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
Most bathrooms include double sink vanities, oversize rainfall showers and separate soaking tubs, and come with either Toto toilets or a toilet alongside a bidet.
—
Condé Nast, Condé Nast Traveler, 7 Mar. 2026
During heavy rainfall, there is a risk of flooding, especially in low-lying and flood-prone areas.
—Star-Telegram Weather Bot, Fort Worth Star-Telegram, 7 Mar. 2026
The first serious storm system of meteorological spring for Central Texas will arrive this weekend, bringing the potential for strong thunderstorms, large hail, gusty winds, heavy rainfall and a noticeable drop in temperatures.
—Mary Wasson, Austin American Statesman, 7 Mar. 2026
The storms and heavy rainfall will also lead to flooding concerns.
—Lauren Bostwick, CBS News, 7 Mar. 2026
See All Example Sentences for rainfall
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Condé Nast, Condé Nast Traveler, 7 Mar. 2026
During heavy rainfall, there is a risk of flooding, especially in low-lying and flood-prone areas.
—Star-Telegram Weather Bot, Fort Worth Star-Telegram, 7 Mar. 2026
The first serious storm system of meteorological spring for Central Texas will arrive this weekend, bringing the potential for strong thunderstorms, large hail, gusty winds, heavy rainfall and a noticeable drop in temperatures.
—Mary Wasson, Austin American Statesman, 7 Mar. 2026
The storms and heavy rainfall will also lead to flooding concerns.
—Lauren Bostwick, CBS News, 7 Mar. 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 10 Mar. 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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