The best times to visit Sioux Falls for ideal weather are

May 14th to September 23rd

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



Other Sioux Falls Travel Info

Weather in Sioux Falls


Average temperatures in Sioux Falls vary an incredible amount. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a fair chance of precipitation about half of the year. The area is less temperate than some — in the 32nd 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 Sioux Falls, 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 87.8°F (31°C) with temperatures rarely dropping below 62.7°F (17.1°C) at night.

Sioux Falls Temperatures (Fahrenheit)


Sioux Falls 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.

Sioux Falls Perceived Temperature (F)


Sioux Falls Perceived Temperature (C)



Average Sioux Falls 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 27.9 16.5 6
Feb 30.6 18.2 7.5
Mar 48.6 34.8 23.4
Apr 61.3 46.6 33.7
May 73.1 58.8 45.8
Jun 81.4 69 56.2
Jul 86.8 74.3 61.3
Aug 84.2 71.5 59.3
Sep 78.2 63.5 50.2
Oct 64.2 49.8 38
Nov 48.5 35.2 23.6
Dec 31.6 20.2 10.3

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan -2.3 -8.6 -14.4
Feb -0.8 -7.7 -13.6
Mar 9.2 1.6 -4.8
Apr 16.3 8.1 0.9
May 22.8 14.9 7.7
Jun 27.4 20.6 13.4
Jul 30.4 23.5 16.3
Aug 29 21.9 15.2
Sep 25.7 17.5 10.1
Oct 17.9 9.9 3.3
Nov 9.2 1.8 -4.7
Dec -0.2 -6.6 -12.1



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Sioux Falls are November, 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 January. For example, on the week of January 8th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late May to early June with an average of 2 days of significant precipitation the week of May 28th.

When can you find snow in Sioux Falls? Weather stations report large amounts of snow likely to be deepest around February, especially close to early to mid February. The best time to ski (if at all) in Sioux Falls is often around around February 12th 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 Sioux Falls.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 8% 5.5 0.6
Feb 10% 5.9 1
Mar 10% 3.2 1
Apr 18% 2.2 2.5
May 26% 0 4
Jun 29% 0 5.6
Jul 14% 0 3.5
Aug 22% 0 4.2
Sep 18% 0 2.4
Oct 17% 1.2 3
Nov 6% 2.3 0.7
Dec 14% 4.4 1.4

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 8 14 1.5
Feb 10 15 2.5
Mar 10 8.1 2.5
Apr 18 5.6 6.4
May 26 0 10.2
Jun 29 0 14.2
Jul 14 0 8.9
Aug 22 0 10.7
Sep 18 0 6.1
Oct 17 3 7.6
Nov 6 5.8 1.8
Dec 14 11.2 3.6


Humidity and Wind

Sioux Falls has some high humidity months, with other comfortably humid months. The least humid month is April (51.2% relative humidity), and the most humid month is December (68.2%).

Wind in Sioux Falls is usually moderate. The windiest month is April, followed by May and March. April’s average wind speed of around 10.3 knots (11.9 MPH or 19.2 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 April where average top sustained speeds reach 18.9 knots, which is considered a fresh breeze.

Relative Humidity (%)

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

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 8.6 Gentle breeze 16.5 Significant breeze
Feb 8.5 Gentle breeze 15.9 Significant breeze
Mar 9.3 Gentle breeze 16.9 Significant breeze
Apr 10.3 Gentle breeze 18.6 Strong breeze
May 9.4 Gentle breeze 17.8 Significant breeze
Jun 7.8 Gentle breeze 16.4 Significant breeze
Jul 7.2 Gentle breeze 14.7 Significant breeze
Aug 6.8 Light breeze 14 Significant breeze
Sep 7.6 Gentle breeze 14.8 Significant breeze
Oct 8.4 Gentle breeze 15.8 Significant breeze
Nov 8.6 Gentle breeze 16.2 Significant breeze
Dec 8.1 Gentle breeze 15.2 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 65.1%
Feb 64.1%
Mar 60.9%
Apr 51.2%
May 53.7%
Jun 58.8%
Jul 59.6%
Aug 64.4%
Sep 58.5%
Oct 56%
Nov 57.4%
Dec 68.2%


Is it Safe to Travel to Sioux Falls?

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 Sioux Falls, SD, US is June, followed by May 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 Sioux Falls 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 48.4 in November means 48.4% of the tourists vs. June.



Overall Sioux Falls Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 77.9°F (25.5°C) and 29.4°F (-1.4°C) with far warmer temperatures in the later months. Rain is somewhat common with 3 to 8 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 4 to 9 days of precipitation per month. June – August is the busiest season for tourism in Sioux Falls, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 79.8°F (26.6°C) and 40.1°F (4.5°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 2 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 Sioux Falls to be enjoyable for warm weather travelers. The average high during this season is between 33.6°F (0.9°C) and 27°F (-2.8°C). On average, it rains or snows a smalll amount: 2 to 4 times per month. These times of year are fairly slow with tourists.


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