Marengo (IA) monthly weather averages

Contents

Average daytime temperature

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

Marengo average temperature chart (Celsius) Marengo average temperature chart (Fahrenheit)
Average monthly temperatures in Marengo (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -2.5 0.4 7.5 15.8 22.2 27.3 29.4 28 23.7 17.3 8.4 -0.1
°F 27.4 32.7 45.5 60.4 72 81.1 84.9 82.3 74.7 63.1 47 31.9

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.

Marengo monthly rainfall chart (mm) Marengo monthly rainfall chart (inches)
Average monthly rainfall in Marengo (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 26 27 63 89 98 115 110 114 97 64 51 39
inches 1 1 2.5 3.5 3.9 4.5 4.3 4.5 3.8 2.5 2 1.5
Rainy days 8 7 10 11 11 10 10 9 9 8 8 9

Average annual rainfall in Marengo: 842.667mm (331.8 inches)

Average daily sunshine

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

Marengo average daily sunshine chart
Average daily sunshine Marengo
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.6 6.8 7.2 8.2 9.7 10.8 11.1 10.1 8.3 7.3 5 4.6

Day / night temperatures

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

Marengo average minimum / maximum temperatures (Celsius) Marengo average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Marengo (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -12.5 -9.9 -3 3.7 9.9 15.2 17.7 16.2 11.6 5 -1.6 -9.2
Max °C -2.3 0.7 7.8 16.1 22.6 27.6 29.7 28.3 24 17.6 8.6 0.2
Min °F 9.5 14.3 26.7 38.7 49.7 59.4 63.9 61.1 52.9 41 29.1 15.5
Max °F 18.7 23.7 36.3 49.8 61.2 70.5 74.7 72 64 52.3 38.3 23.9

Sea temperature

The graph below shows the average sea temperature.

Marengo average sea temperature chart (Celsius) Marengo average sea temperature chart (Fahrenheit)
Average sea temperature around Marengo in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.9 8.6 9.1 10.3 12.2 14.5 17.2 20.1 18.9 15.3 12.2 10.1
°F 48 47.5 48.4 50.6 53.9 58.1 62.9 68.1 66.1 59.5 53.9 50.2

Wind speed

The graph below shows the average wind speed.

Marengo average winspeed by month (km/h) Marengo average winspeed by month (mph)
Average wind speed in Marengo (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 19 21 21 18 17 14 14 16 17 19 19
mph 12 12 13 13 11 10 9 9 10 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.

Marengo relative humidity averages
Average relative humidity in Marengo
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
72% 72% 70% 65% 66% 67% 71% 73% 73% 69% 73% 76%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Marengo weather stats

Marengo weather statistics
Hottest month: July 29.4°C 84.9°F
Driest month: January 26mm 1ins
Sunniest month: July 11.1hrs
Coldest month: January -2.5°C 27.5°F
Wettest month: June 115mm 4.5ins
Warmest sea: August 20.1°C 68.2°F
Map showing location of Marengo (41.79806, -92.07074) Marengo map pin © Google

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