Average Monthly Sunshine in Oak Brook (IL)

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

Monthly hours of sunshine

If you're visiting Oak Brook, timing is key. In July, you can enjoy up to 319 hours of sunshine, while the shorter days of December provide just 107 hours. The total annual amount of sun is 2520 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Oak Brook. 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.

Oak Brook’s total hours of sunshine compared to other major cities

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

The city of Rome, Italy, experiences 2470 hours of sunshine annually, adding to its charm as a year-round tourist destination.

The climate in San Francisco, USA, includes 3072 hours of sunshine annually, thanks to its mild coastal weather.

Beijing, China, has 2505 hours of sunshine annually, with clear, sunny days in winter.

In Brisbane, Australia, the annual sunshine averages 2999 hours, making it one of Australia’s sunniest cities.

Other climate information

June, Oak Brook’s wettest month, receives 109 mm of rainfall and has a maximum daytime temperature of 27°C. During the driest month January you can expect a temperature of -0°C.

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