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.
Temperatures have warmed well into the upper 70s to mid 80s across our region, but dew points are in the upper 40s to low 50s, yielding high cloud bases. Trey Fulbright, CBS News, 22 Mar. 2026 In the past 24 hours, surface winds have shifted to the south, not only helping to boost temperatures after the unseasonably cold start to the week but also nudging up humidity and dew point temps, which should diminish the wildfire threat heading into Thursday. Newsroom Meteorologist, Austin American Statesman, 19 Mar. 2026 The unusually warm temperatures, combined with muggy air, dew points in the mid-60s, and other atmospheric ingredients, will create an unstable air mass that can fuel severe storms. Kansas City Star, 10 Mar. 2026 Some locally dense fog remains possible as dew point temperatures — an indicator of atmospheric moisture — and air temperatures reach the low 60s. Mary Wasson, San Antonio Express-News, 10 Feb. 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

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Cite this Entry

“Dew point.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dew%20point. Accessed 25 Mar. 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

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