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MIZ001-120800-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 PM EDT Sat Oct 11 2025

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

.TONIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 52. Southeast winds 10 to 20 mph becoming south
15 to 20 mph late. Waves calm to 1 foot building to 3 to 5 feet.
.SUNDAY...Mostly cloudy with a 20 percent chance of rain showers.
Highs 60 to 65. South winds 15 to 20 mph. Waves 3 to 5 feet.
.SUNDAY NIGHT...Breezy. A chance of rain showers through midnight,
then rain showers late. Mostly cloudy. Lows around 53. South winds
15 to 25 mph. Chance of showers 90 percent. Waves building to 4 to
7 feet.
.COLUMBUS DAY...Breezy. A 20 percent chance of rain showers through
early afternoon. Sunny. Highs around 57 at the shore and 60 to
65 inland. Southwest winds 10 to 20 mph becoming west by mid
afternoon. Waves subsiding to 2 to 4 feet.
.MONDAY NIGHT...Mostly clear. Lows around 43. Northwest winds 10 to
20 mph becoming 10 to 15 mph late. Waves subsiding to 1 to 2 feet.
.TUESDAY...Mostly sunny. Highs 51 to 56.
.TUESDAY NIGHT...Mostly cloudy. Lows around 42.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 52 to 57. Lows
around 45.
.THURSDAY...Mostly sunny through early afternoon, then partly sunny
with a 40 percent chance of rain showers by mid afternoon. Highs
54 to 59.
.THURSDAY NIGHT AND FRIDAY...Rain showers likely. Lows around 49.
Highs 55 to 60. Chance of showers 60 percent.
.FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of rain
showers. Lows around 48.
.SATURDAY...A chance of rain showers through early afternoon. Mostly
cloudy. Highs 55 to 60. Chance of showers 30 percent.

&&

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

.TONIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 51. Southeast winds 10 to 20 mph becoming south
15 to 20 mph late. Waves 1 to 2 feet building to 3 to 5 feet.
.SUNDAY...Breezy. A 20 percent chance of rain showers by mid
afternoon. Mostly cloudy. Highs 57 to 62. South winds 15 to 25 mph.
Waves building to 5 to 8 feet.
.SUNDAY NIGHT...Breezy. A chance of rain showers through midnight,
then rain showers late. Mostly cloudy. Lows around 53. South winds
15 to 25 mph. Chance of showers 90 percent. Waves building to 6 to
9 feet.
.COLUMBUS DAY...Breezy. A 40 percent chance of rain showers through
early afternoon. Sunny. Highs 56 to 61. Southwest winds 15 to 25 mph
becoming west 10 to 20 mph by late morning, then becoming 10 to
15 mph late. Waves subsiding to 2 to 3 feet.
.MONDAY NIGHT...Mostly clear. Lows around 43. Northwest winds 10 to
20 mph becoming 15 to 20 mph late. Waves 2 to 3 feet.
.TUESDAY...Partly cloudy. Highs 49 to 54.
.TUESDAY NIGHT...Mostly cloudy through midnight then becoming partly
cloudy. Lows around 42.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 49 to 54. Lows
around 44.
.THURSDAY...A 30 percent chance of rain showers by mid afternoon.
Partly cloudy. Highs 51 to 56.
.THURSDAY NIGHT AND FRIDAY...Rain showers likely. Lows around 47.
Highs 52 to 57. Chance of showers 60 percent.
.FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of rain
showers. Lows around 48.
.SATURDAY...A chance of rain showers through early afternoon. Mostly
cloudy. Highs 52 to 57. Chance of showers 30 percent.

&&

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

.TONIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 51. Southeast winds 10 to 20 mph becoming south
15 to 20 mph late. Waves calm to 1 foot building to 2 to 4 feet.
.SUNDAY...Breezy. A 20 percent chance of rain showers by mid
afternoon. Mostly cloudy. Highs 59 to 64. South winds 15 to 25 mph.
Waves building to 3 to 6 feet.
.SUNDAY NIGHT...Breezy. A chance of rain showers through midnight,
then rain showers late. Mostly cloudy. Lows around 53. South winds
15 to 25 mph. Chance of showers 90 percent. Waves building to 4 to
7 feet.
.COLUMBUS DAY...Breezy. A 30 percent chance of rain showers through
early afternoon. Sunny. Highs around 58 at the shore and 60 to
65 inland. Southwest winds 15 to 25 mph becoming west 10 to 20 mph
late. Waves subsiding to 2 to 4 feet.
.MONDAY NIGHT...Mostly clear. Lows around 43. Northwest winds 10 to
20 mph becoming 15 to 20 mph late. Waves 2 to 4 feet.
.TUESDAY...Mostly sunny. Highs around 51 at the shore and 53 to
58 inland.
.TUESDAY NIGHT...Mostly cloudy through midnight then becoming partly
cloudy. Lows around 42.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs around 51 at
the shore and 53 to 58 inland. Lows around 45.
.THURSDAY...Mostly sunny through early afternoon, then partly sunny
with a 30 percent chance of rain showers by mid afternoon. Highs
around 53 at the shore and 55 to 60 inland.
.THURSDAY NIGHT AND FRIDAY...Rain showers likely. Lows around 48.
Highs around 54 at the shore and 56 to 61 inland. Chance of showers
60 percent.
.FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of rain
showers. Lows around 48.
.SATURDAY...A chance of rain showers through early afternoon. Mostly
cloudy. Highs around 54 at the shore and 56 to 61 inland. Chance of
showers 30 percent.

&&

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

.TONIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 51. Southeast winds 10 to 20 mph becoming south
15 to 20 mph late. Waves calm to 1 foot building to 3 to 5 feet.
.SUNDAY...Mostly cloudy with a 20 percent chance of rain showers.
Highs 59 to 64. South winds 15 to 20 mph. Waves 3 to 5 feet.
.SUNDAY NIGHT...Breezy. A chance of rain showers through midnight,
then rain showers late. Mostly cloudy. Lows around 52. Southeast
winds 15 to 25 mph becoming south late. Chance of showers
90 percent. Waves building to 4 to 7 feet.
.COLUMBUS DAY...Breezy. A 20 percent chance of rain showers through
early afternoon. Sunny. Highs 57 to 62. Southwest winds 15 to 25 mph
becoming west 10 to 20 mph by mid afternoon. Waves subsiding to 2 to
4 feet.
.MONDAY NIGHT...Mostly clear. Lows around 42. Northwest winds 10 to
15 mph. Waves subsiding to calm to 1 foot.
.TUESDAY...Partly cloudy. Highs 50 to 55.
.TUESDAY NIGHT...Mostly cloudy. Lows around 42.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 50 to 55. Lows
around 44.
.THURSDAY...A 40 percent chance of rain showers by mid afternoon.
Partly cloudy. Highs around 51 at the shore and 54 to 59 inland.
.THURSDAY NIGHT AND FRIDAY...Rain showers likely. Lows around 48.
Highs 53 to 58. Chance of showers 60 percent.
.FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of rain
showers. Lows around 48.
.SATURDAY...A chance of rain showers through early afternoon. Mostly
cloudy. Highs 53 to 58. Chance of showers 30 percent.

&&


$$