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MIZ001-190845-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
344 PM EDT Fri Apr 18 2025

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

.TONIGHT...Isolated rain showers early in the evening. Patchy fog
through midnight. Mostly cloudy. Lows around 31. North winds 5 to
15 mph. Waves calm to 1 foot.
.SATURDAY...Partly sunny. Highs around 40. Northwest winds 5 to
15 mph becoming west 5 to 10 mph late. Waves calm to 1 foot.
.SATURDAY NIGHT...Mostly clear. Lows around 33. Southwest winds 5 to
10 mph becoming south late. Waves calm to 1 foot.
.SUNDAY...Mostly sunny through early afternoon then becoming partly
sunny. Highs around 43. South winds up to 10 mph becoming southeast
late. Waves calm to 1 foot.
.SUNDAY NIGHT...A 30 percent chance of light rain and light snow
late. Cloudy. Lows 32 to 37. East winds 5 to 15 mph becoming
northeast late. Waves building to 1 to 2 feet.
.MONDAY...Light rain and light snow likely through early afternoon,
then light rain likely by mid afternoon. Highs 37 to 42. Chance of
precipitation 60 percent.
.MONDAY NIGHT...Mostly cloudy through midnight then becoming partly
cloudy. Lows 33 to 38.
.TUESDAY...Partly cloudy. Highs around 43.
.TUESDAY NIGHT...A chance of rain showers late. Mostly cloudy. Lows
34 to 39. Chance of showers 40 percent.
.WEDNESDAY...Partly sunny. Highs around 45.
.WEDNESDAY NIGHT...Partly cloudy. Lows 34 to 39.
.THURSDAY THROUGH FRIDAY...Mostly cloudy. Highs around 45. Lows
34 to 39.

&&

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

.TONIGHT...Mostly cloudy. Patchy fog through midnight. Lows around
31. North winds 10 to 15 mph. Waves 1 to 2 feet.
.SATURDAY...Partly sunny through early afternoon then becoming
mostly sunny. Highs around 39. North winds 10 to 15 mph becoming
west 5 to 10 mph late. Waves subsiding to calm to 1 foot.
.SATURDAY NIGHT...Mostly clear. Lows around 34. Southwest winds 5 to
10 mph becoming south late. Waves calm to 1 foot.
.SUNDAY...Partly cloudy. Highs around 40. South winds 5 to 15 mph
becoming southeast by mid afternoon. Waves building to 1 to 2 feet.
.SUNDAY NIGHT...A chance of light rain and a slight chance of light
snow late. Mostly cloudy. Lows 32 to 37. Southeast winds 5 to 15 mph
becoming east late. Chance of precipitation 30 percent. Waves
building to 2 to 4 feet.
.MONDAY...Light rain and light snow likely through early afternoon,
then light rain likely by mid afternoon. Highs 36 to 41. Chance of
precipitation 60 percent.
.MONDAY NIGHT...Mostly cloudy with a 30 percent chance of rain
showers through midnight, then partly cloudy late. Lows 34 to 39.
.TUESDAY...Partly cloudy. Highs around 41.
.TUESDAY NIGHT...A chance of rain showers late. Mostly cloudy. Lows
around 36. Chance of showers 30 percent.
.WEDNESDAY...Partly sunny. Highs around 43.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows around 36. Highs
around 43.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. Lows around 37. Highs
around 44.

&&

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

.TONIGHT...Mostly cloudy. Patchy fog early in the evening. Lows
around 31. North winds 10 to 15 mph. Waves 1 to 2 feet.
.SATURDAY...Partly sunny through early afternoon then becoming
mostly sunny. Highs around 39. North winds 10 to 15 mph becoming
west 5 to 10 mph late. Waves subsiding to calm to 1 foot.
.SATURDAY NIGHT...Mostly clear. Lows 31 to 36. Southwest winds 5 to
10 mph becoming south late. Waves calm to 1 foot.
.SUNDAY...Partly cloudy. Highs around 41. South winds 5 to 15 mph
becoming southeast by mid afternoon. Waves building to 1 to 2 feet.
.SUNDAY NIGHT...A 20 percent chance of light rain and light snow
late. Cloudy. Lows 32 to 37. Southeast winds 5 to 15 mph becoming
east late. Waves building to 2 to 3 feet.
.MONDAY...Light rain and light snow likely through early afternoon,
then light rain likely by mid afternoon. Highs 37 to 42. Chance of
precipitation 60 percent.
.MONDAY NIGHT...Mostly cloudy with a 30 percent chance of rain
showers through midnight, then partly cloudy late. Lows 33 to 38.
.TUESDAY...Partly cloudy. Highs around 42.
.TUESDAY NIGHT...A chance of rain showers late. Mostly cloudy. Lows
34 to 39. Chance of showers 30 percent.
.WEDNESDAY...Mostly cloudy through early afternoon then becoming
partly cloudy. Highs around 44.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows 34 to 39. Highs
around 44.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. Lows 34 to 39. Highs
around 44.

&&

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

.TONIGHT...Isolated rain showers early in the evening. Patchy fog
through midnight. Mostly cloudy. Lows around 32. North winds 5 to
15 mph. Waves calm to 1 foot.
.SATURDAY...Partly sunny. Highs around 40. Northwest winds 10 to
15 mph becoming west 5 to 10 mph late. Waves calm to 1 foot.
.SATURDAY NIGHT...Mostly clear. Lows around 33. Southwest winds up
to 10 mph becoming south late. Waves calm to 1 foot.
.SUNDAY...Mostly sunny through early afternoon then becoming partly
sunny. Highs around 42. South winds up to 10 mph becoming east late.
Waves building to 1 to 2 feet.
.SUNDAY NIGHT...A 30 percent chance of light rain and light snow
late. Cloudy. Lows 32 to 37. East winds 5 to 15 mph. Waves building
to 2 to 3 feet.
.MONDAY...Light rain and light snow likely through early afternoon,
then light rain likely by mid afternoon. Highs 37 to 42. Chance of
precipitation 60 percent.
.MONDAY NIGHT...Mostly cloudy with a 30 percent chance of rain
showers through midnight, then partly cloudy late. Lows 33 to 38.
.TUESDAY...Partly cloudy. Highs around 43.
.TUESDAY NIGHT...A chance of rain showers late. Mostly cloudy. Lows
around 36. Chance of showers 40 percent.
.WEDNESDAY...Partly sunny. Highs around 45.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows around 36. Highs
around 45.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. Lows 35 to 40. Highs
around 45.

&&


$$