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Contents
- The climate of Grand Marais
- The Best Time to Visit Grand Marais
- The Worst Time to Visit Grand Marais
- Spring Weather in Grand Marais
- Summer Weather in Grand Marais
- Autumn Weather in Grand Marais
- Winter Weather in Grand Marais
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Grand Marais
Grand Marais in Michigan, USA is distinguished by a Humid Continental climate, as defined by the Koppen Climate Classification. This location bears witness to a warm summer with no dry season, and is characterized by large variations in temperature that span from one end of the spectrum to the other.
Navigating the year, the temperature ranges dramatically from 13.6°F (-10.2°C) in February to 72.1°F (22.3°C) in July. While residents of Grand Marais anticipate the warm summer, the cold stations itself quite prominently in the area. Indeed, the winter months of December, January, and February trail behind with the coldest temperatures, dipping as low as 13.8°F (-10.1°C) in January. Extremely cold winters and comparatively warm, humid summers, with April serving as the transition period, define the district backdrop of this diverse climate.
Rainfall is relatively even throughout the year, if leaning slightly towards the autumn months, with monthly averages duration between 1.5" (38mm) in March and 2.8" (71mm) in October. The snowfall, however, is more seasonally dependent. High snowfall is most associated with the winter months, stretching from December to February, and spilling into March with 10.08" (256mm) in snow in January. In the summer, no snow typically touches the ground.
Navigating the year, the temperature ranges dramatically from 13.6°F (-10.2°C) in February to 72.1°F (22.3°C) in July. While residents of Grand Marais anticipate the warm summer, the cold stations itself quite prominently in the area. Indeed, the winter months of December, January, and February trail behind with the coldest temperatures, dipping as low as 13.8°F (-10.1°C) in January. Extremely cold winters and comparatively warm, humid summers, with April serving as the transition period, define the district backdrop of this diverse climate.
Rainfall is relatively even throughout the year, if leaning slightly towards the autumn months, with monthly averages duration between 1.5" (38mm) in March and 2.8" (71mm) in October. The snowfall, however, is more seasonally dependent. High snowfall is most associated with the winter months, stretching from December to February, and spilling into March with 10.08" (256mm) in snow in January. In the summer, no snow typically touches the ground.
The Best Time to Visit Grand Marais
When looking to visit Grand Marais, the duration of May to September may be the most rewarding. During these months, the weather is at its warmest and most inviting, with temperatures peaking between 57°F (13.9°C) to 72.1°F (22.3°C), making it favorable for outdoor activities. It's also the period when the daylight shines brightest, reaching its zenith in June and July at 15.8 hours. This provides ample time for sightseeing, trekking, and other outdoor pursuits.
The Worst Time to Visit Grand Marais
Grand Marais experiences harsh winters, especially between December to March when the temperatures clock in at a chilling 13.8°F (-10.1°C) to 43.5°F (6.4°C). Snowfall is also at its heaviest. A considerable volume of 10.08" (256mm) hits the area in January, consequently reducing visibility. This, in combination with shorter daylight hours ranging from 8.6 to 13.6 hours, might impose limitations on outdoor activities, making it a less desirable time for tourists.
Spring Weather in Grand Marais
Spring sets foot in Grand Marais in April, releasing the city from a long-drawn winter's grip and serving temperatures that eventually touch 57°F (13.9°C) by May end. Although warmer, spring also escorts with it an increased rainfall seen between 1.5" (38mm) in March to 1.54" (39mm) by May. Even though the rate of rainfall escalates, April and May only engage in an average of 11.1 to 13.3 rainy days, thus not much hindrance to outdoor activities. With more moderate weather, lengthier daylight, and the magic of blossoming nature, spring can offer a delightful experience for visitors.
Summer Weather in Grand Marais
Summer in Grand Marais starts in June, rendering an atmospheric average of 66°F (18.9°C) to 72.1°F (22.3°C). This season is marked by increased humidity levels, at times reaching 78% in July. It is also the driest season of the year with lower rainfall of 1.93" (49mm). It's crucial to note that there can still be an average of 13.2 rainy days in July. The persistent warm ambiance under the longest daylight hours makes summer a perfect time to enjoy Grand Marais's beaches and scenic landscapes.
Autumn Weather in Grand Marais
Autumn enters Grand Marais in September and stays until November. During this period, temperatures typically moderate, falling from 65.1°F (18.4°C) in September to 39.2°F (4°C) in November. However, with an increased average rainfall amounting to 2.8" (71mm) by October, it makes autumn the wettest season. Despite this, the fall foliage displays a stunning palette of colors contributing to the beauty of the city's landscape.
Winter Weather in Grand Marais
Winter in Grand Marais, stretching from December through March, carries intense cold, with temperatures as low as 13.8°F (-10.1°C). The presence of considerable snowfall up to 10.08" (256mm) in January can produce breathtaking winter landscapes, although it may hinder outdoor activities. During this period, daylight hours are shortest, ranging from 9.1 hours in December to 13.6 hours by March end. Winters in Grand Marais are for those who appreciate the raw beauty and silence of frosty landscapes, or the challenge of winter sports.
Weather in January
Snow dominates the January weather in Grand Marais, Michigan, creating a perfect atmosphere for winter sports enthusiasts. The freezing air ensures comfortable conditions for snow accumulation, despite moderate wind intensity. Relative humidity is heightened, contributing to consistent snowfall. Weather in January »
Weather in February
Transitioning into February, the prevailing snowfall in Grand Marais lessens slightly. The climate continues to support winter activities with short daylight hours and low ultra-violet index. Sub-freezing temperatures persist, inducing a high snowfall frequency, though slightly reduced compared to January. Weather in February »
Weather in March
The onset of March witnesses a significant change in weather dynamics in Grand Marais. Snowfall begins to decrease, and the increasing daylight hours hint at the approaching spring season. The wind speed reduces, making it less harsh than the winter months. Weather in March »
Weather in April
April, often seen as the harbinger of spring in Grand Marais, brings a sharp drop in snowfall and a conspicuous rise in temperatures. The climate sees a remarkable increase in daylight duration and sunshine hours. Lower wind speeds create a pleasant ambiance, while the fairly strong sea temperatures hint at the influence of nearby water bodies. Weather in April »
Weather in May
May marks the complete arrival of spring in Grand Marais, with temperatures starting to rise significantly. These temperature changes translate into decreasing snowfall and increasing rainfall. The increased sunlight hours bring a warming effect, supported by comparatively lower wind speeds. Weather in May »
Weather in June
June's arrival brings about the height of summer in Grand Marais. The climate is characterized by the highest daylight and sunshine hours of the year. The numerous sunny days, combined with warm sea temperatures, make this a popular month for beach activities. Weather in June »
Weather in July
July witnesses the continuation of summer in full swing in Grand Marais. The extended sunshine hours and longer daylight duration contribute to the warming effect. The cloud% remains low, allowing clear skies and great visibility. The climatic high point is the month's temperature stretch from 55°F (12.8°C) to the yearly peak of 72.1°F (22.3°C), with no snowfall events registered. Weather in July »
Weather in August
Despite being late summer, August in Grand Marais sustains high temperatures and extended daylight hours. There's a gradual increase in humidity and cloud%, indicating an impending change in season. The high temperature and abundant sunshine form the highlight of the month. Weather in August »
Weather in September
September marks the transition from summer to fall in Grand Marais. The change is noted in the decreasing daylight hours and sunshine duration, as well as the falling sea temperature. The month experiences a moderate increase in cloud coverage, leading to somewhat reduced visibility. Weather in September »
Weather in October
October brings about a sharp change in Grand Marais’ weather with a significant drop in temperature and the first signs of snowfall since May. The number of sunshine hours are limited, signaling shorter days. The strong winds add a chill in the air, giving a hint of the forthcoming winter. Weather in October »
Weather in November
In November, the weather in Grand Marais takes a turn towards winter with a rapid drop in temperature. The days become even shorter, and the snowfall frequency increases. Besides, the month witnesses a slight decline in sea temperature and sunshine hours. Weather in November »
Weather in December
December is a time of peak winter conditions in Grand Marais, with short daylight hours and limited sunshine. The high wind speeds contribute to the winter's harshness. Furthermore, the high humidity due to cold temperatures coupled with increased rainfall heightens the wintry feel. Weather in December »
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 month is the coldest in Grand Marais?
Grand Marais, Michigan, notes the coldest temperatures in January, with a average high of 22.8°F (-5.1°C) and a low of 13.8°F (-10.1°C).
What are the most humid months in Grand Marais?
The months with the highest humidity are January and February, with an average relative humidity of 91%.
How much does it rain in Grand Marais?
In Grand Marais, Michigan, during the entire year, the rain falls for 123.2 days and collects up to 22.17" (563mm) of precipitation.
When does it snow in Grand Marais?
January through May, October through December are months with snowfall in Grand Marais, Michigan.
When does it snow the most in Grand Marais?
January is the month with the most snowfall. Snow falls for 24.8 days and accumulates 10.08" (256mm) of snow.
How many days does it snow in Grand Marais?
In Grand Marais, during the entire year, snow falls for 108.1 days and aggregates up to 48.31" (1227mm) of snow.
What is the month with the least sunshine in Grand Marais?
The month with the least sunshine in Grand Marais, Michigan, is January, with an average of 1.6h of sunshine.
What is the month with the lowest UV index in Grand Marais?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.
What is the driest month in Grand Marais?
March is the month with the least rainfall. Rain falls for 8.1 days and accumulates 1.5" (38mm) of precipitation.
When is the ocean coldest in Grand Marais?
March and April, with an average ocean temperature of 35.6°F (2°C), are months with the coldest seawater.
When is Daylight Saving Time (DST) in Grand Marais?
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 ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the least humid month in Grand Marais?
With an average relative humidity of 73%, May is the least humid month.
When it does not snow in Grand Marais?
June through September are months without snowfall.
When are the longest days in Grand Marais?
June has the longest days of the year, with an average of 15h and 48min of daylight.
What is the month with the highest UV index in Grand Marais?
The months with the highest UV index are June through August, with an average maximum UV index of 5.
What time of the year is the hottest in Grand Marais?
The warmest month in Grand Marais is July, with an average high-temperature of 72.1°F (22.3°C) and an average low-temperature of 55°F (12.8°C).
What month has the most sunshine in Grand Marais?
With an average of 9.9h of sunshine, July has the most sunshine of the year in Grand Marais, Michigan.
When is the ocean warmest in Grand Marais?
With an average ocean temperature of 59°F (15°C), August is the month with the warmest seawater.
What is the rainiest month in Grand Marais?
October is the month with the most rainfall in Grand Marais. Rain falls for 15.3 days and accumulates 2.8" (71mm) of precipitation.
What is the month with the shortest days in Grand Marais?
With an average of 8h and 36min of daylight, December has the shortest days of the year.
Average temperature
Grand Marais, MI
The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is January (22.8°F).
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is February (13.6°F).
Average pressure
Grand Marais, MI
- Average pressure in January:
30.01"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
29.95"Hg - Average pressure in November:
30.01"Hg - Average pressure in December:
30.02"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
Grand Marais, MI
- Average wind speed in January:
9.6mph - Average wind speed in February:
9.3mph - Average wind speed in March:
8.8mph - Average wind speed in April:
9mph - Average wind speed in May:
8mph - Average wind speed in June:
7.2mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7.4mph - Average wind speed in September:
8.3mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.1mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is November (10.1mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity
Grand Marais, MI
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (73%).
Average rainfall
Grand Marais, MI
- Average rainfall in January:
1.54" - Average rainfall in February:
1.61" - Average rainfall in March:
1.5" - Average rainfall in April:
2.09" - Average rainfall in May:
1.54" - Average rainfall in June:
1.93"
- Average rainfall in July:
1.93" - Average rainfall in August:
1.77" - Average rainfall in September:
1.93" - Average rainfall in October:
2.8" - Average rainfall in November:
1.73" - Average rainfall in December:
1.81"
The wettest month (with the highest rainfall) is October (2.8").
The driest month (with the least rainfall) is March (1.5").
Average rainfall days
Grand Marais, MI
- Average rainfall days in January:
4.3 days - Average rainfall days in February:
3.1 days - Average rainfall days in March:
8.1 days - Average rainfall days in April:
11.1 days - Average rainfall days in May:
13.3 days - Average rainfall days in June:
12 days
- Average rainfall days in July:
13.2 days - Average rainfall days in August:
14 days - Average rainfall days in September:
12.7 days - Average rainfall days in October:
15.3 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is October (15.3 days).
The month with the least rainy days is February (3.1 days).
Average snowfall
Grand Marais, MI
- Average snowfall in January:
10.08" - Average snowfall in February:
9.96" - Average snowfall in March:
6.69" - Average snowfall in April:
4.33" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is January (10.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Grand Marais, MI
- Average snowfall days in January:
24.8 days - Average snowfall days in February:
21.9 days - Average snowfall days in March:
14.6 days - Average snowfall days in April:
8.5 days - Average snowfall days in May:
1.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
3.3 days - Average snowfall days in November:
13.5 days - Average snowfall days in December:
20.4 days
The month with the highest number of snowfall days is January (24.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature
Grand Marais, MI
The best month for swimming (with the highest average sea temperature) is August (59°F).
The coldest months (with the lowest average sea temperature) are March and April (36°F).
Average daylight / Average sunshine
Grand Marais, MI
- Average daylight in January:
9h and 1min - Average daylight in February:
10h and 2min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 1min - Average daylight in June:
15h and 5min
- Average daylight in July:
15h and 2min - Average daylight in August:
14h and 1min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 2min - Average daylight in December:
8h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January:
1h and 4min - Average sunshine in February:
2h and 3min - Average sunshine in March:
4h and 2min - Average sunshine in April:
6h and 2min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 3min - Average sunshine in September:
7h and 3min - Average sunshine in October:
4h and 4min - Average sunshine in November:
3h and 1min - Average sunshine in December:
2h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).
Average sunshine days
Grand Marais, MI
- Average sunshine days in January:
5.8 days - Average sunshine days in February:
6.6 days - Average sunshine days in March:
12 days - Average sunshine days in April:
13 days - Average sunshine days in May:
15.3 days - Average sunshine days in June:
16.3 days
- Average sunshine days in July:
15.6 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
15.4 days - Average sunshine days in October:
11.1 days - Average sunshine days in November:
10.2 days - Average sunshine days in December:
7.6 days
The month with the most sunshine days is June (16.3 days).
The month with the least sunshine days is January (5.8 days).
Average UV index
Grand Marais, MI
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, November and December (UV index 1).
Average cloud cover
Grand Marais, MI
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility
Grand Marais, MI
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 and February (4mi).
Grand Marais, Michigan, USA
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