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MIZ001-282000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Thu Aug 28 2025

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

.TODAY...Sunny. Highs around 60. Northeast winds 5 to 15 mph
becoming southeast 5 to 10 mph late. Waves 2 to 3 feet subsiding to
calm to 1 foot.
.TONIGHT...Partly cloudy. Lows 49 to 54. South winds 5 to 10 mph.
Waves calm to 1 foot.
.FRIDAY...Sunny. Highs around 62. South winds 5 to 10 mph. Waves
calm to 1 foot.
.FRIDAY NIGHT...Mostly clear. Lows around 56. South winds 5 to
10 mph becoming southwest late. Waves calm to 1 foot.
.SATURDAY...Warmer, sunny. Highs 67 to 72. Southwest winds 5 to
10 mph. Waves calm to 1 foot.
.SATURDAY NIGHT THROUGH LABOR DAY...Mostly clear. Lows around 60.
Highs around 72.
.MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows around 60. Highs
around 68.
.TUESDAY NIGHT...A chance of rain showers. Mostly cloudy. Lows
around 55. Chance of showers 50 percent.
.WEDNESDAY...Mostly cloudy with a 50 percent chance of rain showers.
Highs around 61.

&&

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

.TODAY...Sunny. Highs 55 to 60. Northeast winds 10 to 15 mph
becoming southeast 5 to 10 mph late. Waves 2 to 3 feet subsiding to
calm to 1 foot.
.TONIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows 51 to 56. South winds 5 to 10 mph. Waves calm to
1 foot.
.FRIDAY...Sunny. Highs around 60. South winds 5 to 10 mph. Waves
calm to 1 foot.
.FRIDAY NIGHT...Mostly clear. Lows around 56. South winds 5 to
10 mph becoming southwest late. Waves calm to 1 foot.
.SATURDAY...Warmer, sunny. Highs 65 to 70. Southwest winds 5 to
10 mph. Waves calm to 1 foot.
.SATURDAY NIGHT THROUGH LABOR DAY...Mostly clear. Lows around 59.
Highs 67 to 72.
.MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows around 60. Highs
around 67.
.TUESDAY NIGHT...A chance of rain showers. Mostly cloudy. Lows 53 to
58. Chance of showers 50 percent.
.WEDNESDAY...Mostly cloudy with a 50 percent chance of rain showers.
Highs around 59.

&&

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

.TODAY...Cooler, sunny. Highs around 58. Northeast winds 10 to
15 mph becoming southeast 5 to 10 mph late. Waves 2 to 3 feet
subsiding to calm to 1 foot.
.TONIGHT...Partly cloudy. Lows 51 to 56. South winds 5 to 10 mph.
Waves calm to 1 foot.
.FRIDAY...Sunny. Highs around 61. South winds 5 to 10 mph. Waves
calm to 1 foot.
.FRIDAY NIGHT...Mostly clear. Lows around 56. South winds 5 to
10 mph becoming southwest late. Waves calm to 1 foot.
.SATURDAY...Warmer, sunny. Highs 66 to 71. Southwest winds 5 to
15 mph. Waves calm to 1 foot.
.SATURDAY NIGHT THROUGH LABOR DAY...Mostly clear. Lows around 59.
Highs 69 to 74.
.MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows around 59. Highs
around 68.
.TUESDAY NIGHT...A chance of rain showers. Mostly cloudy. Lows
around 55. Chance of showers 50 percent.
.WEDNESDAY...Mostly cloudy with a 50 percent chance of rain showers.
Highs around 60.

&&

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

.TODAY...Sunny. Highs 56 to 61. Northeast winds 10 to 15 mph
becoming southeast 5 to 10 mph late. Waves 1 to 2 feet subsiding to
calm to 1 foot.
.TONIGHT...Partly cloudy. Lows 50 to 55. Southeast winds 5 to 10 mph
becoming south late. Waves calm to 1 foot.
.FRIDAY...Sunny. Highs 59 to 64. South winds 5 to 10 mph. Waves calm
to 1 foot.
.FRIDAY NIGHT...Mostly clear. Lows around 56. South winds 5 to
10 mph becoming southwest late. Waves calm to 1 foot.
.SATURDAY...Warmer, sunny. Highs 67 to 72. Southwest winds 5 to
10 mph. Waves calm to 1 foot.
.SATURDAY NIGHT THROUGH LABOR DAY...Mostly clear. Lows around 59.
Highs around 72.
.MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows around 59. Highs
around 68.
.TUESDAY NIGHT...A chance of rain showers. Mostly cloudy. Lows 53 to
58. Chance of showers 50 percent.
.WEDNESDAY...Mostly cloudy with a 50 percent chance of rain showers.
Highs around 61.

&&


$$