Oregon (IL) monthly weather averages

Average daytime temperature

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

Oregon average temperature chart (Celsius) Oregon average temperature chart (Fahrenheit)
Average monthly temperatures in Oregon (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -3.1 -0.4 6.7 14.7 21.3 26.7 28.7 27.4 23.3 16.6 8 -0.3
°F 26.4 31.3 44 58.4 70.4 80.1 83.7 81.3 73.9 62 46.3 31.5

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.

Oregon monthly rainfall chart (mm) Oregon monthly rainfall chart (inches)
Average monthly rainfall in Oregon (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 34 30 63 91 94 115 100 103 97 71 64 52
inches 1.3 1.2 2.5 3.6 3.7 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 11

Average annual rainfall in Oregon: 865.633mm (340.8 inches)

Average daily sunshine

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

Oregon average daily sunshine chart
Average daily sunshine Oregon
  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 8.1 6.7 4.4 4.1

Day / night temperatures

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

Oregon average minimum / maximum temperatures (Celsius) Oregon average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Oregon (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -12.9 -10.5 -3.5 2.7 8.6 14 16.6 15.3 10.6 4.3 -1.8 -9.2
Max °C -2.9 -0.1 6.9 15 21.7 27.1 29 27.7 23.6 17 8.2 -0
Min °F 8.8 13.2 25.7 36.8 47.4 57.1 61.9 59.5 51.1 39.7 28.8 15.5
Max °F 17.8 22.5 35.1 47.8 59.2 68.9 73 70.7 62.8 51.1 37.8 23.7

Sea temperature

The graph below shows the average sea temperature.

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

Oregon average winspeed by month (km/h) Oregon average winspeed by month (mph)
Average wind speed in Oregon (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 18 20 21 18 16 14 13 15 17 18 18
mph 12 11 13 13 11 10 9 8 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.

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

Other monthly averages

UV index Best time to go?

Oregon weather stats

Oregon weather statistics
Hottest month: July 28.7°C 83.7°F
Driest month: February 30mm 1.2ins
Sunniest month: July 10.8hrs
Coldest month: January -3.1°C 26.4°F
Wettest month: June 115mm 4.5ins
Warmest sea: August 19.8°C 67.6°F
Map showing location of Oregon (42.01475, -89.33233) Oregon map pin © Google

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