What’s the climate like in Isle Royale National Park?
The current climate of Isle Royale National Park features average monthly temperatures ranging from highs of 24°C during the day to lows of -7°C. 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.
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.
On average, Isle Royale National Park gets 896 mm of precipitation each year. Of this, about 227 cm is snowfall. For comparison, UK gets 701 mm of precipitation each year.
Best time to visit Isle Royale National Park?
The best time to visit Isle Royale National Park for pleasant to warm weather is June through September. There might be some rain during this period, but the temperatures are just right for exploring Isle Royale National Park.
Climate Table of Isle Royale National Park
The climate table of Isle Royale National Park shows the average temperatures, precipitation, snow, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation 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.
- Average yearly temperature: 9°C
- Highest temperature: 24°C in July
- Lowest temperature: -7°C in January and February
- Precipitation*: 896 mm per year, averaging 75 mm per month
- Snowfall: 227 cm per year
- Driest months: 17 mm in January, 34 mm in February and 45 mm in December
- Wettest months: 130 mm in September, 110 mm in May and 102 mm in April
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in Isle Royale National Park
This graph shows the average maximum temperatures per month in Isle Royale National Park, Michigan. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Isle Royale National Park
This graph shows how much precipitation Isle Royale National Park, Michigan, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average Snowfall per Month in Isle Royale National Park
This graph shows how much snow Isle Royale National Park, Michigan, gets on average per month. The amount of snowfall is measured in centimetres and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Isle Royale National Park
This graph 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.
Yearly Temperature in Isle Royale National Park
This graph shows the average yearly temperature in Isle Royale National Park, Michigan. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Isle Royale National Park
This chart shows the total yearly precipitation in Isle Royale National Park, Michigan, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Isle Royale National Park
This chart shows the total yearly snowfall in Isle Royale National Park, Michigan, over the past few years. The total yearly snowfall, measured in centimetres, is the sum of all the snow that fell in the twelve months of that year.
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.
