through midnight then becoming partly cloudy. Lows 59 to 64 inland and around 57 at the shore. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs around 64 at the shore and 69 to 74 inland. Lows 54 to 59. .FRIDAY THROUGH SATURDAY...Partly cloudy. Highs around 62 at the shore and 68 to 73 inland. Lows 55 to 60. .SATURDAY NIGHT...A chance of rain showers late. Mostly cloudy. Lows 56 to 61. Chance of showers 30 percent. .SUNDAY...Partly cloudy. Highs around 64 at the shore and 70 to 75 inland. && $$