Oak Lawn (IL) Sunshine Hours by Month

The amount of sunshine is fundamental to comprehending a place's climate. This page shows the total number of hours of direct sunlight per month and the average hours per day in Oak Lawn, Illinois, United States of America. These values are calculated using 30 years of data (1990–2020) to ensure accuracy.

Monthly hours of sunshine

Sunshine in Oak Lawn varies greatly throughout the year. The sunniest month, July, reaches an impressive 319 hours, while December, the darkest month, offers only 107 hours. The total annual amount of sun is 2509 hours.

Daily hours of sunshine

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

Average percent of sunshine

On average the sun shines 69% of the time during the day in July, the highest percentage of any month. December has the lowest percentage at 37%.

Oak Lawn enjoys an average of 2509 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

Athens, Greece, enjoys 2769 hours of sunshine each year, making it one of the sunniest destinations in the Mediterranean region.

Manchester, UK, experiences just around 1420 hours of sunshine annually.

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

Perth, Australia, enjoys 3180 hours of sunshine annually, the highest among major Australian cities.

June, Oak Lawn’s wettest month, receives 113 mm (4.4 in) of rainfall and has a maximum daytime temperature of 27°C (81°F). During the driest month January you can expect a temperature of 0°C (32°F).

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