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.
From Tuesday through Friday, highs will be in the mid- to upper 90s each day, with dew points in the 70s. Ahmad Bajjey, CBS News, 27 June 2026 Heat indices approaching 110 degrees are possible from the mid-South to the central Gulf Coast where the combination of heat and high dew points will be greatest. Brandi D. Addison, USA Today, 26 June 2026 The air will feel more humid, with dew points, a measure of moisture in the air, in the mid-60s south and west of the metro. Kansas City Star, 24 June 2026 Low dew points, combined with high temperatures and wind, can cause rapid fire spread. Stephen Underwood, Hartford Courant, 1 June 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 29 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