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MIZ001-132000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Tue May 13 2025

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

.TODAY...Unseasonably warm. Sunny. Highs around 59 at the shore and
82 to 87 inland. South winds 5 to 10 mph becoming east late. Waves
1 to 2 feet subsiding to calm to 1 foot.
.TONIGHT...Mostly clear through midnight then becoming mostly
cloudy. Lows around 45. Southeast winds 5 to 10 mph. Waves building
to 1 to 2 feet, then subsiding to calm to 1 foot.
.WEDNESDAY...Much cooler. Partly sunny. Highs around 52 at the shore
and 62 to 67 inland. East winds 5 to 10 mph becoming northeast 5 to
15 mph by mid afternoon. Waves calm to 1 foot.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 42. Northeast winds
5 to 15 mph. Waves building to 1 to 2 feet subsiding to calm to
1 foot.
.THURSDAY...A 40 percent chance of rain showers by mid afternoon.
Mostly cloudy. Highs around 50 at the shore and 57 to 62 inland.
East winds 5 to 15 mph increasing to 15 to 20 mph late. Waves
building to 2 to 3 feet.
.THURSDAY NIGHT...Rain showers and a chance of thunderstorms through
midnight, then a chance of rain showers late. Mostly cloudy. Lows
around 43. Chance of precipitation 90 percent.
.FRIDAY...A chance of rain showers by mid afternoon. Mostly cloudy.
Highs around 49 at the shore and 53 to 58 inland. Chance of showers
50 percent.
.FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of rain
showers. Lows around 40.
.SATURDAY...Mostly cloudy with a 30 percent chance of rain showers.
Highs 48 to 53.
.SATURDAY NIGHT AND SUNDAY...Mostly cloudy. Lows around 38. Highs
46 to 51.
.SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows around 38. Highs
46 to 51.

&&

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

.TODAY...Sunny. Highs around 50 at the shore and 69 to 74 inland.
South winds 5 to 10 mph becoming southeast 5 to 15 mph by mid
afternoon. Waves 2 to 3 feet subsiding to 1 to 2 feet.
.TONIGHT...Mostly clear through midnight then becoming mostly
cloudy. Lows 40 to 45. Southeast winds 5 to 15 mph becoming south
late, then becoming southeast 5 to 10 mph late. Waves building to
2 to 4 feet.
.WEDNESDAY...Cooler. Partly sunny. Highs around 45 at the shore and
53 to 58 inland. East winds 5 to 10 mph becoming 5 to 15 mph by mid
afternoon. Waves subsiding to 1 to 2 feet.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 41. East winds 5 to
15 mph. Waves building to 2 to 3 feet.
.THURSDAY...Breezy. A 20 percent chance of rain showers by mid
afternoon. Mostly cloudy. Highs around 47 at the shore and 51 to
56 inland. East winds 10 to 20 mph. Waves building to 3 to 6 feet.
.THURSDAY NIGHT...Rain showers and a chance of thunderstorms through
midnight, then rain showers likely late. Lows around 43. Chance of
precipitation 90 percent.
.FRIDAY...A chance of rain showers by mid afternoon. Mostly cloudy.
Highs 47 to 52. Chance of showers 40 percent.
.FRIDAY NIGHT...Mostly cloudy with a 30 percent chance of rain
showers. Lows around 39.
.SATURDAY THROUGH SUNDAY...Cool. Mostly cloudy. Highs 44 to 49. Lows
around 38.
.SUNDAY NIGHT AND MONDAY...Cool. Partly cloudy. Lows around 38.
Highs 43 to 48.

&&

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

.TODAY...Sunny. Highs around 56 at the shore and 76 to 81 inland.
South winds 5 to 10 mph becoming southeast 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 through midnight then becoming mostly
cloudy. Lows 40 to 45. Southeast winds 5 to 15 mph. Waves building
to 2 to 3 feet subsiding to 1 to 2 feet.
.WEDNESDAY...Much cooler. Partly sunny. Highs around 46 at the shore
and 57 to 62 inland. East winds 5 to 15 mph. Waves 1 to 2 feet.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 40. East winds 5 to
15 mph. Waves building to 2 to 3 feet.
.THURSDAY...Breezy. A 20 percent chance of rain showers by mid
afternoon. Cloudy. Highs around 47 at the shore and 53 to 58 inland.
East winds 10 to 20 mph. Waves building to 3 to 5 feet.
.THURSDAY NIGHT...Rain showers and a chance of thunderstorms through
midnight, then rain showers likely late. Lows around 43. Chance of
precipitation 90 percent.
.FRIDAY...A chance of rain showers by mid afternoon. Mostly cloudy.
Highs around 47 at the shore and 52 to 57 inland. Chance of showers
40 percent.
.FRIDAY NIGHT...Mostly cloudy with a 30 percent chance of rain
showers. Lows around 39.
.SATURDAY THROUGH SUNDAY...Mostly cloudy. Highs 46 to 51. Lows
around 38.
.SUNDAY NIGHT AND MONDAY...Cool. Partly cloudy. Lows around 37.
Highs 45 to 50.

&&

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

.TODAY...Warmer, sunny. Highs around 56 at the shore and 79 to
84 inland. Southwest winds 5 to 10 mph becoming east late. Waves
1 to 2 feet subsiding to calm to 1 foot.
.TONIGHT...Mostly clear through midnight then becoming mostly
cloudy. Lows around 44. East winds 5 to 15 mph becoming southeast by
midnight, then decreasing to up to 5 mph late. Waves building to
2 to 3 feet subsiding to 1 to 2 feet.
.WEDNESDAY...Cooler. Partly sunny. Highs around 50 at the shore and
61 to 66 inland. East winds 5 to 10 mph becoming 5 to 15 mph by mid
afternoon. Waves subsiding to calm to 1 foot building to 1 to
2 feet.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 42. East winds 5 to
15 mph. Waves 1 to 2 feet.
.THURSDAY...A 40 percent chance of rain showers by mid afternoon.
Mostly cloudy. Highs around 49 at the shore and 56 to 61 inland.
East winds 5 to 15 mph increasing to 15 to 20 mph late. Waves
building to 3 to 5 feet.
.THURSDAY NIGHT...Rain showers and a chance of thunderstorms through
midnight, then a chance of rain showers late. Mostly cloudy. Lows
around 44. Chance of precipitation 90 percent.
.FRIDAY...A chance of rain showers by mid afternoon. Mostly cloudy.
Highs around 49 at the shore and 52 to 57 inland. Chance of showers
50 percent.
.FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of rain
showers. Lows around 40.
.SATURDAY...A chance of rain showers through early afternoon. Mostly
cloudy. Highs around 46 at the shore and 48 to 53 inland. Chance of
showers 30 percent.
.SATURDAY NIGHT AND SUNDAY...Cool. Mostly cloudy. Lows around 38.
Highs 45 to 50.
.SUNDAY NIGHT AND MONDAY...Cool. Partly cloudy. Lows around 38.
Highs around 45 at the shore and 47 to 52 inland.

&&


$$