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
India is already in the grip of a severe heatwave, and nearly 60% of its farming relies on rainfall.
—
Sri Jegarajah,priyanka Salve, CNBC, 3 June 2026
Lightning, downburst winds and heavy rainfall will all be possible.
—Brayden Garcia, Fort Worth Star-Telegram, 2 June 2026
Fueled by unusually warm ocean waters in the tropical Pacific, the WMO said El Niño conditions are developing and set to influence global temperature and rainfall patterns.
—Doyle Rice, USA Today, 2 June 2026
Of the 27 spring weekend days, 18 had some rainfall and 16 had below average temperatures.
—Terry Eliasen, CBS News, 1 June 2026
See All Example Sentences for rainfall
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Sri Jegarajah,priyanka Salve, CNBC, 3 June 2026
Lightning, downburst winds and heavy rainfall will all be possible.
—Brayden Garcia, Fort Worth Star-Telegram, 2 June 2026
Fueled by unusually warm ocean waters in the tropical Pacific, the WMO said El Niño conditions are developing and set to influence global temperature and rainfall patterns.
—Doyle Rice, USA Today, 2 June 2026
Of the 27 spring weekend days, 18 had some rainfall and 16 had below average temperatures.
—Terry Eliasen, CBS News, 1 June 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 9 Jun. 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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