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SXUS43 KMQT 190901
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MIZ001-192000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Sat Sep 19 2026

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

.TODAY...Partly sunny. Highs 60 to 65. South winds up to 10 mph.
Waves calm to 1 foot.
.TONIGHT...A 20 percent chance of rain showers. Mostly cloudy
through midnight then becoming partly cloudy. Lows around 51. West
winds up to 5 mph becoming north by midnight, then becoming
northeast 10 to 20 mph late. Waves building to 2 to 3 feet.
.SUNDAY...Breezy. Partly sunny through early afternoon then
clearing. Highs around 58. Northeast winds 10 to 20 mph. Waves
building to 2 to 4 feet subsiding to 1 to 2 feet.
.SUNDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 50. Northeast winds 5 to 10 mph becoming east
late. Waves subsiding to calm to 1 foot.
.MONDAY...Partly cloudy through early afternoon then clearing. Highs
around 56. East winds 5 to 10 mph. Waves calm to 1 foot.
.MONDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows around 50. Highs
around 56 at the shore and 58 to 63 inland.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows around 53. Highs
around 63.

&&

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

.TODAY...Warmer. Partly sunny. Highs 59 to 64. South winds 5 to
10 mph. Waves calm to 1 foot.
.TONIGHT...Mostly cloudy with a 20 percent chance of rain showers
through midnight, then partly cloudy late. Lows around 51. Southwest
winds up to 5 mph becoming northwest by midnight, then becoming
north 10 to 20 mph late. Waves building to 2 to 3 feet.
.SUNDAY...Partly sunny through early afternoon then clearing. Highs
around 57. Northeast winds 10 to 20 mph. Waves building to 2 to
4 feet subsiding to 1 to 2 feet.
.SUNDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 49. Northeast winds 5 to 15 mph becoming east
late. Waves subsiding to calm to 1 foot building to 1 to 2 feet.
.MONDAY...Partly cloudy through early afternoon then clearing. Highs
51 to 56. East winds up to 10 mph. Waves subsiding to calm to
1 foot.
.MONDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows around 51. Highs
around 55 at the shore and 58 to 63 inland.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows around 53. Highs
59 to 64.

&&

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

.TODAY...Partly sunny. Highs around 61. South winds 5 to 10 mph.
Waves calm to 1 foot.
.TONIGHT...A 20 percent chance of rain showers. Mostly cloudy
through midnight then becoming partly cloudy. Lows around 51.
Southwest winds up to 5 mph becoming northwest by midnight, then
becoming north 10 to 20 mph late. Waves building to 2 to 3 feet.
.SUNDAY...Partly sunny through early afternoon then clearing. Highs
around 58. Northeast winds 10 to 20 mph. Waves building to 2 to
4 feet subsiding to 1 to 2 feet.
.SUNDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 50. Northeast winds 5 to 15 mph becoming east
late. Waves subsiding to calm to 1 foot.
.MONDAY...Partly cloudy through early afternoon then clearing. Highs
around 56. East winds 5 to 10 mph. Waves calm to 1 foot.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows around 50. Highs
around 58.
.TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows around 53.
Highs around 60.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows around 54. Highs
around 62.

&&

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

.TODAY...Partly sunny. Highs 59 to 64. Southeast winds 5 to 10 mph.
Waves calm to 1 foot.
.TONIGHT...A 20 percent chance of rain showers. Mostly cloudy
through midnight then becoming partly cloudy. Lows around 51.
Northeast winds up to 5 mph becoming north by midnight, then
increasing to 10 to 20 mph late. Waves building to 1 to 2 feet.
.SUNDAY...Partly sunny through early afternoon then clearing. Highs
56 to 61. Northeast winds 10 to 20 mph. Waves building to 2 to
3 feet subsiding to 1 to 2 feet.
.SUNDAY NIGHT...Mostly cloudy. Lows around 49. Northeast winds 5 to
10 mph becoming east late. Waves subsiding to calm to 1 foot
building to 1 to 2 feet.
.MONDAY...Partly cloudy through early afternoon then clearing. Highs
52 to 57. East winds 5 to 10 mph. Waves subsiding to calm to 1 foot.
.MONDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows around 49. Highs
57 to 62.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows around 53. Highs
59 to 64.

&&


$$