The best times to visit Iron Mountain for ideal weather are

May 28th to September 16th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

 

 


Other Iron Mountain Travel Info

Weather in Iron Mountain

Temperature

Average temperatures in Iron Mountain vary an incredible amount. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a low chance of precipitation most of the year. The area is somewhat temperate — in the 41st percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Iron Mountain, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 82.5°F (28.1°C) with temperatures rarely dropping below 56.5°F (13.6°C) at night.

Iron Mountain Temperatures (Fahrenheit)

Key
High
Average
Low

Iron Mountain Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Iron Mountain Perceived Temperature (F)

Key
High
Average
Low

Iron Mountain Perceived Temperature (C)

Key
High
Average
Low

 

Average Iron Mountain Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 23.9 15 6.1
Feb 26.3 15.9 5.9
Mar 41.4 29.2 18.3
Apr 53.9 40.7 28.9
May 69.3 54.7 41
Jun 76.7 63.4 50.6
Jul 81.7 68.3 55.2
Aug 79.8 66.4 53.9
Sep 71.1 58 46.2
Oct 56.7 45.7 36.1
Nov 42.2 33.1 24.8
Dec 28.3 20.7 12.7

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan -4.5 -9.4 -14.4
Feb -3.2 -8.9 -14.5
Mar 5.2 -1.6 -7.6
Apr 12.2 4.8 -1.7
May 20.7 12.6 5
Jun 24.8 17.4 10.3
Jul 27.6 20.2 12.9
Aug 26.6 19.1 12.2
Sep 21.7 14.4 7.9
Oct 13.7 7.6 2.3
Nov 5.7 0.6 -4
Dec -2.1 -6.3 -10.7

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Iron Mountain are February, January, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid February. For example, on the week of February 12th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early September with an average of 2 days of significant precipitation the week of September 3rd.

When can you find snow in Iron Mountain? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Iron Mountain.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Iron Mountain (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 3% 0 0.3
Feb 2% 0 0.1
Mar 5% 0 0.5
Apr 16% 0 1.4
May 16% 0 1.9
Jun 20% 0 2.8
Jul 16% 0 2
Aug 16% 0 1.9
Sep 17% 0 2.8
Oct 14% 0 1.9
Nov 9% 0 0.8
Dec 6% 0 0.6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 3 0 0.8
Feb 2 0 0.3
Mar 5 0 1.3
Apr 16 0 3.6
May 16 0 4.8
Jun 20 0 7.1
Jul 16 0 5.1
Aug 16 0 4.8
Sep 17 0 7.1
Oct 14 0 4.8
Nov 9 0 2
Dec 6 0 1.5

 

Humidity and Wind

Iron Mountain has some slightly muggy months, with moderately humid months on the other side of the year. The least humid month is May (47.7% relative humidity), and the most humid month is December (68.4%).

Wind in Iron Mountain is usually calm. The windiest month is April, followed by February and May. April’s average wind speed of around 6.8 knots (7.8 MPH or 12.5 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid May where average top sustained speeds reach 15.1 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Iron Mountain.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 6.3 Light breeze 12.6 Significant breeze
Feb 6.4 Light breeze 13.1 Significant breeze
Mar 6.1 Light breeze 12.9 Significant breeze
Apr 6.8 Light breeze 14.3 Significant breeze
May 6.4 Light breeze 13.8 Significant breeze
Jun 5.3 Light breeze 12.3 Significant breeze
Jul 5.1 Light breeze 12.2 Significant breeze
Aug 4.7 Light breeze 11.5 Significant breeze
Sep 5.1 Light breeze 12.4 Significant breeze
Oct 5.7 Light breeze 12.5 Significant breeze
Nov 6.1 Light breeze 12.4 Significant breeze
Dec 5.7 Light breeze 11.8 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 60.8%
Feb 56.6%
Mar 52.2%
Apr 48.3%
May 47.7%
Jun 58%
Jul 58.3%
Aug 60.7%
Sep 64.8%
Oct 64.5%
Nov 64.8%
Dec 68.4%

 

Is it Safe to Travel to Iron Mountain?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Iron Mountain, MI, US is July, followed by June and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Iron Mountain in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 38.2 in November means 38.2% of the tourists vs. July.

 

 

Overall Iron Mountain Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 75.6°F (24.2°C) and 27.7°F (-2.4°C) with far warmer temperatures in the later months. Rain is somewhat common with 2 to 5 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see the most precipitation with 5 to 6 days of precipitation per month. June – August is the busiest season for tourism in Iron Mountain, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 74.6°F (23.7°C) and 32.8°F (0.4°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 3 to 5 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is far too cold this time of year in Iron Mountain to be enjoyable for warm weather travelers. The average high during this season is between 28.6°F (-1.9°C) and 22.5°F (-5.3°C). On average, it rains or snows a smalll amount: 0 to 2 times per month. These times of year are fairly slow with tourists.

 

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