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United StatesThe climate of Isle Royale National Park
The current climate in Isle Royale National Park features temperatures ranging from a high of 24°C to a low of -7°C throughout the year. The average yearly temperature is around 9°C. At night, temperatures in the colder months average around -18°C and in the warmer months around 13°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Isle Royale National Park, Michigan.
Temperature records
The highest temperature recorded in Isle Royale National Park in recent years was 33°C in July 2014. The lowest daytime temperature recorded was -26°C in January 2014.
Precipitation and snowfall
On average, Isle Royale National Park gets 896 mm of precipitation each year. Of this, about 227 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Isle Royale National Park?
The best time to visit Isle Royale National Park for mild to warm weather is June up to September. You might get some rain, but the temperatures are just right to explore Isle Royale National Park.
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Climate Table of Isle Royale National Park
The climate table of Isle Royale National Park shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | -7 | -7 | 1 | 7 | 14 | 20 | 24 | 22 | 18 | 11 | 3 | -3 |
| Temp. min (°C) | -16 | -18 | -9 | -2 | 4 | 10 | 13 | 13 | 10 | 3 | -4 | -10 |
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| Precipitation (mm) | 17 | 34 | 57 | 102 | 110 | 82 | 88 | 81 | 130 | 89 | 61 | 45 |
| Snow (cm) | 24 | 58 | 24 | 35 | 4,5 | 0 | 0 | 0 | 0 | 1,1 | 21 | 60 |
| UV Index | 2 | 3 | 5 | 6 | 7 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Isle Royale National Park, Michigan. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Isle Royale National Park
Yearly Temperature in Isle Royale National Park
Precipitation charts
These charts show the average amount of precipitation in Isle Royale National Park, Michigan. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Isle Royale National Park
Total Yearly Precipitation in Isle Royale National Park
Average Snowfall per Month in Isle Royale National Park
Total Yearly Snowfall in Isle Royale National Park
UV index chart
This chart shows the average UV index per month in Isle Royale National Park, Michigan. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Isle Royale National Park
Weather experiences in Isle Royale National Park
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Average weather in Isle Royale National Park by month
Click on a month below to see detailed weather info for Isle Royale National Park. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.