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.
The addition of some high clouds will be helpful, but dew points will be lower than on Monday morning. Ca Weather Bot, Sacbee.com, 6 Sep. 2026 Humidity will increase slightly, with dew points rising from the mid-60s to the low 70s and pushing heat index values between 100 and 107 degrees. Kansas City Star, 3 Sep. 2026 The dew point in Los Angeles reached the lows 70s in the final week of August, according to National Weather Service data. Paris Barraza, USA Today, 31 Aug. 2026 Upper-level ridging builds across the East early next week, sending temperatures back toward 90 Monday and Tuesday while dew points climb into the lower 70s. Bill Kelly, CBS News, 28 Aug. 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 8 Sep. 2026.

Kids Definition

dew point

noun
: the temperature at which the moisture in the air begins or would begin to collect on surfaces
Love words? Need even more definitions?

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