Calm evening waters at the Rock Harbor in Isle Royale National Park, Michigan, USA
Weather in June
June introduces the early signs of summer with warmer weather. From spring-like weather in May, June displays a noticeable increase in temperature. Long daylight hours and their added sunshine make this month suitable for outdoor activities. Minor fluctuations in rainfall levels are observed. Temperatures average from 46°F (7.8°C) to 68°F (20°C), marking this month as one of the warmest in the year.
Note: Within the context of swimming, this state is extremely cold, dangerous, and can result in death. Hypothermia happens quickly in the absence of protective insulated waterproof clothing.
On the first day of the month, sunrise is at 5:59 am and sunset at 9:47 pm. On the last day of June, in Isle Royale National Park, sunrise is at 6:00 am and sunset at 9:58 pm EDT.
Note: An average UV index of 7 in June transforms into this advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Enhance your sun protection with tightly woven, yet airy clothing.
Temperature
Isle Royale National Park experiences a temperature shift with the start of June, with average high-temperatures moving from a mild 59°F (15°C) in May to a pleasant 68°F (20°C). Marked by a significant temperature drop from daytime highs, the average nighttime temperature in Isle Royale National Park, Michigan, lowers to a frosty 46.4°F (8°C) throughout June.Rainfall
In Isle Royale National Park, Michigan, during June, the rain falls for 13 days and regularly aggregates up to 3.19" (81mm) of precipitation. In Isle Royale National Park, during the entire year, the rain falls for 125 days and collects up to 30.55" (776mm) of precipitation.Ocean temperature
In Isle Royale National Park, the average seawater temperature in June is 37.4°F (3°C).Note: Within the context of swimming, this state is extremely cold, dangerous, and can result in death. Hypothermia happens quickly in the absence of protective insulated waterproof clothing.
Daylight
With an average of 16h and 0min of daylight, June has the longest days of the year in Isle Royale National Park.On the first day of the month, sunrise is at 5:59 am and sunset at 9:47 pm. On the last day of June, in Isle Royale National Park, sunrise is at 6:00 am and sunset at 9:58 pm EDT.
Sunshine
The average sunshine in June is 9h.UV index
The months with the highest UV index in Isle Royale National Park are June and July, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 7 in June transforms into this advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Enhance your sun protection with tightly woven, yet airy clothing.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Isle Royale National Park in June?
June temperatures in Isle Royale National Park, Michigan, vary between a high-temperature of 68°F (20°C) and a low-temperature of 46.4°F (8°C).
How much does it rain in Isle Royale National Park in June?
In Isle Royale National Park, Michigan, in June, during 13 rainfall days, 3.19" (81mm) of precipitation is typically accumulated.
What is the ocean temperature in June in Isle Royale National Park?
In Isle Royale National Park, the average seawater temperature in June is 37.4°F (3°C). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.
When are the longest days in Isle Royale National Park?
The month with the longest days is June, with an average of 16h and 0min of daylight.
What is the average length of the day in June in Isle Royale National Park?
The average day length in June is 15h and 59min.
When is the sunrise / sunset in June in Isle Royale National Park?
On the first day of June in Isle Royale National Park, sunrise is at 5:59 am and sunset at 9:47 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 9:58 pm EDT.
How many hours of sunshine does Isle Royale National Park have in June?
In Isle Royale National Park, Michigan, the average sunshine duration in June is 9h.
When is the highest UV index in Isle Royale National Park?
The months with the highest UV index in Isle Royale National Park are June and July, with an average maximum UV index of 7.
What is the UV index reading in June in Isle Royale National Park?
The average daily maximum UV index in June in Isle Royale National Park, Michigan, is 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
Average temperature in June
Isle Royale National Park, MI
- Average high temperature in June: 68°F
The warmest month (with the highest average high temperature) is July (75°F).
The month with the lowest average high temperature is January (18°F).
- Average low temperature in June: 46°F
The month with the highest average low temperature is July (54°F).
The coldest month (with the lowest average low temperature) is January (0°F).
Average rainfall in June
Isle Royale National Park, MI
- Average rainfall in June: 3.2"
The wettest month (with the highest rainfall) is September (3.4").
The driest month (with the least rainfall) is February (1.5").
Average rainfall days in June
Isle Royale National Park, MI
- Average rainfall days in June: 13 days
The months with the highest number of rainy days are June and September (13 days).
The months with the least rainy days are February and April (8 days).
Average sea temperature in June
Isle Royale National Park, MI
- Average sea temperature in June: 37°F
The best month for swimming (with the highest average sea temperature) is August (55°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (36°F).
Average daylight in June /
Average sunshine in June
Isle Royale National Park, MI
- Average daylight in June: 16h and 0min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in June: 9h
The month with the most sunshine is July (Average sunshine: 10h).
The months with the least sunshine are November and December (Average sunshine: 3h).
Average UV index in June
Isle Royale National Park, MI
- Average UV index in June: 7
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 1).
Isle Royale National Park, Michigan, USA
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