Clear nights in Chicago
On average Chicago gets 179 clear nights a year. The best month to see stars is August, the cloudiest is January. Data for every night since 2016.
Clear nights by month
average clear nights in the month · 2016–2026
This month so far: 8 clear of 14 nights. Usual for the whole month: 15.5.
The last 30 nights
clear cloudy
FAQ
How many clear nights a year does Chicago have?
About 179 clear nights a year on average (2016–2026).
What is the best month for stargazing in Chicago?
August: on average 19.6 clear nights.
How many clear nights are there in Chicago in November?
On average 15.5 clear nights in November.
Tonight’s forecast for Chicago
How we count
A night counts from the moment the Sun is 8° below the horizon (bright stars are visible) until it climbs back. An hour is clear when cloud cover is 30% or less. A night is clear when at least 3 of its dark hours are clear (or 60% of them on short summer nights). Past years come from the ERA5 weather archive via Open-Meteo, recent nights are added every day. You can use this data with a link to NightSkyCast (CC BY 4.0): /api/db/rank, /api/db/city?s=vilnius