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MIZ001-192000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Wed Aug 19 2026

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

.TODAY...Sunny. Highs 66 to 71. Northwest winds 5 to 10 mph becoming
southwest 5 to 15 mph by mid afternoon. Waves calm to 1 foot.
.TONIGHT...Partly cloudy. Lows around 55. South winds 5 to 10 mph
becoming east late. Waves calm to 1 foot.
.THURSDAY...A slight chance of rain showers through early afternoon,
then a chance of rain showers by mid afternoon. Partly cloudy. Highs
around 67 at the shore and 69 to 74 inland. Northeast winds up to
5 mph becoming southeast by mid afternoon. Chance of showers
40 percent. Waves calm to 1 foot.
.THURSDAY NIGHT...A 40 percent chance of rain showers through
midnight. Mostly cloudy. Lows around 57. Southeast winds 5 to 10 mph
becoming east late. Waves calm to 1 foot.
.FRIDAY...Partly cloudy. Highs around 67 at the shore and 69 to
74 inland. Northeast winds up to 10 mph. Waves calm to 1 foot.
.FRIDAY NIGHT...Mostly cloudy. Lows around 58.
.SATURDAY THROUGH SUNDAY...Mostly clear. Highs around 65 at the
shore and 74 to 79 inland. Lows around 57.
.SUNDAY NIGHT...Partly cloudy. Lows around 58.
.MONDAY...Partly sunny. Highs around 65 at the shore and 74 to
79 inland.
.MONDAY NIGHT...A chance of rain showers. Mostly cloudy. Lows around
60. Chance of showers 40 percent.
.TUESDAY...Partly sunny with a 30 percent chance of rain showers.
Highs around 66 at the shore and 75 to 80 inland.

&&

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

.TODAY...Sunny. Highs 61 to 66. Northwest winds 5 to 10 mph becoming
south by mid afternoon. Waves calm to 1 foot.
.TONIGHT...Partly cloudy. Lows around 54. South winds up to 10 mph
becoming northeast late. Waves calm to 1 foot.
.THURSDAY...Patchy fog through early afternoon. A 20 percent chance
of rain showers. Mostly sunny through early afternoon then becoming
partly sunny. Highs around 63 at the shore and 66 to 71 inland. East
winds up to 5 mph becoming southeast by late morning. Waves calm to
1 foot.
.THURSDAY NIGHT...A 30 percent chance of rain showers through
midnight. Mostly cloudy. Lows around 56. Southeast winds 5 to 10 mph
becoming east late. Waves calm to 1 foot.
.FRIDAY...Partly cloudy. Highs 63 to 68. East winds up to 10 mph
becoming southeast late. Waves calm to 1 foot.
.FRIDAY NIGHT...Mostly cloudy. Lows around 57.
.SATURDAY AND SATURDAY NIGHT...Partly cloudy. Highs around 65 at the
shore and 70 to 75 inland. Lows 54 to 59.
.SUNDAY...Sunny. Highs around 60 at the shore and 71 to 76 inland.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows 55 to 60. Highs
around 61 at the shore and 72 to 77 inland.
.MONDAY NIGHT...Mostly cloudy with a 40 percent chance of rain
showers. Lows 56 to 61.
.TUESDAY...A chance of rain showers through early afternoon. Partly
sunny. Highs around 61 at the shore and 73 to 78 inland. Chance of
showers 30 percent.

&&

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

.TODAY...Sunny. Highs 65 to 70. Northwest winds 5 to 10 mph becoming
southwest by mid afternoon. Waves calm to 1 foot.
.TONIGHT...Mostly clear. Lows around 55. South winds up to 10 mph
becoming east late. Waves calm to 1 foot.
.THURSDAY...Partly cloudy with a 20 percent chance of rain showers.
Highs around 65 at the shore and 69 to 74 inland. East winds up to
5 mph becoming southeast by late morning. Waves calm to 1 foot.
.THURSDAY NIGHT...A 20 percent chance of rain showers through
midnight. Mostly cloudy. Lows around 57. Southeast winds 5 to 10 mph
becoming east late. Waves calm to 1 foot.
.FRIDAY...Partly cloudy. Highs around 65 at the shore and 67 to
72 inland. Northeast winds 5 to 10 mph becoming southeast late.
Waves calm to 1 foot.
.FRIDAY NIGHT...Mostly cloudy. Lows around 58.
.SATURDAY...Mostly sunny. Highs around 67 at the shore and 72 to
77 inland.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 55 to 60. Highs
around 64 at the shore and 73 to 78 inland.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows 56 to 61. Highs
around 64 at the shore and 74 to 79 inland.
.MONDAY NIGHT...Mostly cloudy with a 40 percent chance of rain
showers. Lows 58 to 63.
.TUESDAY...A chance of rain showers through early afternoon. Partly
sunny. Highs around 65 at the shore and 75 to 80 inland. Chance of
showers 30 percent.

&&

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

.TODAY...Sunny. Highs around 62 at the shore and 65 to 70 inland.
Northwest winds 5 to 10 mph becoming south by mid afternoon. Waves
calm to 1 foot.
.TONIGHT...Partly cloudy. Patchy fog late. Lows around 54. South
winds 5 to 10 mph becoming northeast late. Waves calm to 1 foot.
.THURSDAY...A slight chance of rain showers through early afternoon,
then a chance of rain showers by mid afternoon. Partly sunny. Highs
around 63 at the shore and 68 to 73 inland. Northeast winds up to
5 mph becoming southeast by late morning. Chance of showers
40 percent. Waves calm to 1 foot.
.THURSDAY NIGHT...A 40 percent chance of rain showers through
midnight. Mostly cloudy. Lows around 57. East winds 5 to 10 mph.
Waves calm to 1 foot.
.FRIDAY...Partly cloudy. Highs around 63 at the shore and 67 to
72 inland. Northeast winds up to 10 mph. Waves calm to 1 foot.
.FRIDAY NIGHT...Mostly cloudy. Lows around 57.
.SATURDAY...Sunny. Highs around 65 at the shore and 70 to 75 inland.
.SATURDAY NIGHT...Partly cloudy. Lows 54 to 59.
.SUNDAY...Sunny. Highs around 62 at the shore and 73 to 78 inland.
.SUNDAY NIGHT...Partly cloudy. Lows 54 to 59.
.MONDAY...Partly sunny. Highs around 63 at the shore and 73 to
78 inland.
.MONDAY NIGHT...A chance of rain showers. Mostly cloudy. Lows 56 to
61. Chance of showers 40 percent.
.TUESDAY...Partly sunny with a 30 percent chance of rain showers.
Highs around 63 at the shore and 75 to 80 inland.

&&


$$