Freeport (IL) monthly weather averages

Contents

Average daytime temperature

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

Freeport average temperature chart (Celsius) Freeport average temperature chart (Fahrenheit)
Average monthly temperatures in Freeport (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -3.3 -0.5 6.4 14.4 21.1 26.5 28.6 27.1 22.9 16.4 7.8 -0.5
°F 26.1 31.1 43.5 58 70 79.6 83.4 80.8 73.3 61.6 46 31

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.

Freeport monthly rainfall chart (mm) Freeport monthly rainfall chart (inches)
Average monthly rainfall in Freeport (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 34 31 62 89 96 114 102 104 96 70 63 50
inches 1.4 1.2 2.5 3.5 3.8 4.5 4 4.1 3.8 2.8 2.5 2
Rainy days 10 8 11 12 11 10 10 9 9 9 10 10

Average annual rainfall in Freeport: 863.567mm (340 inches)

Average daily sunshine

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

Freeport average daily sunshine chart
Average daily sunshine Freeport
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.3 6.3 6.8 7.8 9.6 10.8 10.7 9.8 8 6.8 4.5 4.2

Day / night temperatures

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

Freeport average minimum / maximum temperatures (Celsius) Freeport average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Freeport (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -13.8 -11.4 -4.3 2.1 8 12.8 15.5 14 9.4 3.1 -2.9 -10.1
Max °C -3 -0.3 6.7 14.8 21.5 26.8 28.9 27.5 23.3 16.8 8.1 -0.3
Min °F 7.2 11.6 24.4 35.7 46.3 55 59.9 57.1 48.8 37.5 26.9 13.8
Max °F 16.9 21.6 34.2 47.1 58.5 67.6 72 69.3 61.3 49.8 36.7 22.6

Sea temperature

The graph below shows the average sea temperature.

Freeport average sea temperature chart (Celsius) Freeport average sea temperature chart (Fahrenheit)
Average sea temperature around Freeport in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6 5.5 5.5 6.3 8.1 11.1 15.8 19.8 18.1 13.3 9.7 7.3
°F 42.8 41.9 42 43.4 46.5 52 60.5 67.7 64.7 55.9 49.4 45.2

Wind speed

The graph below shows the average wind speed.

Freeport average winspeed by month (km/h) Freeport average winspeed by month (mph)
Average wind speed in Freeport (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 18 18 20 20 17 16 14 13 14 17 18 18
mph 11 11 12 13 11 10 9 8 9 10 11 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.

Freeport relative humidity averages
Average relative humidity in Freeport
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
74% 73% 71% 66% 65% 67% 71% 74% 75% 71% 75% 78%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Freeport weather stats

Freeport weather statistics
Hottest month: July 28.6°C 83.5°F
Driest month: February 31mm 1.2ins
Sunniest month: July 10.7hrs
Coldest month: January -3.3°C 26.1°F
Wettest month: June 114mm 4.5ins
Warmest sea: August 19.8°C 67.6°F
Map showing location of Freeport (42.29669, -89.62123) Freeport map pin © Google

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