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MIZ001-190800-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 PM EDT Fri Jul 18 2025

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

.TONIGHT...Mostly cloudy with a 40 percent chance of rain showers.
Patchy fog late. Lows around 55. Southwest winds 5 to 10 mph
becoming west late. Waves calm to 1 foot.
.SATURDAY...Partly cloudy. Patchy fog through early afternoon. Highs
around 66 at the shore and 71 to 76 inland. West winds up to 5 mph
becoming southwest by mid afternoon. Waves calm to 1 foot.
.SATURDAY NIGHT...Partly cloudy. Areas of smoke. Lows around 56.
West winds 5 to 10 mph becoming northwest late. Waves calm to
1 foot.
.SUNDAY...Sunny through early afternoon then becoming partly cloudy.
Areas of smoke through early afternoon. Highs around 65 at the shore
and 73 to 78 inland. North winds 5 to 10 mph becoming east by late
morning, then becoming south by mid afternoon. Waves calm to 1 foot.
.SUNDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 56. South winds 5 to 10 mph becoming southeast
late. Waves calm to 1 foot.
.MONDAY...Partly sunny. Highs around 64 at the shore and 73 to
78 inland.
.MONDAY NIGHT...A chance of rain showers through midnight, then a
chance of rain showers and thunderstorms late. Mostly cloudy. Lows
56 to 61. Chance of precipitation 40 percent.
.TUESDAY...Partly sunny with a 30 percent chance of rain showers and
thunderstorms. Highs around 65 at the shore and 74 to 79 inland.
.TUESDAY NIGHT...Mostly cloudy with a chance of rain showers. Lows
57 to 62. Chance of showers 40 percent.
.WEDNESDAY...A chance of rain showers through early afternoon.
Partly sunny. Highs around 67 at the shore and 76 to 81 inland.
Chance of showers 30 percent.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 58.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs around 67 at the
shore and 75 to 80 inland. Lows around 58.

&&

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

.TONIGHT...Mostly cloudy with a 20 percent chance of rain showers.
Patchy fog late. Lows 51 to 56. Southwest winds 5 to 10 mph. Waves
calm to 1 foot.
.SATURDAY...Partly cloudy. Patchy fog through early afternoon. Highs
around 58 at the shore and 66 to 71 inland. West winds up to 5 mph
becoming southwest by mid afternoon. Waves calm to 1 foot.
.SATURDAY NIGHT...Partly cloudy. Areas of smoke. Lows 51 to 56. West
winds 5 to 10 mph becoming northwest late. Waves calm to 1 foot.
.SUNDAY...Sunny through early afternoon then becoming partly cloudy.
Areas of smoke through early afternoon. Highs around 58 at the shore
and 69 to 74 inland. North winds 5 to 10 mph becoming northeast by
late morning, then becoming southwest by mid afternoon. Waves calm
to 1 foot.
.SUNDAY NIGHT...Mostly cloudy. Lows 51 to 56. Southwest winds up to
10 mph becoming southeast late. Waves calm to 1 foot.
.MONDAY...Partly sunny. Highs around 56 at the shore and 67 to
72 inland.
.MONDAY NIGHT AND TUESDAY...A 30 percent chance of rain showers and
thunderstorms. Mostly cloudy. Lows 52 to 57. Highs around 59 at the
shore and 69 to 74 inland.
.TUESDAY NIGHT...Mostly cloudy with a chance of rain showers. Lows
55 to 60 inland and around 53 at the shore. Chance of showers
40 percent.
.WEDNESDAY...A chance of rain showers through early afternoon.
Partly sunny. Highs around 60 at the shore and 71 to 76 inland.
Chance of showers 30 percent.
.WEDNESDAY NIGHT...Mostly cloudy. Lows 52 to 57.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs around 59 at the
shore and 70 to 75 inland. Lows 52 to 57.

&&

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

.TONIGHT...Mostly cloudy with a 20 percent chance of rain showers.
Patchy fog late. Lows 52 to 57. Southwest winds 5 to 10 mph. Waves
calm to 1 foot.
.SATURDAY...Partly cloudy. Patchy fog through early afternoon. Highs
around 61 at the shore and 69 to 74 inland. West winds 5 to 10 mph
becoming southwest by mid afternoon. Waves calm to 1 foot.
.SATURDAY NIGHT...Partly cloudy. Areas of smoke. Lows 52 to 57. West
winds 5 to 10 mph becoming northwest late. Waves calm to 1 foot.
.SUNDAY...Sunny. Areas of smoke through early afternoon. Highs
around 61 at the shore and 73 to 78 inland. North winds 5 to 10 mph
becoming northeast by late morning, then becoming south by mid
afternoon. Waves calm to 1 foot.
.SUNDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows 52 to 57. Southwest winds 5 to 10 mph becoming
southeast late. Waves calm to 1 foot.
.MONDAY...Partly sunny. Highs around 58 at the shore and 71 to
76 inland.
.MONDAY NIGHT AND TUESDAY...A 30 percent chance of rain showers and
thunderstorms. Mostly cloudy. Lows 55 to 60 inland and around 50 at
the shore. Highs around 61 at the shore and 72 to 77 inland.
.TUESDAY NIGHT...Mostly cloudy with a chance of rain showers. Lows
56 to 61 inland and around 52 at the shore. Chance of showers
40 percent.
.WEDNESDAY...A chance of rain showers through early afternoon.
Partly sunny. Highs around 62 at the shore and 73 to 78 inland.
Chance of showers 30 percent.
.WEDNESDAY NIGHT...Mostly cloudy. Lows 53 to 58.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs around 62 at the
shore and 73 to 78 inland. Lows 53 to 58.

&&

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

.TONIGHT...Mostly cloudy with a 40 percent chance of rain showers.
Patchy fog late. Lows around 54. Southwest winds 5 to 10 mph
becoming west late. Waves calm to 1 foot.
.SATURDAY...Partly cloudy. Patchy fog through early afternoon. Highs
around 63 at the shore and 70 to 75 inland. Northwest winds up to
5 mph becoming southwest by mid afternoon. Waves calm to 1 foot.
.SATURDAY NIGHT...Partly cloudy. Areas of smoke. Lows around 55.
West winds up to 10 mph becoming northwest late. Waves calm to
1 foot.
.SUNDAY...Sunny through early afternoon then becoming partly cloudy.
Areas of smoke through early afternoon. Highs around 62 at the shore
and 73 to 78 inland. North winds 5 to 10 mph becoming east by late
morning, then becoming south by mid afternoon. Waves calm to 1 foot.
.SUNDAY NIGHT...Mostly cloudy. Lows 53 to 58. South winds up to
5 mph becoming southeast late. Waves calm to 1 foot.
.MONDAY...Partly sunny. Highs around 62 at the shore and 73 to
78 inland.
.MONDAY NIGHT...A chance of rain showers through midnight, then a
chance of rain showers and thunderstorms late. Mostly cloudy. Lows
55 to 60. Chance of precipitation 40 percent.
.TUESDAY...A chance of rain showers and thunderstorms through early
afternoon. Partly sunny. Highs around 64 at the shore and 74 to
79 inland. Chance of precipitation 30 percent.
.TUESDAY NIGHT...Mostly cloudy with a chance of rain showers. Lows
56 to 61. Chance of showers 40 percent.
.WEDNESDAY...A chance of rain showers through early afternoon.
Partly sunny. Highs around 65 at the shore and 76 to 81 inland.
Chance of showers 30 percent.
.WEDNESDAY NIGHT...Mostly cloudy. Lows 56 to 61.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs around 65 at the
shore and 76 to 81 inland. Lows 55 to 60.

&&


$$