rain·​fall | \ ˈrān-ˌfȯl How to pronounce rainfall (audio) \

Definition of rainfall

1 : the amount of precipitation usually measured by the depth in inches

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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 The system is pushing heavy rainfall and gusty winds across portions of the central and northern Lesser Antilles on Tuesday and across the Virgin Islands and the Leeward Islands over the next couple of days. Joe Mario Pedersen, orlandosentinel.com, 12 Oct. 2021 The tropical wave will move west-northwest at 15 mph for the next few days before dumping heavy rainfall and winds on the far eastern boundaries of the Caribbean. Angie Dimichele, sun-sentinel.com, 10 Oct. 2021 The heavy rainfall across the Midwest and Northeast caused significant issues for farmers during harvest season. Alexis Oatman, cleveland, 4 Oct. 2021 Near-term weather forecasting—in this case, accurately predicting local rainfall and snow in a specific location within a two-hour window—is an important challenge in meteorology. Jeremy Kahn, Fortune, 29 Sep. 2021 Despite originally making landfall as a Category 1 Hurricane in Texas early last week, the now remnants of Tropical Cyclone Nicholas continue to pose a heavy rainfall and flash flooding threat Monday. Adam Klotz, Fox News, 20 Sep. 2021 The first moment of clarity was about rainfall and lightning in a storm. Marshall Shepherd, Forbes, 15 Sep. 2021 Nicholas brought heavy rainfall and hurricane-force winds to Texas, knocking out power to more than half a million residents. Zoe Christen Jones, CBS News, 15 Sep. 2021 Klaus said the rainfall and winds created a storm surge of about 2 feet in front of his home. Juan A. Lozano, chicagotribune.com, 14 Sep. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rainfall.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of rainfall

1817, in the meaning defined at sense 1

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Time Traveler for rainfall

Time Traveler

The first known use of rainfall was in 1817

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Dictionary Entries Near rainfall

rainette green


rain forest

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Statistics for rainfall

Last Updated

14 Oct 2021

Cite this Entry

“Rainfall.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rainfall. Accessed 16 Oct. 2021.

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More Definitions for rainfall



English Language Learners Definition of rainfall

: the amount of rain that falls on a particular area


rain·​fall | \ ˈrān-ˌfȯl How to pronounce rainfall (audio) \

Kids Definition of rainfall

2 : amount of precipitation Their average annual rainfall is 80 centimeters.

More from Merriam-Webster on rainfall

Nglish: Translation of rainfall for Spanish Speakers

Britannica English: Translation of rainfall for Arabic Speakers

Britannica.com: Encyclopedia article about rainfall


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