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SXUS43 KMQT 230901
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MIZ001-232000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Sat Aug 23 2025

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

.TODAY...Mostly sunny. Highs around 68. West winds 10 to 20 mph.
Waves 2 to 3 feet subsiding to 1 to 2 feet, then building to 2 to
3 feet.
.TONIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 55. Northwest winds 10 to 20 mph. Waves 2 to
3 feet.
.SUNDAY...Mostly cloudy with a 20 percent chance of rain showers.
Highs 64 to 69. Northwest winds 10 to 20 mph. Waves 2 to 3 feet.
.SUNDAY NIGHT...Mostly cloudy through midnight then becoming partly
cloudy. Lows around 54. Northwest winds 10 to 20 mph. Waves 2 to
3 feet.
.MONDAY...Sunny. Highs around 66 at the shore and 69 to 74 inland.
Northwest winds 5 to 15 mph. Waves subsiding to calm to 1 foot.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows around 56. Highs
around 67 at the shore and 71 to 76 inland.
.TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Partly cloudy. Lows around
60. Highs around 68 at the shore and 72 to 77 inland.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs around 65 at the
shore and 70 to 75 inland. Lows around 59.

&&

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

.TODAY...Mostly sunny. Highs around 67. West winds 10 to 20 mph.
Waves 1 to 2 feet building to 2 to 3 feet, then subsiding to 1 to
2 feet.
.TONIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 55. Northwest winds 10 to 20 mph. Waves building
to 2 to 3 feet.
.SUNDAY...Mostly cloudy. Highs 59 to 64. Northwest winds 10 to
20 mph. Waves 2 to 3 feet.
.SUNDAY NIGHT...Mostly cloudy. Lows around 54. Northwest winds 10 to
20 mph. Waves 2 to 3 feet.
.MONDAY...Sunny. Highs around 63 at the shore and 66 to 71 inland.
Northwest winds 5 to 15 mph. Waves subsiding to calm to 1 foot.
.MONDAY NIGHT...Partly cloudy. Lows around 56.
.TUESDAY...Sunny. Highs around 65 at the shore and 67 to 72 inland.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows around 59. Highs
around 65 at the shore and 68 to 73 inland.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 57.
.THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs around 61 at the
shore and 64 to 69 inland. Lows around 58.
.FRIDAY...Mostly sunny. Highs around 64 at the shore and 67 to
72 inland.

&&

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

.TODAY...Mostly sunny. Highs around 67. West winds 15 to 20 mph.
Waves 1 to 2 feet building to 2 to 3 feet subsiding to 1 to 2 feet.
.TONIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 56. Northwest winds 10 to 20 mph. Waves building
to 2 to 3 feet.
.SUNDAY...Mostly cloudy. Highs 62 to 67. Northwest winds 10 to
20 mph. Waves 2 to 3 feet.
.SUNDAY NIGHT...Mostly cloudy. Lows around 55. Northwest winds 10 to
20 mph. Waves 2 to 3 feet.
.MONDAY...Sunny. Highs around 63 at the shore and 69 to 74 inland.
Northwest winds 5 to 15 mph. Waves subsiding to calm to 1 foot.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows around 57. Highs
around 65 at the shore and 71 to 76 inland.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows around 59. Highs
around 66 at the shore and 72 to 77 inland.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 58.
.THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs around 64 at the
shore and 67 to 72 inland. Lows around 59.
.FRIDAY...Mostly sunny. Highs around 67 at the shore and 71 to
76 inland.

&&

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

.TODAY...Mostly sunny. Highs around 68. West winds 10 to 20 mph.
Waves 1 to 2 feet.
.TONIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 55. Northwest winds 10 to 20 mph. Waves 1 to
2 feet.
.SUNDAY...Mostly cloudy with a 20 percent chance of rain showers.
Highs around 60 at the shore and 62 to 67 inland. Northwest winds
10 to 20 mph. Waves subsiding to calm to 1 foot, then building to
1 to 2 feet.
.SUNDAY NIGHT...Mostly cloudy. Lows around 54. Northwest winds 10 to
20 mph. Waves calm to 1 foot.
.MONDAY...Warmer. Mostly sunny. Highs around 63 at the shore and
68 to 73 inland. Northwest winds 5 to 15 mph. Waves calm to 1 foot.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows around 56. Highs
around 64 at the shore and 70 to 75 inland.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows around 59. Highs
around 65 at the shore and 71 to 76 inland.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 58.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs around 61 at the
shore and 69 to 74 inland. Lows around 58.

&&


$$