March weather forecastMackinac Island, MI

March
Weather in March
March brings a noticeable change in the Mackinac Island weather narrative. Average temperatures rise to a high of 32.7°F (0.4°C) signalling a gradual transition towards spring. The snowfall decreases correspondingly, but a greater frequency of rainy days ensures maintainance of humidity levels. Longer daylight hours hint at the seasons changing as they stretch to twelve hours. With the thaw underway, the island begins its transformation, shedding the white of winter for the green of spring.Temperature
As March sets, the average high-temperature shows a slight increase, moving up from a freezing cold 24.3°F (-4.3°C) in February to a cold 32.7°F (0.4°C). Mackinac Island's average low-temperature during March nights is observed to be a subzero cold 22.3°F (-5.4°C).Humidity
In Mackinac Island, Michigan, the average relative humidity in March is 86%.Rainfall
In Mackinac Island, Michigan, in March, it is raining for 8.4 days, with typically 1.5" (38mm) of accumulated precipitation. In Mackinac Island, during the entire year, the rain falls for 131 days and collects up to 21.22" (539mm) of precipitation.Snowfall
Months with snowfall in Mackinac Island are January through May, October through December. In March, it is snowing for 12.5 days. Throughout March, 4.21" (107mm) of snow is accumulated. In Mackinac Island, during the entire year, snow falls for 93.6 days and aggregates up to 27.91" (709mm) of snow.Ocean temperature
The months with the coldest seawater in Mackinac Island are February through April, with an average ocean temperature of 35.6°F (2°C).Note: In swimming engagements, this poses immediate life-threatening risks. The loss of breath control is instantaneous, thereby hindering clear thought. A specialized swimsuit is mandatory to limit thermal dissipation.
Daylight
In Mackinac Island, Michigan, the average length of the day in March is 11h and 57min.On the first day of the month, sunrise is at 7:15 am and sunset at 6:25 pm EST. On the last day of March, in Mackinac Island, Michigan, sunrise is at 7:18 am and sunset at 8:06 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
In Mackinac Island, Michigan, the average sunshine in March is 4.7h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 1 in March suggests the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Mackinac Island, MI
- Average high temperature in March: 32.7°F
The warmest month (with the highest average high temperature) is July (71.4°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in March: 22.3°F
The month with the highest average low temperature is August (58.6°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).
Average pressure in March
Mackinac Island, MI
- Average pressure in March: 30.09"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in March
Mackinac Island, MI
- Average wind speed in March: 9.3mph
The windiest months (with the highest average wind speed) are November and December (10.9mph).
The calmest months (with the lowest average wind speed) are June and July (7.6mph).
Average humidity in March
Mackinac Island, MI
- Average humidity in March: 86%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (75%).
Average rainfall in March
Mackinac Island, MI
- Average rainfall in March: 1.5"
The wettest month (with the highest rainfall) is October (2.72").
The driest month (with the least rainfall) is January (1.3").
Average rainfall days in March
Mackinac Island, MI
- Average rainfall days in March: 8.4 days
The month with the highest number of rainy days is October (16.5 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in March
Mackinac Island, MI
- Average snowfall in March: 4.21"
The month with the highest snowfall is January (5.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in March
Mackinac Island, MI
- Average snowfall days in March: 12.5 days
The month with the highest number of snowfall days is January (21.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in March
Mackinac Island, MI
- Average sea temperature in March: 36°F
The best month for swimming (with the highest average sea temperature) is August (61°F).
The coldest months (with the lowest average sea temperature) are February, March and April (36°F).
Average daylight in March /
Average sunshine in March
Mackinac Island, MI
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in March: 4h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 1h and 54min).
Average sunshine days in March
Mackinac Island, MI
- Average sunshine days in March: 12.4 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is January (7.1 days).
Average UV index in March
Mackinac Island, MI
- Average UV index in March: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in March
Mackinac Island, MI
- Average cloud cover in March: 61
The month with the most cloud cover is January (Cloud cover 80).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in March
Mackinac Island, MI
- Average visibility in March: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).





