931
SXUS43 KMQT 180902
RECMQT

MIZ001-182000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Tue Aug 18 2026

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

.TODAY...Mostly sunny. Highs around 67 at the shore and 71 to
76 inland. Northwest winds 5 to 15 mph becoming southwest by mid
afternoon. Waves 1 to 2 feet subsiding to calm to 1 foot, then
building to 2 to 3 feet.
.TONIGHT...Mostly clear. Lows 57 to 62. West winds 5 to 15 mph
becoming northwest 5 to 10 mph late. Waves subsiding to calm to
1 foot.
.WEDNESDAY...Sunny. Highs around 67 at the shore and 69 to
74 inland. Northwest winds 5 to 10 mph becoming southwest 5 to
15 mph by mid afternoon. Waves building to 1 to 2 feet.
.WEDNESDAY NIGHT...Partly cloudy. Lows 57 to 62. Southwest winds
5 to 10 mph becoming north late. Waves subsiding to calm to 1 foot.
.THURSDAY...Partly cloudy. Highs around 66 at the shore and 69 to
74 inland. Northeast winds up to 5 mph becoming south by mid
afternoon. Waves calm to 1 foot.
.THURSDAY NIGHT...Mostly cloudy with a 40 percent chance of rain
showers. Lows 61 to 66 inland and around 57 at the shore.
.FRIDAY...A 30 percent chance of rain showers by mid afternoon.
Partly cloudy. Highs around 68 at the shore and 71 to 76 inland.
.FRIDAY NIGHT THROUGH SATURDAY NIGHT...Partly cloudy. Lows around
59. Highs 69 to 74.
.SUNDAY THROUGH MONDAY...Partly cloudy. Highs around 64 at the shore
and 67 to 72 inland. Lows around 58.

&&

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

.TODAY...Sunny through mid afternoon then becoming partly cloudy.
Highs around 65 at the shore and 67 to 72 inland. Northwest winds
5 to 15 mph becoming west by mid afternoon. Waves 1 to 2 feet
subsiding to calm to 1 foot, then building to 1 to 2 feet.
.TONIGHT...Mostly clear. Lows 55 to 60. West winds 5 to 15 mph
becoming northwest 5 to 10 mph late. Waves subsiding to calm to
1 foot.
.WEDNESDAY...Mostly sunny. Highs around 63 at the shore and 65 to
70 inland. Northwest winds 5 to 10 mph becoming southwest by mid
afternoon. Waves calm to 1 foot.
.WEDNESDAY NIGHT...Partly cloudy. Lows 55 to 60. Southwest winds
5 to 10 mph becoming west by midnight, then becoming north late.
Waves calm to 1 foot.
.THURSDAY...Partly cloudy. Highs 62 to 67. East winds up to 5 mph
becoming south by mid afternoon. Waves calm to 1 foot.
.THURSDAY NIGHT...A chance of rain showers through midnight. Mostly
cloudy. Lows 59 to 64 inland and around 57 at the shore. Chance of
showers 30 percent.
.FRIDAY...A chance of rain showers by mid afternoon. Partly cloudy.
Highs around 64 at the shore and 66 to 71 inland. Chance of showers
30 percent.
.FRIDAY NIGHT...Mostly cloudy. Lows 56 to 61.
.SATURDAY THROUGH SUNDAY...Partly cloudy. Highs around 63 at the
shore and 66 to 71 inland. Lows 54 to 59.
.SUNDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows 55 to 60.
.MONDAY...Partly cloudy. Highs around 60 at the shore and 65 to
70 inland.

&&

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

.TODAY...Sunny through mid afternoon then becoming partly cloudy.
Highs around 67 at the shore and 70 to 75 inland. Northwest winds
10 to 15 mph becoming west 5 to 15 mph by mid afternoon. Waves 1 to
2 feet subsiding to calm to 1 foot, then building to 1 to 2 feet.
.TONIGHT...Mostly clear. Lows 57 to 62. West winds 5 to 15 mph
becoming northwest late. Waves subsiding to calm to 1 foot.
.WEDNESDAY...Sunny. Highs around 65 at the shore and 68 to
73 inland. Northwest winds 5 to 10 mph becoming southwest by mid
afternoon. Waves calm to 1 foot.
.WEDNESDAY NIGHT...Partly cloudy. Lows 58 to 63. Southwest winds
5 to 10 mph becoming west by midnight, then becoming north late.
Waves calm to 1 foot.
.THURSDAY...Mostly sunny. Highs around 65 at the shore and 67 to
72 inland. East winds up to 5 mph becoming south by mid afternoon.
Waves calm to 1 foot.
.THURSDAY NIGHT...A chance of rain showers through midnight. Mostly
cloudy. Lows 60 to 65. Chance of showers 30 percent.
.FRIDAY...A 30 percent chance of rain showers by mid afternoon.
Partly cloudy. Highs around 66 at the shore and 70 to 75 inland.
.FRIDAY NIGHT...Partly cloudy with a chance of rain showers through
midnight, then mostly cloudy late. Lows around 59. Chance of showers
30 percent.
.SATURDAY AND SATURDAY NIGHT...Partly cloudy. Highs around 67 at the
shore and 69 to 74 inland. Lows 56 to 61.
.SUNDAY...Sunny. Highs around 64 at the shore and 66 to 71 inland.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows around 59. Highs
around 64 at the shore and 67 to 72 inland.

&&

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

.TODAY...Mostly sunny. Highs around 65 at the shore and 69 to
74 inland. Northwest winds 5 to 15 mph becoming southwest by mid
afternoon. Waves 1 to 2 feet subsiding to calm to 1 foot, then
building to 2 to 3 feet.
.TONIGHT...Mostly clear. Lows 55 to 60. West winds 5 to 15 mph
becoming northwest 5 to 10 mph late. Waves subsiding to calm to
1 foot.
.WEDNESDAY...Sunny. Highs around 64 at the shore and 68 to
73 inland. Northwest winds 5 to 10 mph becoming southwest 5 to
15 mph by mid afternoon. Waves building to 1 to 2 feet.
.WEDNESDAY NIGHT...Partly cloudy. Lows 55 to 60. Southwest winds
5 to 10 mph becoming north late. Waves subsiding to calm to 1 foot.
.THURSDAY...Partly cloudy. Highs around 64 at the shore and 67 to
72 inland. Northeast winds up to 5 mph becoming southeast by mid
afternoon. Waves calm to 1 foot.
.THURSDAY NIGHT...Mostly cloudy with a 40 percent chance of rain
showers. Lows 59 to 64 inland and around 57 at the shore.
.FRIDAY...A chance of rain showers by mid afternoon. Partly cloudy.
Highs around 65 at the shore and 69 to 74 inland. Chance of showers
30 percent.
.FRIDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows 55 to 60.
.SATURDAY THROUGH SUNDAY...Partly cloudy. Highs around 62 at the
shore and 68 to 73 inland. Lows 54 to 59.
.SUNDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows 55 to 60.
.MONDAY...Partly cloudy. Highs around 62 at the shore and 67 to
72 inland.

&&


$$