Dupo is a city of approximately 3,900 people in Illinois, United States. Located in the Central Time Zone at 38.5°N latitude.
Across a typical year Dupo sees about 41 inches of precipitation, with May the wettest month and February the driest. Temperatures range from January lows near 24°F up to July highs around 89°F, averaging 57°F annually — characteristic of a humid continental climate.