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MIZ001-152000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Wed Oct 15 2025

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

.TODAY...Partly cloudy through early afternoon then clearing. Highs
around 55. West winds up to 10 mph becoming southwest by mid
afternoon. Waves calm to 1 foot.
.TONIGHT...Mostly clear. Lows around 48. Southwest winds up to
10 mph becoming south late. Waves calm to 1 foot.
.THURSDAY...Light rain likely by mid afternoon. Mostly cloudy. Highs
around 58. Southeast winds 5 to 15 mph. Chance of rain 70 percent.
Waves building to 1 to 2 feet.
.THURSDAY NIGHT...Light rain through midnight, then light rain
likely late. Lows around 52. South winds 10 to 15 mph becoming 10 to
20 mph late. Chance of rain 90 percent. Waves building to 2 to
3 feet.
.FRIDAY...Mostly cloudy with a 40 percent chance of rain showers.
Highs around 60 at the shore and 62 to 67 inland. South winds 10 to
20 mph. Waves building to 3 to 5 feet.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 52.
.SATURDAY...Partly cloudy. Highs around 56 at the shore and 58 to
63 inland.
.SATURDAY NIGHT...Mostly cloudy. Lows around 45.
.SUNDAY...Partly cloudy. Highs around 54.
.SUNDAY NIGHT...Mostly cloudy. Lows around 45.
.MONDAY...Partly cloudy. Highs around 51 at the shore and 53 to
58 inland.
.MONDAY NIGHT...Partly cloudy through midnight, then mostly cloudy
with a chance of rain showers late. Lows around 45. Chance of
showers 30 percent.
.TUESDAY...Partly sunny with a 40 percent chance of rain showers.
Highs 52 to 57.

&&

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

.TODAY...Partly sunny early then clearing. Highs 51 to 56. West
winds up to 10 mph. Waves calm to 1 foot.
.TONIGHT...Mostly clear. Lows around 48. Southwest winds up to
10 mph becoming south late. Waves calm to 1 foot.
.THURSDAY...Partly sunny through early afternoon, then cloudy with
light rain likely by mid afternoon. Highs 53 to 58. Southeast winds
5 to 15 mph. Chance of rain 60 percent. Waves building to 2 to
3 feet.
.THURSDAY NIGHT...Light rain. Lows around 52. South winds 10 to
15 mph becoming 10 to 20 mph late. Chance of rain 90 percent. Waves
building to 2 to 4 feet.
.FRIDAY...Mostly cloudy with a 40 percent chance of rain showers.
Highs 58 to 63. South winds 10 to 20 mph. Waves 2 to 4 feet.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 52.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. Highs 54 to 59. Lows
around 45.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy. Highs 50 to 55. Lows
around 45.
.MONDAY...Partly cloudy. Highs 49 to 54.
.MONDAY NIGHT...Partly cloudy through midnight, then mostly cloudy
with a chance of rain showers late. Lows around 45. Chance of
showers 30 percent.
.TUESDAY...Partly sunny with a 40 percent chance of rain showers.
Highs 50 to 55.

&&

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

.TODAY...Partly sunny early then clearing. Highs 53 to 58. West
winds up to 10 mph. Waves calm to 1 foot.
.TONIGHT...Mostly clear. Lows around 48. Southwest winds 5 to 10 mph
becoming south late. Waves calm to 1 foot.
.THURSDAY...Light rain likely by mid afternoon. Partly sunny. Highs
55 to 60. Southeast winds 5 to 15 mph. Chance of rain 60 percent.
Waves building to 2 to 3 feet.
.THURSDAY NIGHT...Light rain. Lows around 51. South winds 10 to
15 mph. Chance of rain 90 percent. Waves 2 to 3 feet.
.FRIDAY...Warmer. Mostly cloudy with a 40 percent chance of rain
showers. Highs around 60 at the shore and 63 to 68 inland. South
winds 10 to 20 mph. Waves 2 to 3 feet.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 52.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. Highs 57 to 62. Lows
around 45.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy. Highs 51 to 56. Lows
around 45.
.MONDAY...Partly cloudy. Highs around 51 at the shore and 53 to
58 inland.
.MONDAY NIGHT...Partly cloudy through midnight, then mostly cloudy
with a chance of rain showers late. Lows around 45. Chance of
showers 30 percent.
.TUESDAY...Partly sunny with a 40 percent chance of rain showers.
Highs around 51 at the shore and 53 to 58 inland.

&&

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

.TODAY...Partly sunny through early afternoon then clearing. Highs
52 to 57. West winds up to 10 mph becoming southwest by mid
afternoon. Waves calm to 1 foot.
.TONIGHT...Mostly clear. Lows around 47. Southwest winds up to 5 mph
becoming south late. Waves calm to 1 foot.
.THURSDAY...Partly sunny through early afternoon, then cloudy with
light rain likely by mid afternoon. Highs 54 to 59. Southeast winds
5 to 15 mph. Chance of rain 60 percent. Waves building to 1 to
2 feet.
.THURSDAY NIGHT...Light rain through midnight, then light rain
likely late. Lows around 51. Southeast winds 5 to 15 mph becoming
south late. Chance of rain 90 percent. Waves building to 2 to
4 feet.
.FRIDAY...Warmer. Mostly cloudy with a 40 percent chance of rain
showers. Highs 60 to 65. South winds 10 to 20 mph. Waves building to
3 to 5 feet.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 51.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. Highs around 55 at the
shore and 57 to 62 inland. Lows around 45.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy. Highs 50 to 55. Lows
around 44.
.MONDAY...Partly cloudy. Highs around 50 at the shore and 52 to
57 inland.
.MONDAY NIGHT...Partly cloudy through midnight, then mostly cloudy
with a chance of rain showers late. Lows around 45. Chance of
showers 30 percent.
.TUESDAY...Partly sunny with a 40 percent chance of rain showers.
Highs 50 to 55.

&&


$$