Monmouth (IL) monthly weather averages

Contents

Average daytime temperature

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

Monmouth average temperature chart (Celsius) Monmouth average temperature chart (Fahrenheit)
Average monthly temperatures in Monmouth (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -0.9 2 9.1 17.1 23.1 28.1 30 28.8 24.7 18.3 9.7 1.5
°F 30.4 35.5 48.4 62.8 73.6 82.6 86.1 83.8 76.5 64.9 49.5 34.7

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.

Monmouth monthly rainfall chart (mm) Monmouth monthly rainfall chart (inches)
Average monthly rainfall in Monmouth (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 40 36 73 95 99 103 113 96 97 76 61 56
inches 1.6 1.4 2.9 3.8 3.9 4.1 4.4 3.8 3.8 3 2.4 2.2
Rainy days 9 8 11 11 12 10 10 9 9 9 9 10

Average annual rainfall in Monmouth: 895.034mm (352.4 inches)

Average daily sunshine

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

Monmouth average daily sunshine chart
Average daily sunshine Monmouth
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.4 6.1 6.5 7.7 9.1 10.5 10.6 9.6 8.2 7 4.7 4.4

Day / night temperatures

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

Monmouth average minimum / maximum temperatures (Celsius) Monmouth average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Monmouth (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -10.6 -8 -1.6 4.6 10.2 15.4 17.7 16.3 12 6 -0.4 -7.3
Max °C -0.7 2.2 9.4 17.4 23.4 28.4 30.4 29.1 25.1 18.6 10 1.7
Min °F 13 17.6 29.1 40.3 50.4 59.7 63.8 61.3 53.5 42.8 31.4 18.9
Max °F 21.9 26.8 39 51.8 62.2 71.4 75.2 72.9 65.3 54.1 40.6 27

Sea temperature

The graph below shows the average sea temperature.

Monmouth average sea temperature chart (Celsius) Monmouth average sea temperature chart (Fahrenheit)
Average sea temperature around Monmouth in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.6 8.2 8.5 9.7 11.6 14.1 17.5 21 19.6 15.3 12 9.9
°F 47.4 46.7 47.4 49.4 52.8 57.4 63.6 69.8 67.2 59.5 53.7 49.8

Wind speed

The graph below shows the average wind speed.

Monmouth average winspeed by month (km/h) Monmouth average winspeed by month (mph)
Average wind speed in Monmouth (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 19 21 21 17 16 14 13 14 17 18 19
mph 12 12 13 13 11 10 9 8 9 10 11 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.

Monmouth relative humidity averages
Average relative humidity in Monmouth
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
72% 72% 69% 64% 66% 67% 71% 73% 73% 69% 72% 76%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Monmouth weather stats

Monmouth weather statistics
Hottest month: July 30°C 86°F
Driest month: February 36mm 1.4ins
Sunniest month: July 10.6hrs
Coldest month: January -0.9°C 30.4°F
Wettest month: July 113mm 4.4ins
Warmest sea: August 21°C 69.8°F
Map showing location of Monmouth (40.91143, -90.64736) Monmouth map pin © Google

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