Mason City (IA) monthly weather averages

Contents

Average daytime temperature

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

Mason City average temperature chart (Celsius) Mason City average temperature chart (Fahrenheit)
Average monthly temperatures in Mason City (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -5.3 -2.2 4.7 13.9 21.3 26.5 28.5 27 22.4 15.9 6.2 -2.9
°F 22.4 28 40.5 57 70.3 79.7 83.3 80.7 72.3 60.6 43.2 26.8

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.

Mason City monthly rainfall chart (mm) Mason City monthly rainfall chart (inches)
Average monthly rainfall in Mason City (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 21 22 50 78 103 119 110 98 85 57 39 28
inches 0.8 0.9 2 3.1 4.1 4.7 4.3 3.8 3.4 2.2 1.5 1.1
Rainy days 8 7 10 11 11 11 10 9 10 8 8 9

Average annual rainfall in Mason City: 760.133mm (299.3 inches)

Average daily sunshine

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

Mason City average daily sunshine chart
Average daily sunshine Mason City
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.7 6.9 7.4 8.4 9.7 10.9 11.3 10 8.3 7 4.7 4.4

Day / night temperatures

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

Mason City average minimum / maximum temperatures (Celsius) Mason City average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Mason City (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -15.5 -12.3 -5 2.2 8.4 13.6 16.2 14.7 9.7 3.4 -3.9 -12.2
Max °C -5.1 -2 5 14.2 21.6 26.8 28.8 27.4 22.7 16.2 6.5 -2.7
Min °F 4.1 10 23.1 36 47.1 56.5 61.2 58.4 49.5 38.1 25.1 10.1
Max °F 13.5 19.2 32 46.8 59 68.4 72.5 69.8 61.2 49.6 34.3 18.7

Sea temperature

The graph below shows the average sea temperature.

Mason City average sea temperature chart (Celsius) Mason City average sea temperature chart (Fahrenheit)
Average sea temperature around Mason City in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.8 7.6 8 9.1 10.8 13 15.6 18.6 17.5 14 10.9 8.9
°F 46.1 45.6 46.5 48.5 51.4 55.4 60.2 65.5 63.5 57.1 51.6 48

Wind speed

The graph below shows the average wind speed.

Mason City average winspeed by month (km/h) Mason City average winspeed by month (mph)
Average wind speed in Mason City (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 21 21 22 23 20 18 16 16 17 19 20 20
mph 13 13 14 14 13 11 10 10 11 12 13 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.

Mason City relative humidity averages
Average relative humidity in Mason City
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
73% 73% 72% 65% 65% 67% 70% 73% 73% 69% 74% 77%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Mason City weather stats

Mason City weather statistics
Hottest month: July 28.5°C 83.3°F
Driest month: January 21mm 0.8ins
Sunniest month: July 11.3hrs
Coldest month: January -5.3°C 22.5°F
Wettest month: June 119mm 4.7ins
Warmest sea: August 18.6°C 65.5°F
Map showing location of Mason City (43.15357, -93.20104) Mason City map pin © Google

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