1
: the amount of precipitation usually measured by the depth in inches
2
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
That will also help increase the chance for morning drizzle and some rainfall.
—
Grace Toohey, Los Angeles Times, 26 May 2026
The bigger concern is heavy rainfall.
—Nelly Carreño, CBS News, 26 May 2026
While the severe threat may be lower on Wednesday, heavy rainfall remains a concern.
—Brandi D. Addison, USA Today, 26 May 2026
In 2023, Western African cocoa-producing giants like Ivory Coast, Ghana, Nigeria and Cameroon saw very high levels of rainfall and flooding.
—Indrabati Lahiri, Forbes.com, 25 May 2026
See All Example Sentences for rainfall
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Grace Toohey, Los Angeles Times, 26 May 2026
The bigger concern is heavy rainfall.
—Nelly Carreño, CBS News, 26 May 2026
While the severe threat may be lower on Wednesday, heavy rainfall remains a concern.
—Brandi D. Addison, USA Today, 26 May 2026
In 2023, Western African cocoa-producing giants like Ivory Coast, Ghana, Nigeria and Cameroon saw very high levels of rainfall and flooding.
—Indrabati Lahiri, Forbes.com, 25 May 2026
See All Example Sentences for rainfall
Cite this Entry
“Rainfall.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rainfall. Accessed 29 May. 2026.
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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