The best times to visit Shelby for ideal weather are

June 18th 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 Shelby Travel Info

Weather in Shelby


Average temperatures in Shelby vary an incredible amount. Considering humidity, temperatures feel cold for most of the year with a very low chance of rain or snow throughout 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 Shelby, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 84.8°F (29.3°C) with temperatures rarely dropping below 53.5°F (11.9°C) at night.

Shelby Temperatures (Fahrenheit)


Shelby Temperatures (Celsius)


“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.

Shelby Perceived Temperature (F)


Shelby Perceived Temperature (C)



Average Shelby 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 34.3 23.3 13.7
Feb 34.9 24.3 15.4
Mar 47.8 34.8 24.7
Apr 52.5 39.2 28.3
May 63 49.2 37.3
Jun 71.7 57.9 44.4
Jul 82.7 66.7 51
Aug 80.1 63.8 48.4
Sep 72.8 55.5 41.3
Oct 54.6 42.2 32.2
Nov 47.2 36.2 27.1
Dec 26.9 16.7 7.4

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 1.3 -4.8 -10.2
Feb 1.6 -4.3 -9.2
Mar 8.8 1.6 -4.1
Apr 11.4 4 -2.1
May 17.2 9.6 2.9
Jun 22.1 14.4 6.9
Jul 28.2 19.3 10.6
Aug 26.7 17.7 9.1
Sep 22.7 13.1 5.2
Oct 12.6 5.7 0.1
Nov 8.4 2.3 -2.7
Dec -2.8 -8.5 -13.7



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Shelby are January, December, 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 January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late May with an average of 2 days of significant precipitation the week of May 21st.

When can you find snow in Shelby? Weather stations report large amounts of snow likely to be deepest around May, especially close to early May. The best time to ski (if at all) in Shelby is often around around April 30th when fresh powder is deepest. 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 Shelby.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 0% 2.8 0.1
Feb 1% 2.7 0.1
Mar 1% 1.7 0.2
Apr 3% 2.1 0.3
May 10% 4.1 1.9
Jun 12% 0 1.9
Jul 10% 0 1.1
Aug 5% 0 0.4
Sep 12% 0 1.7
Oct 3% 2.1 0.4
Nov 1% 1.2 0.1
Dec 0% 2.7 0

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 0 7.1 0.3
Feb 1 6.9 0.3
Mar 1 4.3 0.5
Apr 3 5.3 0.8
May 10 10.4 4.8
Jun 12 0 4.8
Jul 10 0 2.8
Aug 5 0 1
Sep 12 0 4.3
Oct 3 5.3 1
Nov 1 3 0.3
Dec 0 6.9 0


Humidity and Wind

Shelby has some humid months, and slightly dry months in the opposite season. The least humid month is August (36.6% relative humidity), and the most humid month is February (62.1%).

Wind in Shelby is usually moderate. The windiest month is November, followed by January and March. November’s average wind speed of around 13.2 knots (15.2 MPH or 24.5 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early January where average top sustained speeds reach 27.6 knots, which is considered a strong breeze.

Relative Humidity (%)

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

Avg. Relative Humidity


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

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 13 Significant breeze 24 Very strong breeze
Feb 9.7 Gentle breeze 17.9 Strong breeze
Mar 12.4 Significant breeze 22.6 Very strong breeze
Apr 11.9 Significant breeze 21.8 Strong breeze
May 10.7 Gentle breeze 20.4 Very strong breeze
Jun 9.9 Gentle breeze 19.5 Strong breeze
Jul 8.3 Gentle breeze 18.2 Very strong breeze
Aug 8.7 Gentle breeze 18.8 Strong breeze
Sep 8.7 Gentle breeze 18.4 Very strong breeze
Oct 11.5 Significant breeze 21.9 Strong breeze
Nov 13.2 Significant breeze 24.1 Very strong breeze
Dec 12 Significant breeze 22.6 Very strong breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 53.8%
Feb 62.1%
Mar 45%
Apr 44.1%
May 45.3%
Jun 41.5%
Jul 37.2%
Aug 36.6%
Sep 38.7%
Oct 46.8%
Nov 43.6%
Dec 56.9%


Is it Safe to Travel to Shelby?

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 Shelby, MT, US is July, followed by June and August. 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 Shelby in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

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 somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 46.8 in December means 46.8% of the tourists vs. July.



Overall Shelby Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 72.1°F (22.3°C) and 41.5°F (5.3°C) with warmer temperatures in the later months. Rain is rare with 0 to 3 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 comfortably cool weather with high temperatures that are comfortable. These months see the most precipitation with 1 to 3 days of precipitation per month. June – August is the busiest season for tourism in Shelby, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 77.1°F (25.1°C) and 39.8°F (4.3°C), which will feel chilly given the humidity and wind. It rains or snows a normal amount: 0 to 4 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Winter (December through February)

Weather is far too cold this time of year in Shelby to be enjoyable for warm weather travelers. The average high during this season is between 41.5°F (5.3°C) and 24°F (-4.4°C). On average, it rains or snows a insignificant amount: consistently 0 times per month. These times of year are the slowest with tourists.


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