dew point

noun

: the temperature at which a vapor (such as water) begins or would begin to condense

Examples of dew point in a Sentence

It's 78° outside and the dew point is 63°.
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.
Humidity remains high, with dew points well into the 70s. Nelly Carreño, CBS News, 11 June 2026 Temperatures are expected to climb to around 90 degrees in the afternoon, with dew points, a measure of how much moisture is in the air, reaching the mid- to upper 70s. Kansas City Star, 10 June 2026 Low dew points, combined with high temperatures and wind, can cause rapid fire spread. Stephen Underwood, Hartford Courant, 1 June 2026 This is especially common in Southern states and coastal areas where dew points stay high throughout the summer months. Jessica Safavimehr, Southern Living, 28 May 2026 See All Example Sentences for dew point

Word History

First Known Use

1826, in the meaning defined above

Time Traveler
The first known use of dew point was in 1826

Browse Nearby Words

Cite this Entry

“Dew point.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dew%20point. Accessed 17 Jun. 2026.

Kids Definition

dew point

noun
: the temperature at which the moisture in the air begins or would begin to collect on surfaces

More from Merriam-Webster on dew point

Love words? Need even more definitions?

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

More from Merriam-Webster