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MIZ001-100800-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 PM EDT Thu Oct 9 2025

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

.TONIGHT...Breezy. Partly cloudy early in the evening then becoming
cloudy. A chance of rain showers by midnight. Rain showers late,
then rain showers likely late. Lows around 51. South winds 10 to
20 mph becoming southwest 15 to 25 mph by midnight. Waves 2 to
3 feet building to 3 to 6 feet.
.FRIDAY...Breezy. Partly sunny with a 50 percent chance of rain
showers. Highs 56 to 61. West winds 10 to 20 mph becoming north
15 to 25 mph late. Waves 3 to 6 feet.
.FRIDAY NIGHT...Partly cloudy. Lows around 49. North winds 10 to
20 mph decreasing to 5 to 15 mph late. Waves subsiding to 1 to
2 feet.
.SATURDAY...Partly cloudy. Highs 57 to 62. Northeast winds 5 to
10 mph becoming east by late morning. Waves subsiding to calm to
1 foot.
.SATURDAY NIGHT...Partly cloudy. Lows around 52. Southeast winds
5 to 15 mph increasing to 10 to 20 mph late. Waves building to 2 to
3 feet.
.SUNDAY...Partly sunny. Highs 60 to 65.
.SUNDAY NIGHT...Breezy. A chance of rain showers through midnight,
then rain showers likely late. Mostly cloudy. Lows around 54. Chance
of showers 70 percent.
.COLUMBUS DAY...Mostly cloudy with a chance of rain showers through
early afternoon, then partly cloudy by mid afternoon. Highs 59 to
64. Chance of showers 50 percent.
.MONDAY NIGHT THROUGH WEDNESDAY...Partly cloudy. Lows around 43.
Highs around 49 at the shore and 53 to 58 inland.
.WEDNESDAY NIGHT...Partly cloudy through midnight, then mostly
cloudy with a chance of rain showers late. Lows around 44. Chance of
showers 30 percent.
.THURSDAY...Partly sunny with a 40 percent chance of rain showers.
Highs around 50 at the shore and 53 to 58 inland.

&&

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

.TONIGHT...Breezy. A chance of rain showers by midnight. Rain
showers late. Partly cloudy early in the evening then becoming
cloudy. Lows around 51. South winds 10 to 20 mph becoming southwest
15 to 25 mph by midnight. Waves 2 to 3 feet building to 3 to 6 feet.
.FRIDAY...Breezy. Mostly cloudy with a 50 percent chance of rain
showers. Highs 54 to 59. West winds 15 to 20 mph becoming northwest
15 to 25 mph by mid afternoon. Waves 3 to 6 feet.
.FRIDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 49. North winds 10 to 20 mph decreasing to 5 to
15 mph late. Waves subsiding to 1 to 2 feet.
.SATURDAY...Partly sunny. Highs 54 to 59. Northeast winds 5 to
10 mph becoming southeast late. Waves subsiding to calm to 1 foot.
.SATURDAY NIGHT...Partly cloudy. Lows around 51. Southeast winds
5 to 15 mph becoming south 10 to 20 mph late. Waves building to 2 to
4 feet.
.SUNDAY...Partly sunny. Highs 57 to 62.
.SUNDAY NIGHT AND COLUMBUS DAY...Breezy. Rain showers likely. Mostly
cloudy. Lows around 53. Highs 56 to 61. Chance of showers
60 percent.
.MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows around 43. Highs
49 to 54.
.TUESDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 41.
.WEDNESDAY...Partly cloudy. Highs 47 to 52.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 43.
.THURSDAY...Partly sunny with a 40 percent chance of rain showers.
Highs 50 to 55.

&&

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

.TONIGHT...Breezy. Partly cloudy early in the evening then becoming
cloudy. A chance of rain showers by midnight. Rain showers late,
then rain showers likely late. Lows around 51. South winds 10 to
20 mph becoming southwest 15 to 25 mph by midnight. Waves 1 to
2 feet building to 2 to 4 feet.
.FRIDAY...Breezy. Mostly cloudy with a 50 percent chance of rain
showers. Highs 56 to 61. West winds 15 to 20 mph becoming northwest
15 to 25 mph by mid afternoon. Waves building to 3 to 5 feet.
.FRIDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 49. North winds 10 to 20 mph becoming northeast
5 to 15 mph late. Waves subsiding to 1 to 2 feet.
.SATURDAY...Partly cloudy. Highs around 56 at the shore and 59 to
64 inland. Northeast winds 5 to 10 mph becoming southeast late.
Waves subsiding to calm to 1 foot.
.SATURDAY NIGHT...Partly cloudy. Lows around 51. Southeast winds
5 to 15 mph becoming south 10 to 20 mph late. Waves building to 2 to
3 feet.
.SUNDAY...Partly sunny. Highs around 59 at the shore and 61 to
66 inland.
.SUNDAY NIGHT AND COLUMBUS DAY...Breezy. Rain showers likely. Mostly
cloudy. Lows around 54. Highs around 58 at the shore and 61 to
66 inland. Chance of showers 60 percent.
.MONDAY NIGHT THROUGH WEDNESDAY...Partly cloudy. Lows around 42.
Highs around 50 at the shore and 54 to 59 inland.
.WEDNESDAY NIGHT...Partly cloudy through midnight then becoming
mostly cloudy. Lows around 43.
.THURSDAY...Partly sunny with a 40 percent chance of rain showers.
Highs around 51 at the shore and 54 to 59 inland.

&&

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

.TONIGHT...Breezy. Partly cloudy early in the evening then becoming
cloudy. A chance of rain showers by midnight. Rain showers late,
then rain showers likely late. Lows around 51. South winds 10 to
20 mph becoming southwest 15 to 25 mph by midnight. Waves 2 to
3 feet building to 3 to 6 feet.
.FRIDAY...Rain showers likely through early afternoon, then a chance
of rain showers by mid afternoon. Partly sunny. Highs 55 to 60. West
winds 10 to 20 mph becoming north 15 to 20 mph late. Chance of
showers 60 percent. Waves subsiding to 1 to 2 feet.
.FRIDAY NIGHT...Partly cloudy. Lows around 48. North winds 5 to
15 mph becoming 5 to 10 mph late. Waves subsiding to calm to 1 foot.
.SATURDAY...Partly cloudy. Highs 56 to 61. Northeast winds 5 to
10 mph becoming east by late morning. Waves calm to 1 foot.
.SATURDAY NIGHT...Partly cloudy. Lows around 51. Southeast winds
5 to 15 mph increasing to 10 to 20 mph late. Waves building to 2 to
3 feet.
.SUNDAY...Partly sunny. Highs 59 to 64.
.SUNDAY NIGHT...A chance of rain showers through midnight, then rain
showers likely late. Mostly cloudy. Lows around 54. Chance of
showers 70 percent.
.COLUMBUS DAY...Mostly cloudy with a chance of rain showers through
early afternoon, then partly cloudy by mid afternoon. Highs 58 to
63. Chance of showers 50 percent.
.MONDAY NIGHT THROUGH WEDNESDAY...Partly cloudy. Lows around 43.
Highs around 49 at the shore and 52 to 57 inland.
.WEDNESDAY NIGHT...Partly cloudy through midnight, then mostly
cloudy with a chance of rain showers late. Lows around 43. Chance of
showers 30 percent.
.THURSDAY...Partly sunny with a 40 percent chance of rain showers.
Highs 51 to 56.

&&


$$