March weather forecast
Isle Royale National Park, MI

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Calm evening waters at the Rock Harbor in Isle Royale National Park, Michigan, USA
Calm evening waters at the Rock Harbor in Isle Royale National Park, Michigan, USA

Weather in March

March brings in the first whispers of spring as the weather starts shifting from extreme cold. The weather shows a palpable increase from the freezing temperatures of February. Sunlight becomes more prevalent, heralding longer days and hinting at the upcoming spring. A moderate amount of rainfall characterizes this month, indicating a moist environment. The climate fluctuates from 12°F (-11.1°C) to 32°F (0°C), providing a taste of the upcoming warmth.

Temperature

With the onset of March, Isle Royale National Park's weather sees a temperature rise, transitioning from a subzero cold 21.2°F (-6°C) in February to an icy 32°F (0°C). In March, Isle Royale National Park experiences an average nighttime temperature of 12.2°F (-11°C).

Rainfall

In March, the rain falls for 9 days. Throughout March, 1.89" (48mm) of precipitation is accumulated. In Isle Royale National Park, Michigan, during the entire year, the rain falls for 125 days and collects up to 30.55" (776mm) of precipitation.

Ocean temperature

January through April, with an average ocean temperature of 35.6°F (2°C), are months with the coldest seawater in Isle Royale National Park.
Note: During swimming activities, this situation is lethal and fraught with danger. The frigid water triggers acute discomfort and swift hyperventilation. A specialized swimsuit is necessary to reduce thermal harm.

Daylight

The average length of the day in March in Isle Royale National Park is 11h and 56min.
On the first day of March, sunrise is at 7:34 am and sunset at 6:40 pm EST. On the last day of the month, sunrise is at 7:34 am and sunset at 8:24 pm EDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from EDT to EST.

Sunshine

The average sunshine in March is 5h.

UV index

The average daily maximum UV index in March is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: In March, the UV index of 3 transforms into the following advice:
Exercise prevention - Warding off sunburn is urged. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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Frequently asked questions

How cold is it in Isle Royale National Park in March?

Isle Royale National Park in March has an average high-temperature of 32°F (0°C) and an average low-temperature of 12.2°F (-11°C).

How many days does it rain in March in Isle Royale National Park?

In Isle Royale National Park, Michigan, in March, it is raining for 9 days, with typically 1.89" (48mm) of accumulated precipitation.

What months are the ocean coldest in Isle Royale National Park?

January through April, with an average ocean temperature of 35.6°F (2°C), are months with the coldest seawater.

How cold is the water in March in Isle Royale National Park?

In Isle Royale National Park, the average seawater temperature in March is 35.6°F (2°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.

How many hours of daylight does Isle Royale National Park have in March?

In Isle Royale National Park, Michigan, the average day length in March is 11h and 56min.

What time are sunrise and sunset in March in Isle Royale National Park?

On the first day of March in Isle Royale National Park, sunrise is at 7:34 am and sunset at 6:40 pm EST. On the last day of the month, sunrise is at 7:34 am and sunset at 8:24 pm EDT.

When does Daylight Saving Time (DST) start in March in Isle Royale National Park?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How many hours of sunshine does Isle Royale National Park have in March?

In March, the average sunshine duration in Isle Royale National Park is 5h.

What is the UV index reading in March in Isle Royale National Park?

The average daily maximum UV index in March in Isle Royale National Park, Michigan, is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average high temperature
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in March
Isle Royale National Park, MI

Average temperature in March - Isle Royale National Park, MI
  • Average high temperature in March: 32°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 March: 12°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).

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Average rainfall in March
Isle Royale National Park, MI

Average rainfall in March - Isle Royale National Park, MI
  • Average rainfall in March: 1.9"

The wettest month (with the highest rainfall) is September (3.4").
The driest month (with the least rainfall) is February (1.5").

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Average rainfall days in March
Isle Royale National Park, MI

Average rainfall days in March - Isle Royale National Park, MI
  • Average rainfall days in March: 9 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).

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Average sea temperature in March
Isle Royale National Park, MI

Average sea temperature in March - Isle Royale National Park, MI
  • Average sea temperature in March: 36°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).

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Average daylight in March /
Average sunshine in March
Isle Royale National Park, MI

Average daylight in March / Average sunshine in March - Isle Royale National Park, MI
  • Average daylight in March: 11h and 5min

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 March: 5h

The month with the most sunshine is July (Average sunshine: 10h).
The months with the least sunshine are November and December (Average sunshine: 3h).

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Average UV index in March
Isle Royale National Park, MI

Average UV index in March - Isle Royale National Park, MI
  • Average UV index in March: 3

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).

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Isle Royale National Park, Michigan, USA

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