The best times to visit Fort Pierre for ideal weather are

May 14th to July 22nd

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



Other Fort Pierre Travel Info

Weather in Fort Pierre


Average temperatures in Fort Pierre 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 less temperate than some — in the 35th 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 Fort Pierre, 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 91.1°F (32.8°C) with temperatures rarely dropping below 63.3°F (17.4°C) at night.

Fort Pierre Temperatures (Fahrenheit)


Fort Pierre 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.

Fort Pierre Perceived Temperature (F)


Fort Pierre Perceived Temperature (C)



Average Fort Pierre 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 29.8 18.3 9.4
Feb 29.4 18.7 10.3
Mar 49.6 35.4 25.7
Apr 60.3 45.6 34.3
May 70.8 56.8 45.4
Jun 79.1 66.5 55.7
Jul 89.6 74.6 61.6
Aug 86.9 72.4 60.9
Sep 79.4 63.8 51.8
Oct 57.9 46.2 36.8
Nov 49.5 36.9 27.1
Dec 27.2 17.3 8.9

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan -1.2 -7.6 -12.6
Feb -1.4 -7.4 -12.1
Mar 9.8 1.9 -3.5
Apr 15.7 7.6 1.3
May 21.6 13.8 7.4
Jun 26.2 19.2 13.2
Jul 32 23.7 16.4
Aug 30.5 22.4 16.1
Sep 26.3 17.7 11
Oct 14.4 7.9 2.7
Nov 9.7 2.7 -2.7
Dec -2.7 -8.2 -12.8



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Fort Pierre are January, November, and then December. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid January. For example, on the week of January 15th 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 Fort Pierre? 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 Fort Pierre.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 4% 0 0.3
Feb 10% 0 0.9
Mar 11% 0 1.5
Apr 20% 0 1.8
May 23% 0 3.2
Jun 26% 0 4.7
Jul 15% 0 2
Aug 21% 0 2.8
Sep 12% 0 1.5
Oct 22% 0 4
Nov 6% 0 0.4
Dec 9% 0 1.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 4 0 0.8
Feb 10 0 2.3
Mar 11 0 3.8
Apr 20 0 4.6
May 23 0 8.1
Jun 26 0 11.9
Jul 15 0 5.1
Aug 21 0 7.1
Sep 12 0 3.8
Oct 22 0 10.2
Nov 6 0 1
Dec 9 0 2.8


Humidity and Wind

Fort Pierre has some very humid months, with other moderately humid months on the other side of the year. The least humid month is July (49.8% relative humidity), and the most humid month is December (70.3%).

Wind in Fort Pierre is usually moderate. The windiest month is April, followed by May and March. April’s average wind speed of around 10.7 knots (12.3 MPH or 19.7 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late March where average top sustained speeds reach 22.1 knots, which is considered a strong breeze.

Relative Humidity (%)

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

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 9.5 Gentle breeze 17.7 Strong breeze
Feb 8.9 Gentle breeze 16.6 Significant breeze
Mar 10.1 Gentle breeze 18.6 Strong breeze
Apr 10.7 Gentle breeze 18.9 Strong breeze
May 10.5 Gentle breeze 19.4 Strong breeze
Jun 8.5 Gentle breeze 17.3 Strong breeze
Jul 8.2 Gentle breeze 16.9 Strong breeze
Aug 8.7 Gentle breeze 17.7 Strong breeze
Sep 9.7 Gentle breeze 17.8 Strong breeze
Oct 9.8 Gentle breeze 17.8 Strong breeze
Nov 8.8 Gentle breeze 16.1 Strong breeze
Dec 9.5 Gentle breeze 16.9 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 65%
Feb 67.1%
Mar 60.9%
Apr 50.8%
May 55.5%
Jun 60.7%
Jul 49.8%
Aug 54.4%
Sep 51.6%
Oct 60.6%
Nov 56.4%
Dec 70.3%


Is it Safe to Travel to Fort Pierre?

Our best data indicates this area is generally safe. As of Dec 04, 2023 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 Dec 04, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Fort Pierre, SD, US is July, followed by August and February. 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 Fort Pierre 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

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 42.4 in November means 42.4% of the tourists vs. July.



Overall Fort Pierre Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 76.2°F (24.6°C) and 33.1°F (0.6°C) with far warmer temperatures in the later months. Rain is somewhat common with 3 to 7 days of significant precipitation per month. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the most precipitation with 5 to 8 days of precipitation per month. June – August is the busiest season for tourism in Fort Pierre, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 82.5°F (28.1°C) and 40.3°F (4.6°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 2 to 7 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 Fort Pierre to be enjoyable for warm weather travelers. The average high during this season is between 35.2°F (1.8°C) and 25.7°F (-3.5°C). On average, it rains or snows a smalll amount: 1 to 3 times per month. These times of year are the second busiest with tourists.


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