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
Even with limited rainfall on Saturday, slick road conditions caused problems for at least one driver.
—
Da Lin, CBS News, 21 Dec. 2025
During periods of intense rainfall, the risk of flooding increases, particularly in low-lying and flood-prone areas.
—Ca Weather Bot, Sacbee.com, 20 Dec. 2025
The system unleashed even heavier rainfall in areas west of Kerrville, Texas.
—Janet Loehrke, USA Today, 20 Dec. 2025
When unusually heavy rainfall rendered that year a washout on the farming front, Sue got a job at Beth’s Farm Kitchen, a prominent jam and chutney maker nearby.
—Alexandra Kirkman, Fortune, 17 Dec. 2025
See All Example Sentences for rainfall
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Da Lin, CBS News, 21 Dec. 2025
During periods of intense rainfall, the risk of flooding increases, particularly in low-lying and flood-prone areas.
—Ca Weather Bot, Sacbee.com, 20 Dec. 2025
The system unleashed even heavier rainfall in areas west of Kerrville, Texas.
—Janet Loehrke, USA Today, 20 Dec. 2025
When unusually heavy rainfall rendered that year a washout on the farming front, Sue got a job at Beth’s Farm Kitchen, a prominent jam and chutney maker nearby.
—Alexandra Kirkman, Fortune, 17 Dec. 2025
See All Example Sentences for rainfall
Cite this Entry
“Rainfall.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rainfall. Accessed 25 Dec. 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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