Average Monthly Sunshine in DeKalb (IL)

The graphs on this page shows the average number of hours per month and per day that DeKalb receives direct sunlight. The numbers are calculated over a 30-year period to provide a reliable average.

Monthly hours of sunshine

Seasonal sunshine in DeKalb varies. It peaks at 319 hours in July and drops to 107 hours in December. The total annual amount of sun is 2520 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in DeKalb. While July receives considerable daily sunshine with up to 10.6 hours, December marks the darkest time of the year, where sunshine is scarce with only 3.6 hours of sunlight per day.

DeKalb’s total hours of sunshine compared to other major cities

DeKalb enjoys an average of 2520 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

Seville, Spain, enjoys an impressive 2920 hours of sunshine per year, making it an ideal destination even in winter.

In contrast, Brussels, UK, receives only about 1590 hours of sunshine per year, known for its frequently overcast and rainy skies.

Oslo, Norway, receives approximately 1690 hours of sunshine annually.

In Tokyo, Japan, the average annual sunshine is 1930 hours, with sunny periods between rainy seasons.

Other climate information

June, DeKalb’s wettest month, receives 114 mm of rainfall and has a maximum daytime temperature of 26°C. During the driest month January you can expect a temperature of -2°C.

For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our DeKalb Precipitation page.