dew point


: 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 Afternoon temperatures head for the 70s to possibly near 80 in some spots with a touch of humidity (dew points in the 50s) and the chance of a light shower during the afternoon. Dan Stillman, Washington Post, 8 Nov. 2023 Saturday may even feel a bit humid with dew points rising to near 60. Dan Stillman, Washington Post, 25 Oct. 2023 Humidity rises when the air temperature and the dew point, which measures how much moisture is in the air, approach the same temperature. Mary Gilbert, CNN, 14 Oct. 2023 Should reach near 70 to the low 70s for afternoon highs with refreshingly dry air (dew points in the mid-30s to near 40). Dan Stillman, Washington Post, 11 Oct. 2023 Humidity should be slightly lower with afternoon dew points dipping into the mid- to upper 50s. Matt Rogers, Washington Post, 3 Oct. 2023 Humidity stays low with dew points in the upper 40s to low 50s. Matt Rogers, Washington Post, 19 Sep. 2023 Thursday's record-breaking dew point is contributing to why Central Indiana is sweltering under heat indexes of between 105 and 115 degrees, White said. John Tufts, The Indianapolis Star, 24 Aug. 2023 With moderate to high humidity (dew points in the upper 60s to near 70), the afternoon heat index should reach 100 to 105. Dan Stillman, Washington Post, 6 Sep. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'dew point.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1826, in the meaning defined above

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

Dictionary Entries Near dew point

Cite this Entry

“Dew point.” Dictionary, Merriam-Webster, Accessed 28 Nov. 2023.

Kids Definition

dew point

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

More from Merriam-Webster on dew point

Last Updated: - Updated example sentences
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