Curious America · Weather records

Greatest 24-hour precipitation by state

Hawaii's record is 49.69 inches, observed at Waipā Garden (Kauai) on April 14, 2018. It is the most extreme greatest 24-hour precipitation among the state records shown here.

Each state contributes a NOAA-recognized precipitation total measured during a 24-hour period. These are individual historical observations, not statewide averages, seasonal norms, or a prediction of typical weather.

The three most extreme records

1. 1.Hawaii: 49.69 inches, Waipā Garden (Kauai) — April 14, 2018.
2. 2.Texas: 42 inches, Alvin — July 25, 1979.
3. 3.Alabama: 32.52 inches, Dauphin Island Sea Lab — July 19, 1997.

NOAA's State Climate Extremes Committee reviews these state records. The map reflects the committee table reviewed by MoverMath on September 5, 2026; later reviews can revise a record.

Source: NOAA National Centers for Environmental Information, State Climate Extremes Committee records.