Rock Rapids (IA) monthly weather averages

Average daytime temperature

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

Rock Rapids average temperature chart (Celsius) Rock Rapids average temperature chart (Fahrenheit)
Average monthly temperatures in Rock Rapids (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -4.5 -1.3 5.6 14.9 22.1 27.2 29.9 28.3 23 16.4 6.4 -2.3
°F 23.9 29.7 42 58.9 71.7 81 85.9 82.9 73.4 61.5 43.5 27.9

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.

Rock Rapids monthly rainfall chart (mm) Rock Rapids monthly rainfall chart (inches)
Average monthly rainfall in Rock Rapids (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 12 18 43 62 79 104 84 93 73 46 31 20
inches 0.5 0.7 1.7 2.4 3.1 4.1 3.3 3.7 2.9 1.8 1.2 0.8
Rainy days 7 7 9 10 11 11 10 9 9 7 7 7

Average annual rainfall in Rock Rapids: 612.067mm (241 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Rock Rapids

Rock Rapids average daily sunshine chart
Average daily sunshine Rock Rapids
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.1 6.6 7.5 8.5 9.7 11.3 11.8 10.5 8.6 7.2 5.2 4.9

Day / night temperatures

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

Rock Rapids average minimum / maximum temperatures (Celsius) Rock Rapids average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Rock Rapids (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -16.6 -13.2 -6.1 1.4 8 13.7 16.4 14.6 8.9 1.9 -5.3 -13.4
Max °C -4.2 -1 5.9 15.3 22.4 27.6 30.3 28.6 23.4 16.8 6.7 -2
Min °F 2.1 8.2 21.1 34.4 46.4 56.6 61.4 58.3 47.9 35.3 22.6 7.9
Max °F 13.3 19.2 31.8 46.9 59.4 69.1 73.9 70.9 61 48.7 33.3 18.1

Sea temperature

The graph below shows the average sea temperature.

Rock Rapids average sea temperature chart (Celsius) Rock Rapids average sea temperature chart (Fahrenheit)
Average sea temperature around Rock Rapids 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.

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

Rock Rapids relative humidity averages
Average relative humidity in Rock Rapids
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
72% 72% 71% 64% 63% 66% 67% 70% 71% 67% 73% 76%

Other monthly averages

UV index Best time to go?

Rock Rapids weather stats

Rock Rapids weather statistics
Hottest month: July 29.9°C 85.8°F
Driest month: January 12mm 0.5ins
Sunniest month: July 11.8hrs
Coldest month: January -4.5°C 23.9°F
Wettest month: June 104mm 4.1ins
Warmest sea: August 18.3°C 64.9°F
Map showing location of Rock Rapids (43.42719, -96.17586) Rock Rapids map pin © Google

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