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SXUS43 KMQT 302102
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MIZ001-010800-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 PM EDT Wed Sep 30 2026

Isle Royale (SW areas)-
Including Greenstone Ridge South, Little Todd Harbor, Minong Ridge,
and Windigo-

.TONIGHT...Mostly cloudy. Patchy fog through midnight. Lows around
53. Southwest winds 5 to 10 mph becoming northwest 5 to 15 mph late.
Waves 1 to 2 feet subsiding to calm to 1 foot, then building to 1 to
2 feet.
.THURSDAY...Partly cloudy through early afternoon then clearing.
Highs around 61. Northwest winds 10 to 15 mph becoming west by late
morning. Waves subsiding to calm to 1 foot, then building to 1 to
2 feet.
.THURSDAY NIGHT...Partly cloudy. Lows 43 to 48. Northwest winds
10 to 20 mph. Waves building to 2 to 3 feet.
.FRIDAY...Sunny. Highs around 56. Northwest winds 5 to 15 mph. Waves
subsiding to 1 to 2 feet.
.FRIDAY NIGHT...Partly cloudy. Lows 44 to 49. West winds 5 to 10 mph
becoming southwest late. Waves subsiding to calm to 1 foot.
.SATURDAY...A chance of rain showers by mid afternoon. Mostly
cloudy. Highs 54 to 59. Chance of showers 50 percent.
.SATURDAY NIGHT...A 50 percent chance of rain showers through
midnight. Mostly cloudy. Lows around 47.
.SUNDAY...Partly cloudy through early afternoon then clearing. Highs
around 56.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Lows around 42. Highs 52 to
57.
.MONDAY NIGHT...Partly cloudy. Lows around 46.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs around 58. Lows
around 50.
.WEDNESDAY...Partly sunny through early afternoon then clearing.
Highs 58 to 63.

&&

Isle Royale (NE areas)-
Including Greenstone Ridge North, Malone Bay, Mount Saginaw,
and Rock Harbor-

.TONIGHT...Mostly cloudy. Patchy fog through midnight. Lows around
53. Southwest winds 5 to 10 mph becoming northwest 5 to 15 mph late.
Waves 1 to 2 feet subsiding to calm to 1 foot.
.THURSDAY...Partly cloudy through early afternoon then clearing.
Highs 57 to 62. Northwest winds 10 to 15 mph becoming west by late
morning. Waves building to 1 to 2 feet.
.THURSDAY NIGHT...Partly cloudy. Lows around 46. Northwest winds
10 to 20 mph. Waves building to 2 to 3 feet.
.FRIDAY...Sunny. Highs 53 to 58. Northwest winds 5 to 15 mph. Waves
subsiding to 1 to 2 feet.
.FRIDAY NIGHT...Partly cloudy. Lows 46 to 51. West winds 5 to 10 mph
becoming southwest late. Waves subsiding to calm to 1 foot.
.SATURDAY...A chance of rain showers by mid afternoon. Mostly
cloudy. Highs 53 to 58. Chance of showers 50 percent.
.SATURDAY NIGHT...A chance of rain showers through midnight. Mostly
cloudy. Lows around 48. Chance of showers 50 percent.
.SUNDAY...Mostly sunny. Highs 52 to 57.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Lows around 42. Highs 50 to
55.
.MONDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 46.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs 55 to 60. Lows
around 51.
.WEDNESDAY...Partly cloudy. Highs 56 to 61.

&&

Isle Royale (NW areas)-
Including Amygdaloid Island, Lookout Louise, and Minong Mine-

.TONIGHT...Partly cloudy early in the evening then becoming mostly
cloudy. Patchy fog through midnight. Lows around 53. West winds 5 to
10 mph becoming northwest 5 to 15 mph late. Waves 1 to 2 feet
subsiding to calm to 1 foot building to 1 to 2 feet.
.THURSDAY...Partly sunny through early afternoon then clearing.
Highs around 61. Northwest winds 10 to 15 mph becoming west by late
morning. Waves 1 to 2 feet.
.THURSDAY NIGHT...Partly cloudy. Lows around 46. Northwest winds
10 to 20 mph. Waves building to 2 to 4 feet.
.FRIDAY...Sunny. Highs 54 to 59. Northwest winds 10 to 20 mph. Waves
subsiding to 1 to 2 feet.
.FRIDAY NIGHT...Partly cloudy. Lows 44 to 49. West winds 5 to 10 mph
becoming southwest late. Waves subsiding to calm to 1 foot.
.SATURDAY...A chance of rain showers by mid afternoon. Mostly
cloudy. Highs 54 to 59. Chance of showers 50 percent.
.SATURDAY NIGHT...A chance of rain showers through midnight. Mostly
cloudy. Lows around 47. Chance of showers 50 percent.
.SUNDAY...Mostly sunny. Highs 53 to 58.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Lows around 42. Highs
around 51 at the shore and 53 to 58 inland.
.MONDAY NIGHT...Partly cloudy. Lows around 46.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs 56 to 61. Lows
around 50.
.WEDNESDAY...Partly sunny through early afternoon then becoming
mostly sunny. Highs 57 to 62.

&&

Isle Royale (SE areas)-
Including Feldtman Ridge, Rainbow Cove, and Siskiwit Bay-

.TONIGHT...Mostly cloudy. Patchy fog through midnight. Lows around
53. West winds 5 to 10 mph becoming northwest late. Waves 1 to
2 feet subsiding to calm to 1 foot.
.THURSDAY...Partly sunny through early afternoon then clearing.
Highs 58 to 63. Northwest winds 10 to 15 mph becoming west by late
morning. Waves building to 1 to 2 feet.
.THURSDAY NIGHT...Partly cloudy. Lows around 45. Northwest winds
10 to 20 mph. Waves subsiding to calm to 1 foot, then building to
1 to 2 feet.
.FRIDAY...Sunny. Highs 53 to 58. Northwest winds 5 to 15 mph. Waves
subsiding to calm to 1 foot.
.FRIDAY NIGHT...Partly cloudy. Lows 44 to 49. West winds up to
10 mph becoming southwest late. Waves calm to 1 foot.
.SATURDAY...A chance of rain showers by mid afternoon. Mostly
cloudy. Highs 53 to 58. Chance of showers 50 percent.
.SATURDAY NIGHT...A 50 percent chance of rain showers through
midnight. Mostly cloudy. Lows around 47.
.SUNDAY...Partly cloudy through early afternoon then clearing. Highs
53 to 58.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Lows around 42. Highs
around 50 at the shore and 52 to 57 inland.
.MONDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 46.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs 55 to 60. Lows
around 50.
.WEDNESDAY...Partly sunny through early afternoon then becoming
mostly sunny. Highs around 56 at the shore and 58 to 63 inland.

&&


$$