Sioux City (IA) monthly weather averages

Contents

Average daytime temperature

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

Sioux City average temperature chart (Celsius) Sioux City average temperature chart (Fahrenheit)
Average monthly temperatures in Sioux City (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -2.7 0.5 7.4 16.5 22.7 27.7 30.2 28.5 23.7 17.6 7.9 -0.8
°F 27.2 33 45.4 61.7 72.9 81.9 86.4 83.3 74.6 63.7 46.2 30.5

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.

Sioux City monthly rainfall chart (mm) Sioux City monthly rainfall chart (inches)
Average monthly rainfall in Sioux City (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 14 18 50 60 93 95 83 75 73 49 27 20
inches 0.6 0.7 2 2.3 3.7 3.7 3.3 3 2.9 1.9 1.1 0.8
Rainy days 7 6 9 10 11 10 9 9 9 7 6 7

Average annual rainfall in Sioux City: 603.3mm (237.5 inches)

Average daily sunshine

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

Sioux City average daily sunshine chart
Average daily sunshine Sioux City
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.2 6.5 7.4 8.3 9.4 11.1 11.5 10.2 8.5 7.4 5.4 5

Day / night temperatures

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

Sioux City average minimum / maximum temperatures (Celsius) Sioux City average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Sioux City (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -13.8 -10.4 -3.9 3.2 9.8 15.2 17.9 16.4 10.8 3.9 -3.4 -11
Max °C -2.4 0.8 7.7 16.9 23.1 28.1 30.5 28.8 24 18 8.2 -0.6
Min °F 7.2 13.3 25 37.7 49.6 59.3 64.2 61.5 51.4 38.9 26 12.2
Max °F 17.4 23.4 35.4 50 61.5 70.9 75.6 72.7 63.3 51.6 36.3 21.6

Sea temperature

The graph below shows the average sea temperature.

Sioux City average sea temperature chart (Celsius) Sioux City average sea temperature chart (Fahrenheit)
Average sea temperature around Sioux City in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.7 8.5 8.9 10 11.6 13.8 16.3 19 17.8 14.5 11.6 9.7
°F 47.7 47.2 48 49.9 52.9 56.8 61.4 66.1 64.1 58.2 52.9 49.5

Wind speed

The graph below shows the average wind speed.

Sioux City average winspeed by month (km/h) Sioux City average winspeed by month (mph)
Average wind speed in Sioux City (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 19 21 22 20 18 16 16 17 17 18 18
mph 12 12 13 14 12 11 10 10 10 11 11 11

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.

Sioux City relative humidity averages
Average relative humidity in Sioux City
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
72% 72% 70% 62% 62% 66% 68% 71% 71% 66% 72% 76%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Sioux City weather stats

Sioux City weather statistics
Hottest month: July 30.2°C 86.4°F
Driest month: January 14mm 0.6ins
Sunniest month: July 11.5hrs
Coldest month: January -2.7°C 27.1°F
Wettest month: June 95mm 3.7ins
Warmest sea: August 19°C 66.2°F
Map showing location of Sioux City (42.49999, -96.40031) Sioux City map pin © Google

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