SXUS43 KMQT 230901 RECMQT MIZ001-232000- Recreational Forecast for Isle Royale National Park National Weather Service Marquette MI 500 AM EDT Sun Aug 23 2026 Isle Royale (SW areas)- Including Greenstone Ridge South, Little Todd Harbor, Minong Ridge, and Windigo- .TODAY...Sunny. Highs around 64 at the shore and 68 to 73 inland. North winds 10 to 20 mph decreasing to 5 to 10 mph by early afternoon, then becoming northwest 5 to 15 mph late. Waves 2 to 3 feet subsiding to calm to 1 foot building to 1 to 2 feet. .TONIGHT...Mostly clear. Lows around 54. West winds 5 to 15 mph becoming north late. Waves subsiding to calm to 1 foot. .MONDAY...Mostly sunny. Highs around 65 at the shore and 69 to 74 inland. North winds 5 to 15 mph becoming southwest late. Waves calm to 1 foot. .MONDAY NIGHT...Mostly cloudy. Lows around 56. Southwest winds up to 10 mph. Waves calm to 1 foot. .TUESDAY...A slight chance of rain showers through early afternoon, then rain showers likely by mid afternoon. Partly sunny. Highs around 66 at the shore and 70 to 75 inland. South winds 5 to 10 mph becoming southeast by mid afternoon. Chance of showers 60 percent. Waves calm to 1 foot. .TUESDAY NIGHT...Rain showers and a chance of thunderstorms through midnight, then rain showers likely late. Lows around 59. Chance of precipitation 90 percent. .WEDNESDAY...Rain showers likely through early afternoon, then a chance of rain showers by mid afternoon. Partly sunny. Highs around 66 at the shore and 70 to 75 inland. Chance of showers 60 percent. .WEDNESDAY NIGHT...Mostly cloudy through midnight then becoming partly cloudy. Lows 59 to 64. .THURSDAY THROUGH SATURDAY...Partly cloudy. Highs around 67 at the shore and 75 to 80 inland. Lows 57 to 62. && Isle Royale (NE areas)- Including Greenstone Ridge North, Malone Bay, Mount Saginaw, and Rock Harbor- .TODAY...Sunny early then becoming mostly sunny. Highs around 61 at the shore and 65 to 70 inland. North winds 5 to 15 mph. Waves 1 to 2 feet subsiding to calm to 1 foot. .TONIGHT...Mostly clear. Lows around 54. Northwest winds 5 to 10 mph becoming north 5 to 15 mph late. Waves calm to 1 foot. .MONDAY...Sunny. Highs around 63 at the shore and 66 to 71 inland. North winds 5 to 15 mph becoming southwest 5 to 10 mph late. Waves calm to 1 foot. .MONDAY NIGHT...Mostly cloudy. Lows around 56. Southwest winds up to 10 mph. Waves calm to 1 foot. .TUESDAY...A 40 percent chance of rain showers by mid afternoon. Partly sunny. Highs around 63 at the shore and 66 to 71 inland. South winds 5 to 10 mph becoming southeast by mid afternoon. Waves calm to 1 foot. .TUESDAY NIGHT...Rain showers and a chance of thunderstorms. Lows around 57. Chance of precipitation 80 percent. .WEDNESDAY...A chance of rain showers through early afternoon. Mostly cloudy. Highs around 63 at the shore and 67 to 72 inland. Chance of showers 50 percent. .WEDNESDAY NIGHT...Mostly cloudy. Lows 56 to 61. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs around 62 at the shore and 71 to 76 inland. Lows 56 to 61 inland and around 54 at the shore. .FRIDAY THROUGH SATURDAY...Partly cloudy. Highs around 61 at the shore and 69 to 74 inland. Lows 55 to 60. && Isle Royale (NW areas)- Including Amygdaloid Island, Lookout Louise, and Minong Mine- .TODAY...Sunny early then becoming mostly sunny. Highs around 64 at the shore and 68 to 73 inland. North winds 5 to 15 mph. Waves 1 to 2 feet building to 2 to 3 feet subsiding to calm to 1 foot. .TONIGHT...Mostly clear. Lows around 55. West winds 5 to 10 mph becoming north 5 to 15 mph late. Waves calm to 1 foot. .MONDAY...Sunny. Highs around 65 at the shore and 69 to 74 inland. North winds 5 to 15 mph becoming southwest 5 to 10 mph late. Waves calm to 1 foot. .MONDAY NIGHT...Mostly cloudy. Lows around 56. Southwest winds 5 to 10 mph. Waves calm to 1 foot. .TUESDAY...A 40 percent chance of rain showers by mid afternoon. Partly sunny. Highs around 65 at the shore and 69 to 74 inland. South winds 5 to 10 mph becoming southeast by mid afternoon. Waves calm to 1 foot. .TUESDAY NIGHT...Rain showers and a chance of thunderstorms through midnight, then rain showers late. Lows around 58. Chance of precipitation 80 percent. .WEDNESDAY...Rain showers likely through early afternoon, then a chance of rain showers by mid afternoon. Partly sunny. Highs around 66 at the shore and 70 to 75 inland. Chance of showers 60 percent. .WEDNESDAY NIGHT...Mostly cloudy. Lows 58 to 63. .THURSDAY THROUGH SATURDAY...Partly cloudy. Highs around 66 at the shore and 74 to 79 inland. Lows 57 to 62. && Isle Royale (SE areas)- Including Feldtman Ridge, Rainbow Cove, and Siskiwit Bay- .TODAY...Sunny. Highs around 61 at the shore and 66 to 71 inland. North winds 5 to 15 mph becoming northwest late. Waves calm to 1 foot. .TONIGHT...Mostly clear. Lows around 54. West winds 5 to 15 mph becoming north 5 to 10 mph late. Waves building to 1 to 2 feet subsiding to calm to 1 foot. .MONDAY...Mostly sunny. Highs around 63 at the shore and 67 to 72 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 around 56. Southwest winds up to 10 mph. Waves calm to 1 foot. .TUESDAY...A 50 percent chance of rain showers by mid afternoon. Partly sunny. Highs around 64 at the shore and 68 to 73 inland. South winds up to 10 mph becoming southeast by mid afternoon. Waves calm to 1 foot. .TUESDAY NIGHT...Rain showers and a chance of thunderstorms through midnight, then rain showers likely and a chance of thunderstorms late. Lows 55 to 60. Chance of precipitation 90 percent. .WEDNESDAY...A chance of rain showers through early afternoon. Mostly cloudy. Highs around 64 at the shore and 68 to 73 inland. Chance of showers 50 percent. .WEDNESDAY NIGHT...Mostly cloudy. Lows 57 to 62. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs around 66 at the shore and 74 to 79 inland. Lows 54 to 59. .FRIDAY THROUGH SATURDAY...Partly cloudy. Highs around 63 at the shore and 71 to 76 inland. Lows 57 to 62 inland and around 55 at the shore. && $$