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MIZ001-060800-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 PM EDT Sun Oct 5 2025

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

.TONIGHT...Windy. Partly cloudy. Lows around 49. Southwest winds
20 to 30 mph becoming west 15 to 25 mph by midnight, then becoming
northwest 10 to 20 mph late. Waves 5 to 8 feet building to 6 to
9 feet subsiding to 2 to 3 feet.
.MONDAY...Cooler. Sunny through early afternoon then becoming partly
cloudy. Highs 57 to 62. Northwest winds 5 to 15 mph becoming
southwest by mid afternoon. Waves subsiding to calm to 1 foot
building to 2 to 3 feet.
.MONDAY NIGHT...Mostly clear. Lows around 48. West winds 10 to
20 mph. Waves 2 to 3 feet.
.TUESDAY...Sunny. Highs 55 to 60. West winds 10 to 20 mph becoming
northwest 5 to 15 mph by late morning. Waves building to 2 to 4 feet
subsiding to 1 to 2 feet.
.TUESDAY NIGHT...Mostly clear. Lows around 43. North winds 5 to
15 mph. Waves subsiding to calm to 1 foot.
.WEDNESDAY...Sunny. Highs 54 to 59.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows around 48. Highs
around 57 at the shore and 61 to 66 inland.
.THURSDAY NIGHT...Mostly cloudy. Lows around 52.
.FRIDAY THROUGH SATURDAY...Mostly clear. Highs around 58 at the
shore and 61 to 66 inland. Lows around 51.
.SATURDAY NIGHT...Partly cloudy. Lows around 53.
.SUNDAY...A chance of rain showers by mid afternoon. Partly cloudy.
Highs 62 to 67. Chance of showers 30 percent.

&&

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

.TONIGHT...Breezy. Mostly cloudy early in the evening then becoming
partly cloudy. Lows around 49. Southwest winds 15 to 25 mph becoming
northwest 10 to 20 mph late. Waves 5 to 8 feet subsiding to 3 to
5 feet.
.MONDAY...Cooler. Mostly sunny. Highs 55 to 60. Northwest winds 5 to
15 mph becoming southwest by mid afternoon. Waves subsiding to calm
to 1 foot building to 1 to 2 feet.
.MONDAY NIGHT...Mostly clear. Lows around 47. Southwest winds 10 to
15 mph becoming west 10 to 20 mph by midnight. Waves building to
2 to 3 feet.
.TUESDAY...Sunny. Highs 52 to 57. West winds 15 to 20 mph becoming
northwest 5 to 15 mph by late morning. Waves subsiding to 1 to
2 feet.
.TUESDAY NIGHT...Mostly clear. Lows around 44. North winds 5 to
15 mph. Waves subsiding to calm to 1 foot.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 51 to 56. Lows
around 48.
.THURSDAY...Warmer, sunny. Highs 57 to 62.
.THURSDAY NIGHT...Mostly cloudy. Lows around 52.
.FRIDAY THROUGH SATURDAY...Mostly clear. Highs 57 to 62. Lows around
51.
.SATURDAY NIGHT...Partly cloudy. Lows around 53.
.SUNDAY...A chance of rain showers by mid afternoon. Partly cloudy.
Highs 59 to 64. Chance of showers 30 percent.

&&

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

.TONIGHT...Windy. Partly cloudy. Lows around 49. Southwest winds
20 to 30 mph becoming west 15 to 25 mph by midnight, then becoming
northwest 10 to 20 mph late. Waves 3 to 6 feet building to 4 to
7 feet, then subsiding to 2 to 4 feet.
.MONDAY...Cooler. Mostly sunny. Highs around 56 at the shore and
58 to 63 inland. Northwest winds 5 to 15 mph becoming southwest by
mid afternoon. Waves subsiding to calm to 1 foot building to 1 to
2 feet.
.MONDAY NIGHT...Mostly clear. Lows around 48. Southwest winds 10 to
15 mph becoming west 10 to 20 mph by midnight. Waves building to
2 to 3 feet.
.TUESDAY...Sunny. Highs around 54 at the shore and 57 to 62 inland.
West winds 15 to 20 mph becoming northwest 10 to 20 mph by late
morning. Waves building to 2 to 4 feet, then subsiding to 1 to
2 feet.
.TUESDAY NIGHT...Mostly clear. Lows around 44. North winds 5 to
15 mph. Waves subsiding to calm to 1 foot.
.WEDNESDAY...Sunny. Highs around 53 at the shore and 55 to
60 inland.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows around 48. Highs
around 58 at the shore and 61 to 66 inland.
.THURSDAY NIGHT...Mostly cloudy. Lows around 51.
.FRIDAY THROUGH SATURDAY...Mostly clear. Highs around 59 at the
shore and 62 to 67 inland. Lows around 51.
.SATURDAY NIGHT...Partly cloudy. Lows around 53.
.SUNDAY...A chance of rain showers by mid afternoon. Partly cloudy.
Highs around 60 at the shore and 63 to 68 inland. Chance of showers
30 percent.

&&

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

.TONIGHT...Breezy. Mostly cloudy early in the evening then becoming
partly cloudy. Lows around 49. Southwest winds 15 to 25 mph becoming
northwest 10 to 20 mph late. Waves 6 to 9 feet subsiding to 2 to
3 feet.
.MONDAY...Cooler. Mostly sunny. Highs 55 to 60. Northwest winds 5 to
15 mph becoming southwest by mid afternoon. Waves subsiding to calm
to 1 foot building to 2 to 3 feet.
.MONDAY NIGHT...Mostly clear. Lows around 47. West winds 10 to
20 mph. Waves 2 to 3 feet.
.TUESDAY...Sunny. Highs 54 to 59. West winds 10 to 20 mph becoming
northwest 5 to 15 mph by late morning. Waves subsiding to calm to
1 foot.
.TUESDAY NIGHT...Mostly clear. Lows around 43. North winds 5 to
10 mph. Waves calm to 1 foot.
.WEDNESDAY...Sunny. Highs 53 to 58.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows around 48. Highs
58 to 63.
.THURSDAY NIGHT...Mostly cloudy. Lows around 51.
.FRIDAY THROUGH SATURDAY...Mostly clear. Highs around 58 at the
shore and 60 to 65 inland. Lows around 51.
.SATURDAY NIGHT...Partly cloudy. Lows around 53.
.SUNDAY...A chance of rain showers by mid afternoon. Partly cloudy.
Highs 61 to 66. Chance of showers 30 percent.

&&


$$