Sioux Falls (SD) monthly weather averages

  • Average daytime temperature

    The bar chart below shows the average monthly peak daytime temperatures at Sioux Falls

    Sioux Falls average temperature chart
    Average monthly temperatures in Sioux Falls (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C -4.6 -1.5 5.5 14.8 21.4 26.7 29.9 28.3 22.7 16 6.1 -2.5
    °F 23.8 29.3 42 58.6 70.5 80.1 85.8 82.9 72.8 60.7 43 27.5

    Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

  • Average rainfall & rainy days

    The graph below shows the average rainfall and number of rainy days per month.

    Average monthly rainfall in Sioux Falls (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 13 17 41 63 79 92 71 74 74 43 28 17
    inches 0.5 0.7 1.6 2.5 3.1 3.6 2.8 2.9 2.9 1.7 1.1 0.7
    Rainy days 7 7 9 10 11 11 10 9 9 6 7 6
  • Average daily sunshine

    The bar chart below shows the average daily sunshine hours in Sioux Falls

    Average daily sunshine Sioux Falls
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 6.2 6.8 7.7 8.6 9.9 11.4 11.9 10.7 8.8 7.3 5.3 5
  • Day / night temperatures

    The graph below shows the daily range of temperatures for each month.

    Maximum and minimum daily temperatures in Sioux Falls (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C -16.1 -12.6 -5.4 1.5 7.7 13.4 16.6 15 9.2 2.1 -5.2 -13.2
    Max °C -4.3 -1.3 5.8 15.1 21.7 27.1 30.2 28.6 23 16.3 6.4 -2.3
    Min °F 3 9.4 22.3 34.7 45.9 56 61.9 59 48.6 35.8 22.6 8.3
    Max °F 13.6 19.6 32.4 46.9 58.5 68.4 74.1 71.2 61 48.6 33.1 18.1
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Sioux Falls in degrees centigrade and fahrenheit
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 8.1 7.9 8.3 9.3 10.8 13 15.6 18.3 17.2 13.9 10.9 9
    °F 46.6 46.2 46.9 48.7 51.5 55.4 60 65 62.9 57 51.7 48.2
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in Sioux Falls (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 19 19 22 23 21 19 17 17 18 19 19 19
    mph 12 12 14 14 13 12 11 11 11 12 12 12

    A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

  • Relative humidity

    The graph below shows the average relative humidity.

    Average relative humidity in Sioux Falls
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    72% 73% 72% 65% 64% 65% 65% 68% 70% 67% 73% 76%

Other monthly averages

UV index

Sioux Falls weather stats

Sioux Falls weather statistics
Hottest month: July 29.9°C 85.8°F
Driest month: January 13mm 0.5ins
Sunniest month: July 11.9hrs
Coldest month: January -4.6°C 23.7°F
Wettest month: June 92mm 3.6ins
Warmest sea: August 18.3°C 64.9°F
Map showing location of Sioux Falls (43.54997, -96.70033)

Locations nearby

Top United States locations

Change units