Du Quoin (IL) Temperature by Month
The average annual maximum temperature in Du Quoin, Illinois, United States of America is 19°C (66°F), with daytime highs ranging from 5°C (41°F) in January to 31°C (88°F) in July. This page covers monthly averages, day-night differences, and how Du Quoin compares to cities worldwide.
Du Quoin Monthly Temperatures
Visitors to Du Quoin will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 20°C (68°F) in July to -5°C (23°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Du Quoin by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM.
The chart below shows the average temperature throughout the year:
Temperature: Du Quoin vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Du Quoin vs World: Temperature Compared
Du Quoin's average annual maximum temperature is 19°C (66°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
Beijing, China averages 20°C (68°F) annually, but with big seasonal swings — very cold winters and hot summers.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Du Quoin's weather — including monthly rainfall, sunshine hours, and humidity — visit our Du Quoin climate page.
