windchill

noun

wind·​chill ˈwin(d)-ˌchil How to pronounce windchill (audio)
: a still-air temperature that would have the same cooling effect on exposed human skin as a given combination of temperature and wind speed

called also chill factor, windchill factor, windchill index

Examples of windchill in a Sentence

It's cold outside, and it feels even colder because of the windchill. Expect windchills in the 20s tonight.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The temperature in Washington this morning is 24 degrees, with the windchill even lower and a light snow on the ground, a reason why Trump decided to move the swearing in ceremony indoors. Ted Johnson, Deadline, 20 Jan. 2025 The weather forecast for Washington, D.C., with the windchill factor, could take temperatures into severe record lows... David Faris, Newsweek, 19 Jan. 2025 Officials warned that windchills cold be as low as 10 below throughout Wednesday morning. Deanese Williams-Harris, Chicago Tribune, 15 Jan. 2025 Temperatures will drop to minus 6 overnight before any windchill. Lauren Penington, The Denver Post, 15 Jan. 2025 See all Example Sentences for windchill 

Word History

First Known Use

1939, in the meaning defined above

Time Traveler
The first known use of windchill was in 1939

Dictionary Entries Near windchill

Cite this Entry

“Windchill.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/windchill. Accessed 29 Jan. 2025.

Kids Definition

windchill

noun
wind·​chill -ˌchil How to pronounce windchill (audio)
: a still-air temperature that would have the same cooling effect on exposed human flesh as a given combination of temperature and wind speed

called also windchill factor, windchill index

Medical Definition

windchill

noun
wind·​chill ˈwin(d)-ˌchil How to pronounce windchill (audio)
: a still-air temperature that would have the same cooling effect on exposed human skin as a given combination of temperature and wind speed

called also chill factor, windchill factor, windchill index

More from Merriam-Webster on windchill

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!