Joliet (IL) Sunshine Hours by Month

To truly understand a climate, we must look at its sunshine. This page shows the total number of hours of direct sunlight per month and the average hours per day in Joliet, Illinois, United States of America. This average is based on long-term data collected between 1990 and 2020.

Monthly hours of sunshine

Seasonal sunshine in Joliet varies. It peaks at 319 hours in July and drops to 107 hours in December. The total annual amount of sun is 2509 hours.

Daily hours of sunshine

For those who appreciate different seasons, Joliet serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 10.6 hours of sunshine daily, and embrace the darker days in December, offering only 3.6 hours of daily sunlight.

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%.

Joliet vs Major Cities: Sunshine Compared

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

In Barcelona, Spain, there are 2530 hours of sunshine annually and is a city that can be visited year-round.

In contrast, Tromsø , Norway, receives only about 1270 hours of sunshine per year, known for the polar night with no sunlight for weeks during winter.

Toronto, Canada, sees around 2071 hours of sunshine each year, with especially long, bright summer days.

Melbourne, Australia, has 2380 hours of sunshine annually, with its famous “four seasons in a day” weather pattern.

Related Climate Data for Joliet

June, Joliet’s wettest month, receives 116 mm (4.6 in) of rainfall and has a maximum daytime temperature of 27°C (81°F). During the driest month February 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 Joliet Precipitation page.