Newton (IL) monthly weather averages

Average daytime temperature

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

Newton average temperature chart (Celsius) Newton average temperature chart (Fahrenheit)
Average monthly temperatures in Newton (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 1.9 4.6 11.3 18.2 23.8 28.8 30.5 29.4 26.1 19.6 11.8 4.6
°F 35.4 40.4 52.3 64.7 74.8 83.8 86.9 84.9 79 67.3 53.2 40.3

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.

Newton monthly rainfall chart (mm) Newton monthly rainfall chart (inches)
Average monthly rainfall in Newton (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 63 63 100 103 109 95 99 81 79 74 100 85
inches 2.5 2.5 3.9 4.1 4.3 3.7 3.9 3.2 3.1 2.9 3.9 3.4
Rainy days 10 9 12 12 11 9 9 8 8 8 10 11

Average annual rainfall in Newton: 1000.034mm (393.7 inches)

Average daily sunshine

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

Newton average daily sunshine chart
Average daily sunshine Newton
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.2 5.8 6.7 8.1 9.6 11.1 11 10.2 8.8 7.5 5 4.4

Day / night temperatures

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

Newton average minimum / maximum temperatures (Celsius) Newton average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Newton (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -7.9 -5.7 0.5 6.4 11.8 16.7 18.8 17.5 13.4 6.9 1.6 -4.5
Max °C 2.1 4.9 11.6 18.5 24.1 29.1 30.8 29.7 26.4 19.9 12.1 4.9
Min °F 17.8 21.7 32.8 43.4 53.2 62.1 65.8 63.5 56.1 44.4 34.8 24
Max °F 26.8 31.3 42.8 54.3 64.2 73.2 76.6 74.5 67.8 56.1 44.2 32.4

Sea temperature

The graph below shows the average sea temperature.

Newton average sea temperature chart (Celsius) Newton average sea temperature chart (Fahrenheit)
Average sea temperature around Newton in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.6 9.1 9.4 10.8 13.2 16.7 20.6 23.2 21.6 17.2 13.6 11.2
°F 49.3 48.3 48.9 51.4 55.8 62.1 69.2 73.7 70.9 63 56.5 52.1

Wind speed

The graph below shows the average wind speed.

Newton average winspeed by month (km/h) Newton average winspeed by month (mph)
Average wind speed in Newton (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 18 18 19 18 16 14 12 12 13 14 17 17
mph 11 11 12 11 10 9 7 7 8 9 10 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.

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

Other monthly averages

UV index Best time to go?

Newton weather stats

Newton weather statistics
Hottest month: July 30.5°C 86.9°F
Driest month: February 63mm 2.5ins
Sunniest month: July 11hrs
Coldest month: January 1.9°C 35.4°F
Wettest month: May 109mm 4.3ins
Warmest sea: August 23.2°C 73.8°F
Map showing location of Newton (38.99088, -88.16254) Newton map pin © Google

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