Quincy (IL) monthly weather averages

Contents

Average daytime temperature

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

Quincy average temperature chart (Celsius) Quincy average temperature chart (Fahrenheit)
Average monthly temperatures in Quincy (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 0.3 3.3 10.4 18 23.4 28.4 30.9 29.3 25.7 19.3 11.1 3.1
°F 32.6 37.9 50.7 64.4 74.1 83.1 87.6 84.7 78.3 66.8 52.1 37.6

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.

Quincy monthly rainfall chart (mm) Quincy monthly rainfall chart (inches)
Average monthly rainfall in Quincy (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 36 38 76 92 112 93 117 92 107 83 69 56
inches 1.4 1.5 3 3.6 4.4 3.7 4.6 3.6 4.2 3.3 2.7 2.2
Rainy days 8 8 11 11 11 9 9 8 9 9 9 10

Average annual rainfall in Quincy: 918.4mm (361.6 inches)

Average daily sunshine

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

Quincy average daily sunshine chart
Average daily sunshine Quincy
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.7 6.1 6.7 8 9.2 10.6 10.9 9.8 8.4 7.3 5.2 4.7

Day / night temperatures

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

Quincy average minimum / maximum temperatures (Celsius) Quincy average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Quincy (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -9.6 -6.9 -0.5 6.1 11.6 16.6 19.1 17.5 13.2 7 0.8 -6
Max °C 0.6 3.5 10.7 18.3 23.7 28.7 31.2 29.6 26 19.7 11.4 3.4
Min °F 14.8 19.6 31.2 43 52.8 61.8 66.3 63.4 55.8 44.5 33.4 21.3
Max °F 23.9 28.9 41.2 54 63.7 72.7 77.2 74.3 67.3 55.9 43 29.7

Sea temperature

The graph below shows the average sea temperature.

Quincy average sea temperature chart (Celsius) Quincy average sea temperature chart (Fahrenheit)
Average sea temperature around Quincy in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.9 9.6 10.1 11.4 13.5 16 18.8 21.7 20.4 16.5 13.4 11.3
°F 49.8 49.2 50.2 52.6 56.2 60.7 65.9 71 68.7 61.8 56.1 52.3

Wind speed

The graph below shows the average wind speed.

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

Quincy relative humidity averages
Average relative humidity in Quincy
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
72% 72% 69% 64% 67% 68% 70% 72% 72% 69% 72% 75%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Quincy weather stats

Quincy weather statistics
Hottest month: July 30.9°C 87.6°F
Driest month: January 36mm 1.4ins
Sunniest month: July 10.9hrs
Coldest month: January 0.3°C 32.5°F
Wettest month: July 117mm 4.6ins
Warmest sea: August 21.7°C 71.1°F
Map showing location of Quincy (39.9356, -91.40987) Quincy map pin © Google

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