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MIZ001-130800-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 PM EDT Sun Oct 12 2025

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

.TONIGHT...Mostly cloudy. A slight chance of rain showers by
midnight. Rain showers late, then a chance of rain showers late.
Lows around 53. South winds 15 to 20 mph. Waves 2 to 3 feet building
to 3 to 5 feet.
.COLUMBUS DAY...Breezy. A 20 percent chance of rain showers through
early afternoon. Sunny. Highs around 57. West winds 15 to 25 mph.
Waves 3 to 5 feet.
.MONDAY NIGHT...Partly cloudy. Lows around 40. Northwest winds 10 to
20 mph. Waves 2 to 4 feet.
.TUESDAY...Partly cloudy. Highs around 52. Northwest winds 10 to
20 mph decreasing to 5 to 10 mph by mid afternoon. Waves subsiding
to calm to 1 foot.
.TUESDAY NIGHT...Mostly cloudy through midnight then becoming partly
cloudy. Lows around 43. Northwest winds 5 to 10 mph becoming north
by midnight. Waves calm to 1 foot.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 53 to 58. Lows
around 47.
.THURSDAY...Partly sunny with a 50 percent chance of rain showers.
Highs 56 to 61.
.THURSDAY NIGHT...Rain showers likely. Lows around 51. Chance of
showers 70 percent.
.FRIDAY...Rain showers likely through early afternoon, then a chance
of rain showers by mid afternoon. Partly sunny. Highs 59 to 64.
Chance of showers 60 percent.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 50.
.SATURDAY...Partly sunny with a 30 percent chance of rain showers.
Highs 56 to 61.
.SATURDAY NIGHT...Mostly cloudy. Lows around 47.
.SUNDAY...A chance of rain showers by mid afternoon. Partly cloudy.
Highs around 52 at the shore and 55 to 60 inland. Chance of showers
30 percent.

&&

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

.TONIGHT...Breezy. Mostly cloudy. A slight chance of rain showers
early in the evening. A chance of rain showers by midnight, then
rain showers late. Lows around 53. South winds 15 to 25 mph. Waves
4 to 7 feet building to 5 to 8 feet.
.COLUMBUS DAY...A 20 percent chance of rain showers through early
afternoon. Sunny. Highs around 56. Southwest winds 15 to 20 mph
becoming west late. Waves subsiding to 2 to 3 feet.
.MONDAY NIGHT...Partly cloudy. Lows around 42. Northwest winds 15 to
20 mph. Waves 2 to 3 feet.
.TUESDAY...Partly cloudy. Highs around 50. Northwest winds 10 to
20 mph decreasing to 5 to 10 mph late. Waves subsiding to calm to
1 foot.
.TUESDAY NIGHT...Mostly cloudy through midnight then becoming partly
cloudy. Lows around 44. Northwest winds 5 to 10 mph. Waves calm to
1 foot.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 51 to 56. Lows
around 47.
.THURSDAY...Partly cloudy through early afternoon, then mostly
cloudy with a chance of rain showers by mid afternoon. Highs 54 to
59. Chance of showers 40 percent.
.THURSDAY NIGHT...Rain showers likely. Lows around 50. Chance of
showers 60 percent.
.FRIDAY...Rain showers likely. Highs 56 to 61. Chance of showers
60 percent.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 50.
.SATURDAY AND SATURDAY NIGHT...A 30 percent chance of rain showers.
Mostly cloudy. Highs 54 to 59. Lows around 47.
.SUNDAY...Partly sunny with a 30 percent chance of rain showers.
Highs 51 to 56.

&&

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

.TONIGHT...Breezy. Mostly cloudy. A slight chance of rain showers
early in the evening. A chance of rain showers by midnight, then
rain showers late. Lows around 53. South winds 15 to 25 mph. Waves
3 to 6 feet building to 4 to 7 feet.
.COLUMBUS DAY...A 20 percent chance of rain showers through early
afternoon. Sunny. Highs around 57. Southwest winds 15 to 20 mph
becoming west late. Waves subsiding to 2 to 4 feet.
.MONDAY NIGHT...Partly cloudy. Lows around 41. Northwest winds 15 to
20 mph. Waves 2 to 4 feet.
.TUESDAY...Partly cloudy. Highs around 51. Northwest winds 10 to
20 mph decreasing to 5 to 10 mph late. Waves subsiding to calm to
1 foot.
.TUESDAY NIGHT...Mostly cloudy through midnight then becoming partly
cloudy. Lows around 44. North winds 5 to 15 mph. Waves calm to
1 foot.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs around 53 at
the shore and 55 to 60 inland. Lows around 47.
.THURSDAY...Partly cloudy through early afternoon, then mostly
cloudy with a chance of rain showers by mid afternoon. Highs 56 to
61. Chance of showers 40 percent.
.THURSDAY NIGHT...Rain showers likely. Lows around 51. Chance of
showers 60 percent.
.FRIDAY...Rain showers likely through early afternoon, then a chance
of rain showers by mid afternoon. Mostly cloudy. Highs around 58 at
the shore and 60 to 65 inland. Chance of showers 60 percent.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 50.
.SATURDAY...Partly sunny with a 30 percent chance of rain showers.
Highs around 56 at the shore and 58 to 63 inland.
.SATURDAY NIGHT...Mostly cloudy. Lows around 47.
.SUNDAY...A chance of rain showers by mid afternoon. Partly sunny.
Highs around 53 at the shore and 56 to 61 inland. Chance of showers
30 percent.

&&

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

.TONIGHT...Mostly cloudy. A chance of rain showers by midnight. Rain
showers late, then a chance of rain showers late. Lows around 53.
Southeast winds 15 to 20 mph becoming south late. Waves 2 to 4 feet
building to 3 to 6 feet.
.COLUMBUS DAY...A 20 percent chance of rain showers through early
afternoon. Sunny. Highs around 56. West winds 10 to 20 mph. Waves
3 to 6 feet.
.MONDAY NIGHT...Partly cloudy. Lows around 41. Northwest winds 10 to
15 mph. Waves subsiding to calm to 1 foot.
.TUESDAY...Partly cloudy. Highs around 51. Northwest winds 10 to
20 mph decreasing to 5 to 10 mph by mid afternoon. Waves calm to
1 foot.
.TUESDAY NIGHT...Mostly cloudy through midnight then becoming partly
cloudy. Lows around 43. Northwest winds 5 to 10 mph becoming north
late. Waves calm to 1 foot.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 52 to 57. Lows
around 46.
.THURSDAY...A chance of rain showers by mid afternoon. Partly sunny.
Highs 55 to 60. Chance of showers 50 percent.
.THURSDAY NIGHT...Rain showers likely. Lows around 51. Chance of
showers 70 percent.
.FRIDAY...Rain showers likely through early afternoon, then a chance
of rain showers by mid afternoon. Partly sunny. Highs around 57 at
the shore and 59 to 64 inland. Chance of showers 60 percent.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 50.
.SATURDAY THROUGH SUNDAY...Mostly cloudy with a 30 percent chance of
rain showers. Highs around 52 at the shore and 56 to 61 inland. Lows
around 47.

&&


$$