Yankton (SD) monthly weather averages

Contents

Average daytime temperature

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

Yankton average temperature chart (Celsius) Yankton average temperature chart (Fahrenheit)
Average monthly temperatures in Yankton (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -3.2 0.3 6.7 15.7 22.4 27.9 30.7 29.2 24.1 17.9 8.2 -0.2
°F 26.2 32.5 44 60.3 72.3 82.1 87.3 84.5 75.5 64.3 46.7 31.7

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.

Yankton monthly rainfall chart (mm) Yankton monthly rainfall chart (inches)
Average monthly rainfall in Yankton (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 9 15 39 58 89 99 77 73 59 38 25 14
inches 0.4 0.6 1.5 2.3 3.5 3.9 3 2.9 2.3 1.5 1 0.6
Rainy days 6 6 8 9 11 10 9 8 8 6 6 6

Average annual rainfall in Yankton: 539.8mm (212.5 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Yankton

Yankton average daily sunshine chart
Average daily sunshine Yankton
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.4 6.9 7.8 8.8 10 11.5 12.1 10.8 9 7.6 5.7 5.3

Day / night temperatures

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

Yankton average minimum / maximum temperatures (Celsius) Yankton average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Yankton (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -15.3 -11.8 -5.4 1.6 8.3 13.6 16.8 15.3 9.5 3.3 -4.1 -11.3
Max °C -3 0.6 7 16.1 22.8 28.2 31.1 29.5 24.5 18.3 8.5 0.1
Min °F 4.6 10.9 22.4 34.8 46.9 56.5 62.2 59.5 49.1 37.9 24.7 11.7
Max °F 15.6 21.9 33.4 47.8 59.9 69.6 75 72.3 62.6 51.4 36 21.9

Sea temperature

The graph below shows the average sea temperature.

Yankton average sea temperature chart (Celsius) Yankton average sea temperature chart (Fahrenheit)
Average sea temperature around Yankton in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.8 8.5 9 10 11.6 13.7 16.2 18.8 17.7 14.5 11.7 9.7
°F 47.8 47.4 48.1 50 52.8 56.7 61.2 65.8 63.8 58.1 53 49.5

Wind speed

The graph below shows the average wind speed.

Yankton average winspeed by month (km/h) Yankton average winspeed by month (mph)
Average wind speed in Yankton (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 19 21 22 20 18 17 17 18 18 19 19
mph 12 12 13 14 13 11 10 10 11 11 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.

Yankton relative humidity averages
Average relative humidity in Yankton
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
70% 72% 70% 63% 63% 64% 66% 68% 68% 65% 71% 74%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Yankton weather stats

Yankton weather statistics
Hottest month: July 30.7°C 87.3°F
Driest month: January 9mm 0.4ins
Sunniest month: July 12.1hrs
Coldest month: January -3.2°C 26.2°F
Wettest month: June 99mm 3.9ins
Warmest sea: August 18.8°C 65.8°F
Map showing location of Yankton (42.87111, -97.39728) Yankton map pin © Google

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