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MIZ001-302000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Sat Aug 30 2025

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

.TODAY...Sunny. Highs around 61 at the shore and 68 to 73 inland.
Southwest winds 5 to 15 mph. Waves calm to 1 foot building to 2 to
3 feet, then subsiding to 1 to 2 feet.
.TONIGHT...Partly cloudy. Lows around 60. Southwest winds 5 to
15 mph becoming west 5 to 10 mph late. Waves subsiding to calm to
1 foot.
.SUNDAY...Sunny. Highs around 67 at the shore and 71 to 76 inland.
Southwest winds 5 to 10 mph. Waves calm to 1 foot.
.SUNDAY NIGHT...A 20 percent chance of showers and thunderstorms
late. Partly cloudy. Lows around 60. Southwest winds 5 to 10 mph.
Waves calm to 1 foot.
.LABOR DAY...Sunny. Highs 69 to 74. Southwest winds 5 to 15 mph.
Waves calm to 1 foot.
.MONDAY NIGHT...Partly cloudy. Lows around 60.
.TUESDAY...A chance of showers through early afternoon, then showers
likely by mid afternoon. Partly sunny. Highs around 68. Chance of
showers 60 percent.
.TUESDAY NIGHT...Rain showers likely and a chance of thunderstorms
through midnight, then a chance of rain showers late. Cloudy. Lows
around 49. Chance of precipitation 60 percent.
.WEDNESDAY...Breezy, cool. A chance of rain showers through early
afternoon. Mostly cloudy. Highs around 53. Chance of showers
30 percent.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. Lows around 45. Highs
around 55.
.THURSDAY NIGHT AND FRIDAY...A 30 percent chance of rain showers.
Mostly cloudy. Lows around 49. Highs around 59.

&&

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

.TODAY...Sunny. Highs around 62 at the shore and 66 to 71 inland.
Southwest winds 5 to 15 mph. Waves calm to 1 foot building to 1 to
2 feet.
.TONIGHT...Partly cloudy. Lows around 58. Southwest winds 5 to
15 mph becoming west 5 to 10 mph late. Waves subsiding to calm to
1 foot.
.SUNDAY...Sunny. Highs 67 to 72. West winds 5 to 10 mph becoming
southwest by late morning. Waves calm to 1 foot.
.SUNDAY NIGHT...Partly cloudy. Lows around 60. Southwest winds 5 to
10 mph. Waves calm to 1 foot.
.LABOR DAY...Sunny. Highs 66 to 71. Southwest winds 5 to 10 mph.
Waves calm to 1 foot.
.MONDAY NIGHT...Partly cloudy. Lows around 60.
.TUESDAY...Partly cloudy through early afternoon, then mostly cloudy
with showers likely by mid afternoon. Highs around 67. Chance of
showers 60 percent.
.TUESDAY NIGHT...Rain showers likely and a chance of thunderstorms
through midnight, then a chance of rain showers late. Cloudy. Lows
around 49. Chance of precipitation 60 percent.
.WEDNESDAY...Breezy, cool. A chance of rain showers through early
afternoon. Mostly cloudy. Highs around 52. Chance of showers
30 percent.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. Lows around 45. Highs
around 54.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. Lows around 49. Highs
around 58.

&&

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

.TODAY...Warmer, sunny. Highs around 62 at the shore and 69 to
74 inland. Southwest winds 5 to 15 mph. Waves calm to 1 foot
building to 1 to 2 feet.
.TONIGHT...Partly cloudy. Lows around 59. Southwest winds 5 to
15 mph. Waves subsiding to calm to 1 foot.
.SUNDAY...Sunny. Highs around 66 at the shore and 70 to 75 inland.
West winds 5 to 10 mph becoming southwest by late morning. Waves
calm to 1 foot.
.SUNDAY NIGHT...Partly cloudy. Lows around 60. Southwest winds 5 to
10 mph. Waves calm to 1 foot.
.LABOR DAY...Sunny. Highs 68 to 73. Southwest winds 5 to 10 mph.
Waves calm to 1 foot.
.MONDAY NIGHT...Partly cloudy. Lows around 60.
.TUESDAY...Partly cloudy with a chance of showers through early
afternoon, then mostly cloudy with showers likely by mid afternoon.
Highs around 67. Chance of showers 60 percent.
.TUESDAY NIGHT...Rain showers likely and a chance of thunderstorms
through midnight, then a chance of rain showers late. Cloudy. Lows
around 49. Chance of precipitation 60 percent.
.WEDNESDAY...Breezy, cool. A chance of rain showers through early
afternoon. Mostly cloudy. Highs around 52. Chance of showers
30 percent.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. Lows around 46. Highs
around 54.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. Lows around 49. Highs
around 58.

&&

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

.TODAY...Sunny. Highs around 62 at the shore and 68 to 73 inland.
Southwest winds 5 to 15 mph. Waves calm to 1 foot building to 1 to
2 feet.
.TONIGHT...Partly cloudy. Lows around 58. Southwest winds 5 to
15 mph becoming west 5 to 10 mph late. Waves subsiding to calm to
1 foot.
.SUNDAY...Sunny. Highs around 69 at the shore and 71 to 76 inland.
West winds 5 to 10 mph becoming southwest by late morning. Waves
calm to 1 foot.
.SUNDAY NIGHT...Partly cloudy. Lows around 60. Southwest winds 5 to
10 mph. Waves calm to 1 foot.
.LABOR DAY...Sunny. Highs 68 to 73. Southwest winds 5 to 10 mph.
Waves calm to 1 foot.
.MONDAY NIGHT...Partly cloudy. Lows around 60.
.TUESDAY...A chance of showers through early afternoon, then showers
likely by mid afternoon. Partly sunny. Highs around 68. Chance of
showers 60 percent.
.TUESDAY NIGHT...Rain showers likely and a chance of thunderstorms
through midnight, then a chance of rain showers late. Cloudy. Lows
around 49. Chance of precipitation 60 percent.
.WEDNESDAY...Breezy, cool. A chance of rain showers through early
afternoon. Mostly cloudy. Highs around 53. Chance of showers
30 percent.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. Lows around 45. Highs
around 55.
.THURSDAY NIGHT AND FRIDAY...A 30 percent chance of rain showers.
Mostly cloudy. Lows around 49. Highs around 58.

&&


$$