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SXUS43 KMQT 170901
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MIZ001-172000-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
501 AM EDT Sat May 17 2025

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

.TODAY...Breezy. Much cooler. Patchy fog through early afternoon. A
chance of rain showers through mid afternoon, then a slight chance
of rain showers late. Cloudy. Highs around 46 at the shore and 48 to
53 inland. North winds 10 to 20 mph. Waves calm to 1 foot building
to 2 to 4 feet.
.TONIGHT...A slight chance of rain showers through midnight, then a
chance of rain and snow showers late. Cloudy. Lows around 35. North
winds 15 to 20 mph. Chance of precipitation 40 percent. Waves 2 to
4 feet.
.SUNDAY...Unseasonably cool. A 40 percent chance of rain and snow
showers through early afternoon. Patchy fog through early afternoon.
Mostly cloudy. Highs around 40. Northeast winds 10 to 20 mph
decreasing to 5 to 10 mph late. Waves subsiding to calm to 1 foot.
.SUNDAY NIGHT...Mostly clear. Lows around 37. North winds 5 to
10 mph becoming northeast 5 to 15 mph late. Waves building to 1 to
2 feet.
.MONDAY...Warmer, sunny. Highs around 45 at the shore and 49 to
54 inland. Northeast winds 10 to 20 mph. Waves building to 2 to
3 feet subsiding to calm to 1 foot.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows around 38. Highs
around 48 at the shore and 51 to 56 inland.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows around 40. Highs
around 48 at the shore and 52 to 57 inland.
.WEDNESDAY NIGHT...Partly cloudy through midnight then becoming
mostly cloudy. Lows around 40.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs around 50 at the
shore and 54 to 59 inland. Lows around 41.

&&

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

.TODAY...Windy. Much colder. Patchy fog through mid afternoon. A
chance of rain showers through early afternoon, then a slight chance
of rain showers by mid afternoon. Cloudy. Highs around 44 at the
shore and 46 to 51 inland. North winds 10 to 15 mph increasing to
15 to 25 mph by late morning. Waves 2 to 3 feet building to 3 to
6 feet.
.TONIGHT...Breezy. Cloudy with a 40 percent chance of rain showers.
Lows around 35. North winds 15 to 25 mph. Waves subsiding to 2 to
3 feet.
.SUNDAY...Unseasonably cool. A 50 percent chance of rain and snow
showers through early afternoon. Patchy fog through early afternoon.
Mostly cloudy. Highs around 40. Northeast winds 10 to 20 mph
becoming north 5 to 10 mph late. Waves subsiding to calm to 1 foot.
.SUNDAY NIGHT...Mostly clear. Lows around 36. North winds 5 to
15 mph becoming northeast late. Waves building to 1 to 2 feet.
.MONDAY...Cool, sunny. Highs 43 to 48. Northeast winds 5 to 15 mph.
Waves building to 2 to 3 feet subsiding to calm to 1 foot.
.MONDAY NIGHT AND TUESDAY...Cool. Mostly clear. Lows around 37.
Highs 45 to 50.
.TUESDAY NIGHT AND WEDNESDAY...Cool. Partly cloudy. Lows around 39.
Highs 46 to 51.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 40.
.THURSDAY...Partly cloudy. Highs 46 to 51.
.THURSDAY NIGHT...Mostly cloudy. Lows around 40.
.FRIDAY...Partly cloudy. Highs around 47 at the shore and 49 to
54 inland.

&&

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

.TODAY...Breezy. Much cooler. Patchy fog through early afternoon. A
chance of rain showers through early afternoon, then a slight chance
of rain showers by mid afternoon. Cloudy. Highs 45 to 50. North
winds 10 to 15 mph increasing to 15 to 25 mph by late morning. Waves
1 to 2 feet building to 3 to 6 feet.
.TONIGHT...Breezy. Cloudy with a 40 percent chance of rain showers.
Lows around 34. North winds 15 to 25 mph. Waves subsiding to 2 to
3 feet.
.SUNDAY...Unseasonably cool. A 50 percent chance of rain and snow
showers through early afternoon. Patchy fog through early afternoon.
Mostly cloudy. Highs around 40. Northeast winds 10 to 20 mph
becoming north 5 to 10 mph late. Waves subsiding to calm to 1 foot.
.SUNDAY NIGHT...Mostly clear. Lows around 36. North winds 5 to
15 mph becoming northeast late. Waves building to 1 to 2 feet.
.MONDAY...Warmer, sunny. Highs around 46 at the shore and 48 to
53 inland. Northeast winds 5 to 15 mph. Waves building to 2 to
3 feet subsiding to calm to 1 foot.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows around 37. Highs
around 48 at the shore and 50 to 55 inland.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows around 39. Highs
around 47 at the shore and 51 to 56 inland.
.WEDNESDAY NIGHT...Mostly cloudy. Lows around 40.
.THURSDAY...Partly cloudy. Highs around 48 at the shore and 52 to
57 inland.
.THURSDAY NIGHT...Mostly cloudy. Lows around 40.
.FRIDAY...Partly cloudy. Highs around 48 at the shore and 52 to
57 inland.

&&

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

.TODAY...Breezy, cooler. Patchy fog through early afternoon. A
chance of rain showers through early afternoon, then a slight chance
of rain showers by mid afternoon. Mostly cloudy. Highs around 46 at
the shore and 49 to 54 inland. North winds 10 to 20 mph increasing
to 15 to 25 mph by mid afternoon. Waves calm to 1 foot building to
1 to 2 feet.
.TONIGHT...A slight chance of rain showers through midnight, then a
chance of rain showers and a slight chance of snow showers late.
Cloudy. Lows around 35. North winds 15 to 20 mph. Chance of
precipitation 40 percent. Waves 1 to 2 feet.
.SUNDAY...Unseasonably cool. Cloudy with a 50 percent chance of rain
and snow showers through early afternoon, then partly sunny by mid
afternoon. Highs around 40. Northeast winds 5 to 15 mph. Waves
subsiding to calm to 1 foot.
.SUNDAY NIGHT...Mostly clear. Lows around 37. North winds 5 to
15 mph becoming northeast 10 to 15 mph late. Waves building to 1 to
2 feet.
.MONDAY...Warmer, sunny. Highs around 45 at the shore and 48 to
53 inland. Northeast winds 10 to 20 mph. Waves building to 2 to
3 feet subsiding to 1 to 2 feet.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows around 38. Highs
around 47 at the shore and 50 to 55 inland.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows around 39. Highs
around 47 at the shore and 50 to 55 inland.
.WEDNESDAY NIGHT...Partly cloudy through midnight then becoming
mostly cloudy. Lows around 40.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs around 49 at the
shore and 52 to 57 inland. Lows around 40.

&&


$$