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
Nitrogen is the primary nutrient that grass needs for growth, but it can easily be leached out of the soil during heavy rainfall, says Eric Nieusma, co-owner of Maine Hill Farm.
—
Sj McShane, Martha Stewart, 21 Feb. 2026
The weather service said the storm could arrive quietly on Sunday with rainfall in some places before worsening, with the heaviest snowfall expected Sunday night.
—CBS News, 21 Feb. 2026
Picacho Peak State Park The park received more than 4 inches of rainfall from September through the beginning of January so there was much anticipation for a splendid wildflower showing.
—Roger Naylor, AZCentral.com, 21 Feb. 2026
This renter-friendly swap will turn your shower from basic to spa bathroom; our Square Rain Showerhead evenly distributes water pressure for the perfect rainfall shower.
—Sophia Beams, Better Homes & Gardens, 20 Feb. 2026
See All Example Sentences for rainfall
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Sj McShane, Martha Stewart, 21 Feb. 2026
The weather service said the storm could arrive quietly on Sunday with rainfall in some places before worsening, with the heaviest snowfall expected Sunday night.
—CBS News, 21 Feb. 2026
Picacho Peak State Park The park received more than 4 inches of rainfall from September through the beginning of January so there was much anticipation for a splendid wildflower showing.
—Roger Naylor, AZCentral.com, 21 Feb. 2026
This renter-friendly swap will turn your shower from basic to spa bathroom; our Square Rain Showerhead evenly distributes water pressure for the perfect rainfall shower.
—Sophia Beams, Better Homes & Gardens, 20 Feb. 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 24 Feb. 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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