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MIZ001-162000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Thu Oct 16 2025

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

.TODAY...Mostly cloudy through early afternoon, then a chance of
light rain by early afternoon. Cloudy with rain late. Highs around
55. Southeast winds 5 to 15 mph. Waves calm to 1 foot building to
1 to 2 feet, then subsiding to calm to 1 foot.
.TONIGHT...Light rain. Lows around 50. Southeast winds 5 to 15 mph
becoming south late. Chance of rain near 100 percent. Waves building
to 2 to 3 feet.
.FRIDAY...Warmer. Partly sunny with a 50 percent chance of rain
showers. Highs around 60 at the shore and 63 to 68 inland. South
winds 10 to 20 mph. Waves building to 2 to 4 feet.
.FRIDAY NIGHT...A 20 percent chance of rain showers through
midnight. Partly cloudy. Lows around 52. Southwest winds 10 to
20 mph. Waves building to 3 to 6 feet.
.SATURDAY...Mostly sunny. Highs 58 to 63. West winds 5 to 15 mph.
Waves subsiding to 2 to 3 feet.
.SATURDAY NIGHT...Mostly cloudy. Lows around 47.
.SUNDAY THROUGH MONDAY...Partly cloudy. Highs 53 to 58. Lows around
45.
.MONDAY NIGHT...A chance of rain showers late. Mostly cloudy. Lows
around 46. Chance of showers 30 percent.
.TUESDAY...Partly sunny with a 50 percent chance of rain showers.
Highs 52 to 57.
.TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy with a 40 percent
chance of rain showers. Lows around 43. Highs 49 to 54.

&&

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

.TODAY...Partly sunny through early afternoon, then cloudy with a
slight chance of light rain by early afternoon. Cloudy with rain
late. Highs around 53. Southeast winds 5 to 15 mph. Waves calm to
1 foot building to 2 to 3 feet.
.TONIGHT...Light rain. Lows around 50. Southeast winds 10 to 20 mph
becoming south 5 to 15 mph late. Chance of rain near 100 percent.
Waves building to 3 to 5 feet.
.FRIDAY...Warmer. Mostly cloudy with a 50 percent chance of rain
showers. Highs 58 to 63. South winds 5 to 15 mph. Waves subsiding to
2 to 3 feet, then building to 2 to 4 feet.
.FRIDAY NIGHT...A 20 percent chance of rain showers through
midnight. Partly cloudy. Lows around 52. Southwest winds 10 to
20 mph. Waves building to 3 to 5 feet.
.SATURDAY...Partly cloudy. Highs 55 to 60. West winds 5 to 15 mph.
Waves subsiding to 1 to 2 feet.
.SATURDAY NIGHT AND SUNDAY...Mostly cloudy. Lows around 47. Highs
51 to 56.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows around 46. Highs
51 to 56.
.MONDAY NIGHT...A chance of rain showers late. Mostly cloudy. Lows
around 46. Chance of showers 30 percent.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy with a 50 percent chance
of rain showers. Highs 50 to 55. Lows around 43.
.WEDNESDAY...Mostly cloudy with a 40 percent chance of rain showers.
Highs 47 to 52.

&&

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

.TODAY...Mostly cloudy through early afternoon, then a slight chance
of light rain by early afternoon. Cloudy with rain late. Highs
around 55. Southeast winds 5 to 15 mph. Waves calm to 1 foot
building to 2 to 3 feet.
.TONIGHT...Light rain. Lows around 50. Southeast winds 10 to 20 mph
becoming south late. Chance of rain near 100 percent. Waves building
to 2 to 4 feet.
.FRIDAY...Warmer. Partly sunny with a 50 percent chance of rain
showers. Highs around 61 at the shore and 63 to 68 inland. South
winds 10 to 20 mph. Waves 2 to 3 feet.
.FRIDAY NIGHT...A 20 percent chance of rain showers through
midnight. Partly cloudy. Lows around 52. Southwest winds 10 to
20 mph. Waves 2 to 3 feet.
.SATURDAY...Partly cloudy. Highs around 57 at the shore and 59 to
64 inland. West winds 10 to 15 mph. Waves subsiding to 1 to 2 feet.
.SATURDAY NIGHT...Mostly cloudy. Lows around 47.
.SUNDAY THROUGH MONDAY...Partly cloudy. Highs around 53 at the shore
and 55 to 60 inland. Lows around 46.
.MONDAY NIGHT...Mostly cloudy. Lows around 46.
.TUESDAY...Partly sunny with a 50 percent chance of rain showers.
Highs 51 to 56.
.TUESDAY NIGHT AND WEDNESDAY...Breezy. Mostly cloudy with a
40 percent chance of rain showers. Lows around 43. Highs around
49 at the shore and 51 to 56 inland.

&&

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

.TODAY...Partly sunny through early afternoon, then cloudy with a
chance of light rain by early afternoon. Cloudy with rain late.
Highs around 54. Southeast winds 5 to 15 mph. Waves calm to 1 foot
building to 1 to 2 feet, then subsiding to calm to 1 foot.
.TONIGHT...Light rain. Lows around 50. Southeast winds 5 to 15 mph
becoming south late. Chance of rain near 100 percent. Waves building
to 2 to 3 feet.
.FRIDAY...Warmer. Partly sunny with a 50 percent chance of rain
showers. Highs 60 to 65. South winds 5 to 15 mph. Waves 2 to 3 feet.
.FRIDAY NIGHT...A 20 percent chance of rain showers through
midnight. Partly cloudy. Lows around 51. Southwest winds 10 to
20 mph. Waves building to 3 to 6 feet.
.SATURDAY...Partly cloudy. Highs 56 to 61. West winds 5 to 15 mph.
Waves subsiding to 2 to 3 feet.
.SATURDAY NIGHT...Mostly cloudy. Lows around 46.
.SUNDAY THROUGH MONDAY...Partly cloudy. Highs 52 to 57. Lows around
45.
.MONDAY NIGHT...A chance of rain showers late. Mostly cloudy. Lows
around 45. Chance of showers 30 percent.
.TUESDAY...Mostly cloudy with a 50 percent chance of rain showers.
Highs 51 to 56.
.TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy with a 40 percent
chance of rain showers. Lows around 43. Highs 48 to 53.

&&


$$