Average Monthly Sunshine hours in Naperville (IL)
This graph shows the average number of hours per month that Naperville receives direct sunlight. The numbers are calculated over a 30-year period to provide a reliable average.
- On average, July is the sunniest month with 319 hours of sunshine.
- December has on average the lowest amount of sunshine with 107 hours.
- On average, the total annual amount of sun is 2520 hours.
Forecast: is it sunny in Naperville (IL)?
almost clear and no rain
broken clouds and no rain
broken clouds and no rain