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MIZ001-122000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Mon May 12 2025

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

.TODAY...Warmer, sunny. Highs around 60 at the shore and 74 to
79 inland. Southwest winds 10 to 20 mph becoming south 5 to 15 mph
late. Waves 2 to 4 feet subsiding to 1 to 2 feet.
.TONIGHT...Mostly clear. Lows around 45. South winds 5 to 10 mph.
Waves subsiding to calm to 1 foot building to 1 to 2 feet.
.TUESDAY...Sunny. Highs around 59 at the shore and 75 to 80 inland.
South winds 5 to 10 mph becoming east late. Waves subsiding to calm
to 1 foot.
.TUESDAY NIGHT...Partly cloudy. Lows around 44. Southeast winds 5 to
10 mph. Waves building to 1 to 2 feet, then subsiding to calm to
1 foot.
.WEDNESDAY...Cooler. Partly sunny. Highs around 55 at the shore and
65 to 70 inland. East winds 5 to 10 mph becoming northeast 5 to
15 mph by late morning. Waves calm to 1 foot.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 43.
.THURSDAY...A 50 percent chance of rain showers by mid afternoon.
Mostly cloudy. Highs around 53 at the shore and 60 to 65 inland.
.THURSDAY NIGHT...Rain showers likely and a chance of thunderstorms
through midnight, then a chance of rain showers late. Mostly cloudy.
Lows around 43. Chance of precipitation 70 percent.
.FRIDAY...Mostly cloudy with a 40 percent chance of rain showers.
Highs 49 to 54.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 39.
.SATURDAY...Mostly cloudy with a 40 percent chance of rain showers.
Highs 46 to 51.
.SATURDAY NIGHT AND SUNDAY...Cool. Mostly cloudy. Lows around 37.
Highs 45 to 50.

&&

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

.TODAY...Sunny. Highs around 50 at the shore and 63 to 68 inland.
Southwest winds 15 to 20 mph becoming south 10 to 15 mph by early
afternoon, then becoming southeast 5 to 15 mph late. Waves 2 to
4 feet subsiding to 1 to 2 feet.
.TONIGHT...Mostly clear. Lows around 43. Southeast winds 5 to 10 mph
becoming southwest 5 to 15 mph by midnight. Waves building to 2 to
3 feet.
.TUESDAY...Sunny. Highs around 50 at the shore and 64 to 69 inland.
South winds 5 to 10 mph becoming southeast 10 to 15 mph late. Waves
subsiding to 1 to 2 feet.
.TUESDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 42. Southeast winds 5 to 15 mph becoming south
late. Waves building to 2 to 4 feet.
.WEDNESDAY...Mostly cloudy. Highs around 46 at the shore and 55 to
60 inland. Southeast winds 5 to 10 mph becoming east 5 to 15 mph by
mid afternoon. Waves subsiding to 1 to 2 feet.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 41.
.THURSDAY...A 40 percent chance of rain showers by mid afternoon.
Mostly cloudy. Highs around 50 at the shore and 53 to 58 inland.
.THURSDAY NIGHT...Rain showers likely and a chance of thunderstorms
through midnight, then a chance of rain showers late. Mostly cloudy.
Lows around 42. Chance of precipitation 70 percent.
.FRIDAY...Mostly cloudy with a 30 percent chance of rain showers.
Highs 45 to 50.
.FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of rain
showers. Lows around 38.
.SATURDAY...Mostly cloudy with a 30 percent chance of rain showers.
Highs 43 to 48.
.SATURDAY NIGHT AND SUNDAY...Cool. Mostly cloudy. Lows around 37.
Highs 42 to 47.

&&

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

.TODAY...Sunny. Highs around 54 at the shore and 67 to 72 inland.
Southwest winds 15 to 20 mph becoming south 10 to 15 mph by mid
afternoon. Waves 1 to 2 feet.
.TONIGHT...Mostly clear. Lows around 44. South winds 5 to 10 mph
becoming 5 to 15 mph by midnight. Waves 1 to 2 feet.
.TUESDAY...Sunny. Highs around 53 at the shore and 69 to 74 inland.
South winds 5 to 10 mph becoming southeast 10 to 15 mph late. Waves
subsiding to calm to 1 foot, then building to 1 to 2 feet.
.TUESDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows around 42. Southeast winds 5 to 15 mph. Waves building
to 2 to 3 feet subsiding to 1 to 2 feet.
.WEDNESDAY...Cooler. Mostly cloudy. Highs around 48 at the shore and
58 to 63 inland. East winds 5 to 10 mph becoming 5 to 15 mph by mid
afternoon. Waves 1 to 2 feet.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 41.
.THURSDAY...A 40 percent chance of rain showers by mid afternoon.
Mostly cloudy. Highs around 50 at the shore and 56 to 61 inland.
.THURSDAY NIGHT...Rain showers likely and a chance of thunderstorms
through midnight, then a chance of rain showers late. Mostly cloudy.
Lows around 42. Chance of precipitation 70 percent.
.FRIDAY...Mostly cloudy with a 30 percent chance of rain showers.
Highs 47 to 52.
.FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of rain
showers. Lows around 38.
.SATURDAY...Cool. Mostly cloudy with a 30 percent chance of rain
showers. Highs around 47.
.SATURDAY NIGHT AND SUNDAY...Cool. Mostly cloudy. Lows around 37.
Highs 44 to 49.

&&

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

.TODAY...Warmer, sunny. Highs around 57 at the shore and 70 to
75 inland. Southwest winds 10 to 20 mph becoming southeast 5 to
15 mph late. Waves 2 to 4 feet subsiding to 1 to 2 feet.
.TONIGHT...Mostly clear. Lows around 45. Southeast winds 5 to 10 mph
becoming southwest by midnight. Waves 1 to 2 feet.
.TUESDAY...Sunny. Highs around 57 at the shore and 73 to 78 inland.
South winds 5 to 15 mph becoming east late. Waves subsiding to calm
to 1 foot, then building to 1 to 2 feet.
.TUESDAY NIGHT...Partly cloudy. Lows around 44. Southeast winds 5 to
15 mph becoming south late. Waves building to 2 to 3 feet subsiding
to 1 to 2 feet.
.WEDNESDAY...Partly sunny. Highs around 52 at the shore and 63 to
68 inland. Southeast winds 5 to 10 mph becoming east 10 to 15 mph
late. Waves subsiding to calm to 1 foot building to 1 to 2 feet.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 43.
.THURSDAY...A 50 percent chance of rain showers by mid afternoon.
Mostly cloudy. Highs around 52 at the shore and 59 to 64 inland.
.THURSDAY NIGHT...Rain showers likely and a chance of thunderstorms
through midnight, then a chance of rain showers late. Mostly cloudy.
Lows around 42. Chance of precipitation 70 percent.
.FRIDAY...Mostly cloudy with a 40 percent chance of rain showers.
Highs 48 to 53.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 39.
.SATURDAY...Mostly cloudy with a 40 percent chance of rain showers.
Highs 45 to 50.
.SATURDAY NIGHT AND SUNDAY...Cool. Mostly cloudy. Lows around 37.
Highs 44 to 49.

&&


$$