Rockford (IL) monthly weather averages

Contents

Average daytime temperature

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

Rockford average temperature chart (Celsius) Rockford average temperature chart (Fahrenheit)
Average monthly temperatures in Rockford (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -3.4 -0.6 6.4 14.4 21.2 26.6 28.6 27.2 23 16.5 7.7 -0.4
°F 25.9 30.9 43.4 57.9 70.1 79.9 83.4 81 73.5 61.7 45.9 31.3

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.

Rockford monthly rainfall chart (mm) Rockford monthly rainfall chart (inches)
Average monthly rainfall in Rockford (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 33 29 61 92 91 113 104 105 97 72 64 51
inches 1.3 1.1 2.4 3.6 3.6 4.5 4.1 4.1 3.8 2.8 2.5 2
Rainy days 10 8 11 12 11 10 10 9 9 9 10 11

Average annual rainfall in Rockford: 865.667mm (340.8 inches)

Average daily sunshine

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

Rockford average daily sunshine chart
Average daily sunshine Rockford
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.2 6 6.6 7.7 9.5 10.8 10.8 9.7 8 6.6 4.4 4.1

Day / night temperatures

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

Rockford average minimum / maximum temperatures (Celsius) Rockford average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Rockford (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -12.9 -10.5 -3.6 2.5 8.3 13.9 16.6 15.3 10.7 4.4 -1.8 -9.2
Max °C -3.2 -0.4 6.6 14.7 21.5 26.9 28.9 27.5 23.4 16.8 8 -0.2
Min °F 8.9 13.2 25.5 36.5 46.9 57 61.8 59.5 51.2 39.9 28.9 15.4
Max °F 17.6 22.3 34.7 47.5 58.8 68.7 72.9 70.5 62.6 51.1 37.6 23.5

Sea temperature

The graph below shows the average sea temperature.

Rockford average sea temperature chart (Celsius) Rockford average sea temperature chart (Fahrenheit)
Average sea temperature around Rockford 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.

Rockford average winspeed by month (km/h) Rockford average winspeed by month (mph)
Average wind speed in Rockford (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 18 20 21 18 16 14 14 15 17 18 18
mph 12 11 13 13 11 10 9 9 9 11 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.

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

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Rockford weather stats

Rockford weather statistics
Hottest month: July 28.6°C 83.5°F
Driest month: February 29mm 1.1ins
Sunniest month: July 10.8hrs
Coldest month: January -3.4°C 25.9°F
Wettest month: June 113mm 4.4ins
Warmest sea: August 19.8°C 67.6°F
Map showing location of Rockford (42.27113, -89.094) Rockford map pin © Google

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