497
SXUS43 KMQT 180901
RECMQT

MIZ001-182000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Mon Aug 18 2025

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

.TODAY...Cloudy. A slight chance of thunderstorms through early
afternoon. Rain showers likely. A chance of thunderstorms by mid
afternoon. Highs around 65. Southeast winds 10 to 15 mph. Waves 1 to
2 feet.
.TONIGHT...A 40 percent chance of showers through midnight. Cloudy.
Lows around 61. Southeast winds 5 to 15 mph becoming north 5 to
10 mph late. Waves subsiding to calm to 1 foot.
.TUESDAY...Partly sunny. Highs 66 to 71. North winds 5 to 15 mph.
Waves building to 1 to 2 feet subsiding to calm to 1 foot.
.TUESDAY NIGHT...Partly cloudy. Lows around 58. North winds 5 to
10 mph becoming northwest late. Waves calm to 1 foot.
.WEDNESDAY...Sunny. Highs 68 to 73. North winds up to 5 mph becoming
northwest by late morning, then becoming south by mid afternoon.
Waves calm to 1 foot.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows around 60. Highs
around 73.
.THURSDAY NIGHT...A chance of showers late. Mostly cloudy. Lows
around 63. Chance of showers 30 percent.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs around 74. Lows
around 58.
.SATURDAY...Partly cloudy. Highs around 66.
.SATURDAY NIGHT...Partly cloudy through midnight then becoming
mostly cloudy. Lows around 54.
.SUNDAY...Partly cloudy. Highs around 64.

&&

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

.TODAY...Rain showers likely. A chance of thunderstorms by mid
afternoon. Highs around 63. Southeast winds 10 to 20 mph. Waves 2 to
3 feet building to 3 to 5 feet.
.TONIGHT...A chance of rain showers through midnight, then a slight
chance of rain showers late. Cloudy. Lows around 59. Southeast winds
5 to 15 mph becoming east late. Chance of showers 40 percent. Waves
subsiding to 2 to 3 feet.
.TUESDAY...Mostly cloudy through early afternoon then becoming
partly cloudy. Highs around 66. North winds 5 to 15 mph. Waves
subsiding to 1 to 2 feet.
.TUESDAY NIGHT...Partly cloudy. Lows around 58. North winds up to
10 mph. Waves subsiding to calm to 1 foot.
.WEDNESDAY...Sunny. Highs 66 to 71. North winds up to 5 mph becoming
south by mid afternoon. Waves calm to 1 foot.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows around 61. Highs
around 70.
.THURSDAY NIGHT...A chance of showers late. Mostly cloudy. Lows
around 63. Chance of showers 30 percent.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs around 72. Lows
around 59.
.SATURDAY...Partly cloudy. Highs around 64.
.SATURDAY NIGHT...Mostly cloudy. Lows around 55.
.SUNDAY...Partly cloudy. Highs around 63.

&&

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

.TODAY...Rain showers likely. A chance of thunderstorms by mid
afternoon. Highs around 64. Southeast winds 10 to 20 mph. Waves 1 to
2 feet building to 3 to 5 feet.
.TONIGHT...A chance of showers through midnight, then a slight
chance of showers late. Cloudy. Lows around 60. Southeast winds 5 to
15 mph becoming east late. Chance of showers 40 percent. Waves
subsiding to 2 to 3 feet.
.TUESDAY...Partly sunny through early afternoon then becoming mostly
sunny. Highs around 66. North winds 5 to 15 mph. Waves subsiding to
1 to 2 feet.
.TUESDAY NIGHT...Partly cloudy. Lows around 58. North winds 5 to
10 mph becoming northwest late. Waves subsiding to calm to 1 foot.
.WEDNESDAY...Sunny. Highs 67 to 72. North winds up to 5 mph becoming
northwest by late morning, then becoming south by mid afternoon.
Waves calm to 1 foot.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows around 60. Highs
around 72.
.THURSDAY NIGHT...A chance of showers late. Mostly cloudy. Lows
around 63. Chance of showers 30 percent.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs around 73. Lows
around 58.
.SATURDAY...Cooler. Partly cloudy. Highs around 64.
.SATURDAY NIGHT...Mostly cloudy. Lows around 54.
.SUNDAY...Mostly sunny. Highs around 63.

&&

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

.TODAY...A slight chance of thunderstorms through early afternoon.
Rain showers likely. A chance of thunderstorms by mid afternoon.
Highs around 64. Southeast winds 10 to 15 mph. Waves 2 to 3 feet.
.TONIGHT...A chance of rain showers and a slight chance of
thunderstorms through midnight. Cloudy. Lows around 60. Southeast
winds 5 to 15 mph becoming northeast 5 to 10 mph late. Chance of
precipitation 40 percent. Waves subsiding to 1 to 2 feet.
.TUESDAY...Mostly cloudy through early afternoon then becoming
partly cloudy. Highs 66 to 71. North winds 5 to 15 mph. Waves
subsiding to calm to 1 foot.
.TUESDAY NIGHT...Partly cloudy. Lows around 58. Northwest winds up
to 5 mph. Waves calm to 1 foot.
.WEDNESDAY...Sunny. Highs 68 to 73. North winds up to 5 mph becoming
northwest by late morning, then becoming south by mid afternoon.
Waves calm to 1 foot.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows around 60. Highs
70 to 75.
.THURSDAY NIGHT...A chance of showers late. Mostly cloudy. Lows
around 63. Chance of showers 30 percent.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs around 74. Lows
around 59.
.SATURDAY...Cooler. Partly cloudy. Highs around 65.
.SATURDAY NIGHT...Mostly cloudy. Lows around 55.
.SUNDAY...Partly cloudy. Highs around 64.

&&


$$