SXUS43 KMQT 192104 RECMQT MIZ001-200800- Recreational Forecast for Isle Royale National Park National Weather Service Marquette MI 504 PM EDT Tue May 19 2026 Isle Royale (SW areas)- Including Greenstone Ridge South, Little Todd Harbor, Minong Ridge, and Windigo- .TONIGHT...Mostly cloudy early in the evening then becoming partly cloudy. Areas of frost late. Lows around 35. Northwest winds 5 to 15 mph. Waves 1 to 2 feet subsiding to calm to 1 foot. .WEDNESDAY...Sunny. Highs around 44 at the shore and 48 to 53 inland. Northwest winds 5 to 10 mph becoming southwest 5 to 15 mph by mid afternoon. Waves calm to 1 foot. .WEDNESDAY NIGHT...Mostly clear. Lows around 38. South winds 5 to 15 mph. Waves calm to 1 foot. .THURSDAY...Warmer, sunny. Highs around 49 at the shore and 55 to 60 inland. South winds 5 to 10 mph becoming southeast late. Waves calm to 1 foot. .THURSDAY NIGHT...Partly cloudy. Lows around 40. Southeast winds up to 10 mph. Waves calm to 1 foot. .FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Highs around 49 at the shore and 54 to 59 inland. Lows around 40. .SATURDAY...Cloudy with a 50 percent chance of rain showers. Highs around 48 at the shore and 53 to 58 inland. .SATURDAY NIGHT...A chance of rain showers through midnight. Mostly cloudy. Lows around 40. Chance of showers 30 percent. .SUNDAY...Partly sunny. Highs around 50 at the shore and 56 to 61 inland. .SUNDAY NIGHT...Partly cloudy through midnight then becoming mostly cloudy. Lows around 41. .MEMORIAL DAY THROUGH TUESDAY...Mostly cloudy. Highs around 54 at the shore and 62 to 67 inland. Lows around 43. && Isle Royale (NE areas)- Including Greenstone Ridge North, Malone Bay, Mount Saginaw, and Rock Harbor- .TONIGHT...Mostly cloudy early in the evening then becoming partly cloudy. Areas of frost late. Lows around 35. Northwest winds 5 to 15 mph. Waves 2 to 3 feet subsiding to calm to 1 foot. .WEDNESDAY...Cool, sunny. Areas of frost through early afternoon. Highs around 42 at the shore and 44 to 49 inland. Northwest winds 5 to 10 mph becoming southwest 5 to 15 mph by mid afternoon. Waves building to 1 to 2 feet. .WEDNESDAY NIGHT...Mostly clear. Lows around 38. Southwest winds 5 to 10 mph. Waves subsiding to calm to 1 foot. .THURSDAY...Sunny. Highs around 43 at the shore and 49 to 54 inland. South winds 5 to 15 mph becoming southeast by mid afternoon. Waves building to 1 to 2 feet. .THURSDAY NIGHT...Partly cloudy. Lows around 39. Southeast winds up to 10 mph. Waves 1 to 2 feet. .FRIDAY...Partly cloudy. Highs around 45 at the shore and 48 to 53 inland. .FRIDAY NIGHT...Mostly cloudy. Lows around 39. .SATURDAY...Mostly cloudy with a 50 percent chance of rain showers. Highs around 45 at the shore and 48 to 53 inland. .SATURDAY NIGHT...A chance of rain showers through midnight. Mostly cloudy. Lows around 39. Chance of showers 40 percent. .SUNDAY AND SUNDAY NIGHT...Mostly cloudy. Highs around 45 at the shore and 51 to 56 inland. Lows around 40. .MEMORIAL DAY THROUGH TUESDAY...Mostly cloudy. Highs around 48 at the shore and 57 to 62 inland. Lows around 41. && Isle Royale (NW areas)- Including Amygdaloid Island, Lookout Louise, and Minong Mine- .TONIGHT...Mostly cloudy early in the evening then becoming partly cloudy. Areas of frost late. Lows around 35. Northwest winds 10 to 15 mph. Waves 2 to 3 feet subsiding to calm to 1 foot. .WEDNESDAY...Sunny. Patchy frost through early afternoon. Highs around 44 at the shore and 47 to 52 inland. Northwest winds 10 to 15 mph becoming southwest 5 to 15 mph by mid afternoon. Waves building to 1 to 2 feet. .WEDNESDAY NIGHT...Mostly clear. Lows around 38. Southwest winds 5 to 10 mph. Waves subsiding to calm to 1 foot. .THURSDAY...Sunny. Highs around 46 at the shore and 52 to 57 inland. South winds 5 to 10 mph becoming southeast 5 to 15 mph by mid afternoon. Waves building to 1 to 2 feet. .THURSDAY NIGHT...Partly cloudy. Lows around 39. Southeast winds up to 10 mph. Waves subsiding to calm to 1 foot. .FRIDAY...Partly cloudy. Highs around 45 at the shore and 51 to 56 inland. .FRIDAY NIGHT...Mostly cloudy. Lows around 39. .SATURDAY...Mostly cloudy with a 50 percent chance of rain showers. Highs around 46 at the shore and 51 to 56 inland. .SATURDAY NIGHT...A chance of rain showers through midnight. Mostly cloudy. Lows around 39. Chance of showers 40 percent. .SUNDAY AND SUNDAY NIGHT...Mostly cloudy. Highs around 48 at the shore and 53 to 58 inland. Lows around 41. .MEMORIAL DAY THROUGH TUESDAY...Mostly cloudy. Highs around 51 at the shore and 58 to 63 inland. Lows around 42. && Isle Royale (SE areas)- Including Feldtman Ridge, Rainbow Cove, and Siskiwit Bay- .TONIGHT...Mostly cloudy early in the evening then becoming partly cloudy. Areas of frost late. Lows around 36. Northwest winds 5 to 15 mph. Waves 1 to 2 feet subsiding to calm to 1 foot. .WEDNESDAY...Sunny. Highs around 44 at the shore and 47 to 52 inland. Northwest winds 5 to 10 mph becoming southwest 5 to 15 mph by mid afternoon. Waves calm to 1 foot. .WEDNESDAY NIGHT...Mostly clear. Lows around 38. Southwest winds up to 10 mph becoming south late. Waves calm to 1 foot. .THURSDAY...Warmer, sunny. Highs around 48 at the shore and 54 to 59 inland. South winds 5 to 10 mph becoming southeast 5 to 15 mph late. Waves calm to 1 foot. .THURSDAY NIGHT...Partly cloudy. Lows around 40. Southeast winds up to 10 mph. Waves building to 1 to 2 feet subsiding to calm to 1 foot. .FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Highs around 48 at the shore and 54 to 59 inland. Lows around 40. .SATURDAY...Mostly cloudy with a 50 percent chance of rain showers. Highs around 48 at the shore and 51 to 56 inland. .SATURDAY NIGHT...A chance of rain showers through midnight. Mostly cloudy. Lows around 40. Chance of showers 30 percent. .SUNDAY AND SUNDAY NIGHT...Mostly cloudy. Highs around 48 at the shore and 55 to 60 inland. Lows around 41. .MEMORIAL DAY AND MONDAY NIGHT...Mostly cloudy. Highs around 52 at the shore and 59 to 64 inland. Lows around 42. .TUESDAY...Partly cloudy. Highs around 53 at the shore and 60 to 65 inland. && $$