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SXUS43 KMQT 212103
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MIZ001-220800-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
502 PM EDT Mon Sep 21 2026

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

.TONIGHT...Mostly clear. Lows around 47. East winds up to 10 mph.
Waves calm to 1 foot.
.TUESDAY...Sunny. Highs around 57. East winds up to 10 mph. Waves
calm to 1 foot.
.TUESDAY NIGHT...Mostly clear. Lows 48 to 53. East winds 5 to 10 mph
becoming southeast late. Waves calm to 1 foot.
.WEDNESDAY...Sunny. Highs around 58. Southeast winds up to 10 mph
becoming east late. Waves calm to 1 foot.
.WEDNESDAY NIGHT...Mostly clear. Lows 49 to 54. Southeast winds
10 to 15 mph becoming south 5 to 15 mph late. Waves building to 1 to
2 feet.
.THURSDAY AND THURSDAY NIGHT...Mostly cloudy. Highs around 58. Lows
around 53.
.FRIDAY...Partly cloudy. Highs 59 to 64.
.FRIDAY NIGHT THROUGH SUNDAY NIGHT...Mostly cloudy. Lows around 53.
Highs 60 to 65.
.MONDAY...Partly cloudy. Highs 59 to 64.

&&

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

.TONIGHT...Mostly clear. Lows around 49. East winds up to 5 mph.
Waves calm to 1 foot.
.TUESDAY...Sunny. Highs around 56. East winds up to 10 mph. Waves
calm to 1 foot.
.TUESDAY NIGHT...Mostly clear. Lows around 51. East winds 5 to
10 mph becoming southeast late. Waves calm to 1 foot.
.WEDNESDAY...Sunny. Highs around 56. Southeast winds 5 to 15 mph.
Waves building to 1 to 2 feet.
.WEDNESDAY NIGHT...Mostly clear. Lows around 52. Southeast winds
10 to 15 mph becoming south 5 to 15 mph late. Waves 1 to 2 feet.
.THURSDAY AND THURSDAY NIGHT...Mostly cloudy. Highs around 57. Lows
around 53.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs around 57 at the
shore and 59 to 64 inland. Lows around 54.
.SATURDAY THROUGH SUNDAY NIGHT...Mostly cloudy. Highs 58 to 63. Lows
around 54.
.MONDAY...Partly cloudy. Highs 57 to 62.

&&

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

.TONIGHT...Mostly clear. Lows 48 to 53. East winds up to 5 mph.
Waves calm to 1 foot.
.TUESDAY...Sunny. Highs around 57. East winds up to 10 mph. Waves
calm to 1 foot.
.TUESDAY NIGHT...Mostly clear. Lows around 51. East winds 5 to
10 mph becoming southeast late. Waves calm to 1 foot.
.WEDNESDAY...Sunny. Highs around 58. Southeast winds 5 to 15 mph.
Waves calm to 1 foot.
.WEDNESDAY NIGHT...Mostly clear. Lows around 52. Southeast winds
10 to 15 mph becoming south 5 to 15 mph late. Waves building to 1 to
2 feet.
.THURSDAY AND THURSDAY NIGHT...Mostly cloudy. Highs around 58. Lows
around 54.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs 58 to 63. Lows
around 55.
.SATURDAY THROUGH SUNDAY NIGHT...Mostly cloudy. Highs 60 to 65. Lows
around 54.
.MONDAY...Partly cloudy. Highs 58 to 63.

&&

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

.TONIGHT...Mostly clear. Lows around 47. East winds up to 10 mph.
Waves calm to 1 foot.
.TUESDAY...Sunny. Highs 54 to 59. East winds up to 10 mph. Waves
calm to 1 foot.
.TUESDAY NIGHT...Mostly clear. Lows around 49. East winds 5 to
10 mph becoming southeast late. Waves building to 1 to 2 feet
subsiding to calm to 1 foot.
.WEDNESDAY...Sunny. Highs 54 to 59. Southeast winds up to 10 mph
becoming east late. Waves building to 1 to 2 feet.
.WEDNESDAY NIGHT...Mostly clear. Lows around 50. Southeast winds
10 to 15 mph becoming south 5 to 15 mph late. Waves 1 to 2 feet.
.THURSDAY AND THURSDAY NIGHT...Mostly cloudy. Highs 55 to 60. Lows
around 52.
.FRIDAY...Partly cloudy. Highs around 57 at the shore and 59 to
64 inland.
.FRIDAY NIGHT THROUGH SUNDAY NIGHT...Mostly cloudy. Lows around 53.
Highs around 58 at the shore and 60 to 65 inland.
.MONDAY...Partly cloudy. Highs around 57 at the shore and 59 to
64 inland.

&&


$$