List of wettest tropical cyclones in the United States

Many of the wettest tropical cyclones in the United States have moved into the contiguous United States from the Atlantic Ocean, the Gulf of Mexico, and the eastern Pacific Ocean. The highest rainfall totals in the country have been measured across the Gulf Coast and lower portions of the Eastern Seaboard. Intermediate amounts have been measured across the Southwest, New England, and the Midwest. The northern Great Plains and Pacific Northwest have received the lowest amounts, as those regions lie exceptionally far from the breeding grounds of Atlantic and Eastern Pacific tropical cyclones.

A measurement of 48 in (1,200 mm) of rain during Tropical Storm Amelia holds the record for the highest precipitation total observed with a tropical cyclone in the contiguous United States. Tropical Storm Claudette holds the national 24-hour rainfall record, with 42 in (1,100 mm) observed within such a timeframe. Taking place only one year apart, in 1978 and 1979, Amelia and Claudette are also the two wettest tropical cyclones on record to have occurred in Texas. Hurricane Hiki caused significant rainfall in the mountains of Hawaii; with 52 in (1,300 mm) of rainfall reported, this is the most rainfall reported to have been produced by a tropical cyclone within the entirety of the United States.

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