June weather forecastIsle Royale National Park, MI

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.

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.