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SXUS43 KMQT 220901
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MIZ001-222000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Fri Aug 22 2025

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

.TODAY...A slight chance of showers by late morning. A slight chance
of showers and thunderstorms by mid afternoon. Partly sunny. Highs
around 67 at the shore and 71 to 76 inland. Southwest winds 5 to
15 mph. Waves 1 to 2 feet.
.TONIGHT...A 20 percent chance of showers through midnight. Partly
cloudy. Lows around 60. Southwest winds 10 to 15 mph becoming west
late. Waves 1 to 2 feet.
.SATURDAY...Sunny through early afternoon then becoming partly
cloudy. Highs around 67. West winds 10 to 20 mph. Waves building to
2 to 4 feet.
.SATURDAY NIGHT...Partly cloudy through midnight, then mostly cloudy
with a 20 percent chance of rain showers late. Lows around 54. West
winds 10 to 20 mph. Waves 2 to 4 feet.
.SUNDAY...A slight chance of rain showers through early afternoon,
then a chance of rain showers by mid afternoon. Mostly cloudy. Highs
around 60. Northwest winds 10 to 20 mph. Chance of showers
40 percent. Waves building to 2 to 4 feet.
.SUNDAY NIGHT...Mostly cloudy. Lows around 53.
.MONDAY...A 30 percent chance of rain showers through early
afternoon. Partly cloudy. Highs around 64.
.MONDAY NIGHT...Partly cloudy. Lows around 52.
.TUESDAY...Sunny. Highs around 67.
.TUESDAY NIGHT THROUGH THURSDAY...Partly cloudy. Lows around 58.
Highs 67 to 72.

&&

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

.TODAY...A 20 percent chance of showers and thunderstorms by mid
afternoon. Partly sunny. Highs around 65 at the shore and 70 to
75 inland. West winds 5 to 10 mph becoming southwest 5 to 15 mph by
mid afternoon. Waves 1 to 2 feet.
.TONIGHT...A slight chance of showers and thunderstorms through
midnight, then a slight chance of showers late. Partly cloudy. Lows
around 60. Southwest winds 10 to 15 mph becoming west late. Chance
of precipitation 20 percent. Waves 1 to 2 feet.
.SATURDAY...Sunny. Highs around 65. West winds 10 to 15 mph. Waves
building to 2 to 3 feet.
.SATURDAY NIGHT...Partly cloudy through midnight then becoming
mostly cloudy. Lows around 55. Northwest winds 10 to 15 mph. Waves
2 to 3 feet.
.SUNDAY...A 30 percent chance of rain showers by mid afternoon.
Mostly cloudy. Highs around 58. Northwest winds 10 to 20 mph. Waves
2 to 3 feet.
.SUNDAY NIGHT...A chance of rain showers through midnight. Mostly
cloudy. Lows around 53. Chance of showers 40 percent.
.MONDAY...A 30 percent chance of rain showers through early
afternoon. Partly cloudy. Highs around 62.
.MONDAY NIGHT...Partly cloudy. Lows around 53.
.TUESDAY...Sunny. Highs around 65.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows around 58. Highs
around 67.
.WEDNESDAY NIGHT...Partly cloudy through midnight then becoming
mostly cloudy. Lows around 59.
.THURSDAY...Partly cloudy. Highs around 67.

&&

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

.TODAY...A 20 percent chance of showers and thunderstorms by mid
afternoon. Partly sunny. Highs around 66 at the shore and 70 to
75 inland. West winds 5 to 10 mph becoming southwest 5 to 15 mph by
mid afternoon. Waves calm to 1 foot.
.TONIGHT...A slight chance of showers and thunderstorms through
midnight, then a slight chance of showers late. Partly cloudy. Lows
around 60. Southwest winds 10 to 15 mph becoming west late. Chance
of precipitation 20 percent. Waves building to 1 to 2 feet.
.SATURDAY...Sunny. Highs around 66. West winds 10 to 20 mph. Waves
building to 2 to 3 feet.
.SATURDAY NIGHT...Partly cloudy through midnight then becoming
mostly cloudy. Lows around 55. West winds 10 to 20 mph. Waves 2 to
3 feet.
.SUNDAY...A 30 percent chance of rain showers by mid afternoon.
Partly sunny. Highs around 59. Northwest winds 10 to 20 mph. Waves
building to 2 to 4 feet.
.SUNDAY NIGHT...Breezy. A chance of rain showers through midnight.
Mostly cloudy. Lows around 53. Chance of showers 30 percent.
.MONDAY...A 30 percent chance of rain showers through early
afternoon. Partly cloudy. Highs around 63.
.MONDAY NIGHT...Partly cloudy. Lows around 53.
.TUESDAY...Sunny. Highs around 66.
.TUESDAY NIGHT THROUGH THURSDAY...Partly cloudy. Lows around 59.
Highs around 68.

&&

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

.TODAY...A slight chance of showers by late morning. A slight chance
of showers and thunderstorms by mid afternoon. Partly sunny. Highs
69 to 74. West winds 5 to 15 mph. Waves 1 to 2 feet.
.TONIGHT...Partly cloudy with a 20 percent chance of showers. Lows
around 60. Southwest winds 10 to 15 mph becoming west late. Waves
1 to 2 feet.
.SATURDAY...Sunny through early afternoon then becoming partly
cloudy. Highs around 66. West winds 10 to 20 mph. Waves building to
2 to 4 feet.
.SATURDAY NIGHT...Partly cloudy through midnight, then mostly cloudy
with a 20 percent chance of rain showers late. Lows around 54.
Northwest winds 10 to 20 mph. Waves subsiding to 1 to 2 feet.
.SUNDAY...A slight chance of rain showers through early afternoon,
then a chance of rain showers by mid afternoon. Mostly cloudy. Highs
around 60. Northwest winds 10 to 20 mph. Chance of showers
30 percent. Waves 1 to 2 feet.
.SUNDAY NIGHT...Mostly cloudy. Lows around 53.
.MONDAY...Partly sunny with a 30 percent chance of rain showers
through early afternoon, then mostly sunny by mid afternoon. Highs
around 63.
.MONDAY NIGHT...Partly cloudy. Lows around 53.
.TUESDAY...Sunny. Highs around 66.
.TUESDAY NIGHT THROUGH THURSDAY...Partly cloudy. Lows around 59.
Highs 67 to 72.

&&


$$