1
: the amount of precipitation usually measured by the depth in inches
2
Synonyms
Examples of rainfall in a Sentence
This area has an average annual rainfall of 12 inches.
an increase in annual rainfall
Recent Examples on the Web
What To Know The alert, which will be in effect from Wednesday evening through Thursday afternoon, covers Sevier, Howard, and Little River Counties in Arkansas, as well as McCurtain County in Oklahoma, where rainfall rates could overwhelm local drainage systems.
—
Jonathan Granoff, Newsweek, 29 Jan. 2025
The impact of climate change on Southern California's rainfall is another challenging question.
—Lauren Sommer, NPR, 29 Jan. 2025
DaSilva does not foresee any more rainfall in Southern California until possibly the end of the first week of February, which raises concerns that new fires could ignite, perhaps through human behavior like tossing out a lit cigarette or failing to completely put out a campfire.
—Jorge L. Ortiz, USA TODAY, 28 Jan. 2025
Saturday’s rainfall alone breaks a record dry spell for downtown Los Angeles.
—Rong-Gong Lin Ii, Los Angeles Times, 27 Jan. 2025
See all Example Sentences for rainfall 
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Jonathan Granoff, Newsweek, 29 Jan. 2025
The impact of climate change on Southern California's rainfall is another challenging question.
—Lauren Sommer, NPR, 29 Jan. 2025
DaSilva does not foresee any more rainfall in Southern California until possibly the end of the first week of February, which raises concerns that new fires could ignite, perhaps through human behavior like tossing out a lit cigarette or failing to completely put out a campfire.
—Jorge L. Ortiz, USA TODAY, 28 Jan. 2025
Saturday’s rainfall alone breaks a record dry spell for downtown Los Angeles.
—Rong-Gong Lin Ii, Los Angeles Times, 27 Jan. 2025
See all Example Sentences for rainfall
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Dictionary Entries Near rainfall
Cite this Entry
“Rainfall.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rainfall. Accessed 1 Feb. 2025.
Copy CitationKids Definition
rainfall
noun
rain·fall
-ˌfȯl 
1
: a fall of rain
2
: amount of precipitation
an annual rainfall of 20 inches
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