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MIZ001-210900-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
355 PM EDT Mon May 20 2024

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

.TONIGHT...Mostly cloudy. Areas of dense fog late. Lows 41 to 46.
East winds 5 to 10 mph becoming northwest by midnight, then becoming
north late. Waves calm to 1 foot.
.TUESDAY...Partly sunny through early afternoon, then cloudy with a
50 percent chance of rain showers by mid afternoon. Highs around
49 at the shore and 57 to 62 inland. Northeast winds 5 to 15 mph
becoming east 10 to 20 mph by mid afternoon. Waves building to 2 to
3 feet.
.TUESDAY NIGHT...Breezy. Rain showers and a chance of thunderstorms.
Lows around 44. East winds 15 to 25 mph becoming southeast late.
Chance of precipitation 90 percent. Waves building to 4 to 7 feet
subsiding to 2 to 4 feet.
.WEDNESDAY...Windy. Rain showers likely through early afternoon,
then a chance of rain showers by mid afternoon. Mostly cloudy. Highs
around 48 at the shore and 53 to 58 inland. South winds 15 to 25 mph
becoming southwest 20 to 30 mph by late morning, then increasing to
25 to 35 mph late. Chance of showers 60 percent. Waves building to
9 to 12 feet.
.WEDNESDAY NIGHT...Windy. A 30 percent chance of rain showers
through midnight. Mostly cloudy. Lows around 41. West winds 15 to
25 mph. Waves subsiding to 3 to 5 feet.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs around 49 at the
shore and 53 to 58 inland. Lows around 40.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 42.
.SATURDAY...A 40 percent chance of rain showers. Mostly cloudy
through early afternoon then becoming partly cloudy. Highs around
48 at the shore and 53 to 58 inland.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows around 42. Highs
around 51 at the shore and 56 to 61 inland.
.SUNDAY NIGHT...Mostly cloudy. Lows around 42.
.MEMORIAL DAY...A chance of rain showers by mid afternoon. Partly
sunny. Highs around 50 at the shore and 55 to 60 inland. Chance of
showers 30 percent.

&&

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

.TONIGHT...Mostly cloudy. Patchy fog by midnight. Areas of dense fog
late. Lows around 41. East winds up to 5 mph becoming northwest by
midnight, then becoming north late. Waves calm to 1 foot.
.TUESDAY...A 50 percent chance of rain showers by mid afternoon.
Mostly cloudy. Locally heavy rainfall possible by mid afternoon.
Highs around 45 at the shore and 53 to 58 inland. Northeast winds
5 to 10 mph becoming east 5 to 15 mph by late morning. Waves
building to 1 to 2 feet.
.TUESDAY NIGHT...Windy. Rain showers and a chance of thunderstorms.
Lows around 42. East winds 15 to 25 mph becoming southeast late.
Chance of precipitation 90 percent. Waves building to 7 to 10 feet.
.WEDNESDAY...Windy. Rain showers likely through early afternoon,
then a chance of rain showers by mid afternoon. Mostly cloudy. Highs
around 48 at the shore and 50 to 55 inland. South winds 20 to 30 mph
becoming southwest 25 to 35 mph late. Chance of showers 60 percent.
Waves building to 10 to 14 feet.
.WEDNESDAY NIGHT...Windy. A chance of rain showers through midnight,
then a slight chance of rain showers late. Mostly cloudy. Lows
around 41. West winds 15 to 25 mph. Chance of showers 30 percent.
Waves subsiding to 3 to 6 feet.
.THURSDAY THROUGH FRIDAY...Cool. Partly cloudy. Highs around 47 at
the shore and 49 to 54 inland. Lows around 40.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 41.
.SATURDAY...Partly sunny with a 40 percent chance of rain showers.
Highs around 47 at the shore and 49 to 54 inland.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows around 41. Highs
around 50 at the shore and 53 to 58 inland.
.SUNDAY NIGHT...Mostly cloudy. Lows around 42.
.MEMORIAL DAY...A chance of rain showers by mid afternoon. Partly
sunny. Highs around 49 at the shore and 51 to 56 inland. Chance of
showers 30 percent.

&&

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

.TONIGHT...Mostly cloudy. Patchy fog by midnight. Areas of dense fog
late. Lows 39 to 44. East winds 5 to 10 mph becoming northwest by
midnight. Waves calm to 1 foot.
.TUESDAY...A 50 percent chance of rain showers by mid afternoon.
Mostly cloudy. Locally heavy rainfall possible by mid afternoon.
Highs around 46 at the shore and 54 to 59 inland. Northeast winds
5 to 10 mph becoming east 5 to 15 mph by late morning. Waves
building to 1 to 2 feet.
.TUESDAY NIGHT...Windy. Rain showers and a chance of thunderstorms.
Lows around 43. East winds 15 to 25 mph becoming southeast 20 to
30 mph late. Chance of precipitation 90 percent. Waves building to
6 to 9 feet.
.WEDNESDAY...Windy. Rain showers likely through early afternoon,
then a chance of rain showers by mid afternoon. Mostly cloudy. Highs
around 47 at the shore and around 54 inland. South winds 20 to
30 mph becoming southwest 25 to 35 mph late. Chance of showers
60 percent. Waves 6 to 9 feet.
.WEDNESDAY NIGHT...Windy. A chance of rain showers through midnight,
then a slight chance of rain showers late. Mostly cloudy. Lows
around 40. West winds 15 to 25 mph. Chance of showers 30 percent.
Waves 5 to 8 feet.
.THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs around 47 at the
shore and 52 to 57 inland. Lows around 40.
.FRIDAY...Partly cloudy. Highs around 45 at the shore and 49 to
54 inland.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 41.
.SATURDAY...Partly sunny with a 40 percent chance of rain showers.
Highs around 47 at the shore and 52 to 57 inland.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows around 41. Highs
around 50 at the shore and 56 to 61 inland.
.SUNDAY NIGHT...Mostly cloudy. Lows around 42.
.MEMORIAL DAY...A chance of rain showers by mid afternoon. Partly
sunny. Highs around 49 at the shore and 54 to 59 inland. Chance of
showers 30 percent.

&&

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

.TONIGHT...Mostly cloudy then becoming partly cloudy by midnight
then becoming mostly cloudy. Patchy fog by midnight. Areas of dense
fog late. Lows around 43. Northeast winds 5 to 10 mph becoming
northwest by midnight, then becoming north late. Waves calm to
1 foot.
.TUESDAY...Partly sunny through early afternoon, then cloudy with a
50 percent chance of rain showers by mid afternoon. Highs around
48 at the shore and 55 to 60 inland. Northeast winds 5 to 10 mph
becoming east 5 to 15 mph by late morning. Waves building to 2 to
3 feet.
.TUESDAY NIGHT...Breezy. Rain showers and a chance of thunderstorms.
Lows around 44. East winds 15 to 25 mph becoming southeast late.
Chance of precipitation 90 percent. Waves building to 6 to 9 feet.
.WEDNESDAY...Windy. Rain showers likely through early afternoon,
then a chance of rain showers by mid afternoon. Mostly cloudy. Highs
around 49 at the shore and 51 to 56 inland. South winds 15 to 25 mph
becoming southwest 20 to 30 mph by late morning, then increasing to
25 to 35 mph late. Chance of showers 60 percent. Waves building to
9 to 12 feet.
.WEDNESDAY NIGHT...Windy. A 30 percent chance of rain showers
through midnight. Mostly cloudy. Lows around 41. West winds 15 to
25 mph. Waves subsiding to 3 to 5 feet.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs around 48 at the
shore and 50 to 55 inland. Lows around 40.
.FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of rain
showers. Lows around 41.
.SATURDAY...A 40 percent chance of rain showers. Mostly cloudy
through early afternoon then becoming partly cloudy. Highs around
49 at the shore and 51 to 56 inland.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows around 43. Highs
around 49 at the shore and 54 to 59 inland.
.SUNDAY NIGHT...Mostly cloudy. Lows around 42.
.MEMORIAL DAY...A chance of rain showers by mid afternoon. Partly
sunny. Highs around 51 at the shore and 53 to 58 inland. Chance of
showers 30 percent.

&&


$$