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MIZ001-200800-
Recreational Forecast for Isle Royale National Park
National Weather Service Marquette MI
502 PM EDT Sun Jul 19 2026

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

.TONIGHT...A chance of rain showers and thunderstorms through
midnight, then rain showers likely and a slight chance of
thunderstorms late. Patchy smoke. Mostly cloudy. Lows around 57.
South winds 5 to 15 mph. Waves calm to 1 foot building to 2 to
4 feet.
.MONDAY...Breezy. Rain showers likely and a slight chance of
thunderstorms through early afternoon, then a chance of rain showers
and thunderstorms by mid afternoon. Highs around 70 at the shore and
76 to 81 inland. Southwest winds 10 to 20 mph. Chance of
precipitation 70 percent. Waves building to 3 to 6 feet.
.MONDAY NIGHT...Mostly cloudy with a chance of rain showers and a
slight chance of thunderstorms through midnight, then partly cloudy
late. Lows around 57. West winds 5 to 15 mph becoming northwest
10 to 20 mph late. Chance of precipitation 50 percent. Waves
subsiding to 2 to 3 feet.
.TUESDAY...Breezy. Mostly sunny. Highs around 65 at the shore and
67 to 72 inland. North winds 10 to 20 mph. Waves building to 3 to
5 feet.
.TUESDAY NIGHT...Mostly clear. Lows around 51. Northwest winds 5 to
15 mph. Waves subsiding to 1 to 2 feet.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs around 64 at
the shore and 71 to 76 inland. Lows 62 to 67 inland and around 55 at
the shore.
.THURSDAY...Warmer, sunny. Highs around 68 at the shore and 78 to
83 inland.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 61 to
66 inland and around 55 at the shore. Highs around 65 at the shore
and 75 to 80 inland.
.SATURDAY...A chance of rain showers through early afternoon. Partly
sunny. Highs around 67 at the shore and 77 to 82 inland. Chance of
showers 30 percent.
.SATURDAY NIGHT...A chance of rain showers. Mostly cloudy. Lows
61 to 66 inland and around 55 at the shore. Chance of showers
40 percent.
.SUNDAY...Warm. Partly cloudy with a 30 percent chance of rain
showers. Highs around 68 at the shore and 79 to 84 inland.

&&

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

.TONIGHT...Patchy smoke early in the evening. Areas of smoke by
midnight. Patchy smoke late. A chance of rain showers through
midnight. A chance of thunderstorms. Rain showers late. Lows 51 to
56. South winds 5 to 15 mph. Waves calm to 1 foot building to 2 to
3 feet.
.MONDAY...Patchy smoke through early afternoon. Rain showers likely
and a chance of thunderstorms through early afternoon, then a chance
of rain showers and thunderstorms by mid afternoon. Partly sunny.
Some thunderstorms may be severe by mid afternoon. Highs around
62 at the shore and 73 to 78 inland. Southwest winds 10 to 20 mph.
Chance of precipitation 70 percent. Waves building to 3 to 5 feet.
.MONDAY NIGHT...A 20 percent chance of rain showers and
thunderstorms through midnight. Mostly cloudy. Lows 54 to 59 inland
and around 50 at the shore. West winds 5 to 15 mph becoming
northwest 10 to 20 mph late. Waves subsiding to 1 to 2 feet building
to 2 to 3 feet.
.TUESDAY...Breezy. Partly cloudy. Highs around 59 at the shore and
66 to 71 inland. North winds 10 to 20 mph. Waves building to 3 to
5 feet.
.TUESDAY NIGHT...Mostly clear. Lows around 50. Northwest winds 5 to
15 mph. Waves subsiding to 1 to 2 feet.
.WEDNESDAY...Sunny. Highs around 59 at the shore and 69 to
74 inland.
.WEDNESDAY NIGHT...Partly cloudy. Lows 59 to 64 inland and around
50 at the shore.
.THURSDAY...Sunny. Highs around 60 at the shore and 75 to 80 inland.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows 57 to 62 inland and
around 49 at the shore. Highs around 56 at the shore and 71 to
76 inland.
.FRIDAY NIGHT...Partly cloudy through midnight then becoming mostly
cloudy. Lows 56 to 61 inland and around 48 at the shore.
.SATURDAY...A chance of rain showers through early afternoon. Partly
sunny. Highs around 58 at the shore and 72 to 77 inland. Chance of
showers 30 percent.
.SATURDAY NIGHT...A chance of rain showers. Mostly cloudy. Lows
58 to 63 inland and around 50 at the shore. Chance of showers
40 percent.
.SUNDAY...Partly sunny with a 30 percent chance of rain showers.
Highs around 60 at the shore and 75 to 80 inland.

&&

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

.TONIGHT...Patchy smoke. A chance of rain showers through midnight.
A chance of thunderstorms. Rain showers late. Lows 53 to 58 inland
and around 51 at the shore. South winds 5 to 15 mph. Waves calm to
1 foot building to 1 to 2 feet.
.MONDAY...Breezy. Patchy smoke through early afternoon. Rain showers
likely and a chance of thunderstorms through early afternoon, then a
chance of rain showers and thunderstorms by mid afternoon. Partly
sunny. Some thunderstorms may be severe by mid afternoon. Highs
around 69 at the shore and 75 to 80 inland. South winds 10 to 20 mph
becoming southwest by late morning. Chance of precipitation
70 percent. Waves building to 2 to 4 feet.
.MONDAY NIGHT...A 20 percent chance of rain showers and
thunderstorms through midnight. Mostly cloudy. Lows 53 to 58. West
winds 5 to 15 mph becoming northwest 10 to 20 mph late. Waves
subsiding to 1 to 2 feet, then building to 2 to 3 feet.
.TUESDAY...Breezy. Partly cloudy. Highs around 62 at the shore and
67 to 72 inland. North winds 10 to 20 mph. Waves building to 3 to
5 feet.
.TUESDAY NIGHT...Mostly clear. Lows around 50. Northwest winds 5 to
15 mph. Waves subsiding to 1 to 2 feet.
.WEDNESDAY...Sunny. Highs around 64 at the shore and 72 to
77 inland.
.WEDNESDAY NIGHT...Partly cloudy. Lows 61 to 66 inland and around
54 at the shore.
.THURSDAY...Warmer, sunny. Highs around 65 at the shore and 78 to
83 inland.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 59 to
64 inland and around 52 at the shore. Highs around 61 at the shore
and 74 to 79 inland.
.SATURDAY...Partly sunny with a 30 percent chance of rain showers.
Highs around 62 at the shore and 75 to 80 inland.
.SATURDAY NIGHT...A chance of rain showers. Mostly cloudy. Lows
60 to 65 inland and around 53 at the shore. Chance of showers
40 percent.
.SUNDAY...Partly sunny with a 30 percent chance of rain showers.
Highs around 65 at the shore and 78 to 83 inland.

&&

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

.TONIGHT...A chance of rain showers and thunderstorms through
midnight, then rain showers likely and a slight chance of
thunderstorms late. Patchy smoke. Mostly cloudy. Lows 54 to 59.
South winds 5 to 15 mph. Waves calm to 1 foot building to 2 to
4 feet.
.MONDAY...Breezy. Rain showers likely and a slight chance of
thunderstorms through early afternoon, then a chance of rain showers
and thunderstorms by mid afternoon. Partly sunny. Highs around 67 at
the shore and 74 to 79 inland. Southwest winds 10 to 20 mph. Chance
of precipitation 70 percent. Waves building to 3 to 6 feet.
.MONDAY NIGHT...Mostly cloudy with a chance of rain showers and a
slight chance of thunderstorms through midnight, then partly cloudy
late. Lows around 57. West winds 5 to 15 mph becoming northwest
10 to 15 mph late. Chance of precipitation 50 percent. Waves
subsiding to 1 to 2 feet.
.TUESDAY...Partly cloudy. Highs around 64 at the shore and 68 to
73 inland. North winds 10 to 20 mph. Waves subsiding to calm to
1 foot.
.TUESDAY NIGHT...Mostly clear. Lows around 51. Northwest winds 5 to
15 mph. Waves calm to 1 foot.
.WEDNESDAY...Sunny. Highs around 64 at the shore and 69 to
74 inland.
.WEDNESDAY NIGHT...Partly cloudy. Lows 59 to 64 inland and around
53 at the shore.
.THURSDAY...Warmer, sunny. Highs around 64 at the shore and 77 to
82 inland.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows 59 to 64 inland and
around 53 at the shore. Highs around 61 at the shore and 74 to
79 inland.
.FRIDAY NIGHT AND SATURDAY...Mostly cloudy. Lows 58 to 63 inland and
around 52 at the shore. Highs around 63 at the shore and 78 to
83 inland.
.SATURDAY NIGHT...A chance of rain showers. Mostly cloudy. Lows
59 to 64 inland and around 54 at the shore. Chance of showers
40 percent.
.SUNDAY...Partly sunny with a 30 percent chance of rain showers.
Highs around 64 at the shore and 79 to 84 inland.

&&


$$