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
The rainfall chances in South Florida over the next seven days.
—
Lissette Gonzalez, CBS News, 9 June 2026
Large hail and damaging winds are the main threats with the storms on both days, but heavy rainfall and localized flooding are also possible with the strongest storms, the weather service said.
—Kansas City Star, 9 June 2026
Cristina was forecast to bring rainfall of 4 to 8 inches, with maximum totals of about 12 inches (30 centimeters), across coastal Nicaragua, Honduras, El Salvador and Guatemala through Thursday.
—ABC News, 8 June 2026
According to Rogers, the western part of the state can expect widespread rainfall overnight Monday, with isolated showers continuing through Tuesday morning.
—Hali Smith, Idaho Statesman, 8 June 2026
See All Example Sentences for rainfall
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Lissette Gonzalez, CBS News, 9 June 2026
Large hail and damaging winds are the main threats with the storms on both days, but heavy rainfall and localized flooding are also possible with the strongest storms, the weather service said.
—Kansas City Star, 9 June 2026
Cristina was forecast to bring rainfall of 4 to 8 inches, with maximum totals of about 12 inches (30 centimeters), across coastal Nicaragua, Honduras, El Salvador and Guatemala through Thursday.
—ABC News, 8 June 2026
According to Rogers, the western part of the state can expect widespread rainfall overnight Monday, with isolated showers continuing through Tuesday morning.
—Hali Smith, Idaho Statesman, 8 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 15 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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