South Florida Experiences Surge in Tropical Moisture, Leading to Heavy Rain and Thunderstorms
A surge of tropical moisture has returned across South Florida, increasing the risk for heavy rain and thunderstorms, as well as the coverage of rain through the end of the week. Through Sunday, an additional widespread 2-3 inches of rain is possible, mainly across the East Coast of Florida.
According to the FOX Forecast Center, the nonstop precipitation has actually helped ease drought conditions that have plagued much of the Sunshine State this year. Miami has recorded more than 14 inches of rain since the start of the month, ranking as the third-wettest start to the month in 130 years of recordkeeping. The city typically averages 10 inches for all of September.
Flash Flood Threat and Rainfall Forecast
A flash flood threat is in place for portions of the Gold Coast through Saturday morning. NOAA’s Weather Prediction Center has issued a Level 1 out of 4 flash flood threat from the Florida Keys to Vero Beach. The threat expands northward through Melbourne on Friday. 
This graphic shows the rainfall forecast through Sunday. (FOX Weather)
Additionally, an additional widespread 2-3 inches of rain is possible through Sunday, mainly across Florida’s east coast, with localized instances of 3-5 inches possible from storms that repeatedly move over the same area. 
This graphic shows the flash flood threat for Florida through Friday, Sept. 19, 2025. (FOX Weather)
Impact on Drought Conditions and Rain Totals
The overall rain has been beneficial for Florida, which now has drought conditions across just 3% of the state, down from 84% of the state as of early May. 
This graphic shows areas of drought. (FOX Weather)
Fort Lauderdale has recorded more than 9 inches, and Daytona Beach has recorded over 8 inches of rain since the beginning of the month. 
This graphic shows Florida rain totals beginning since Sept. 1, 2025. (FOX Weather)
Northern Florida Remains Dry
It’s been a tale of two states in terms of precipitation this month. While South Florida has been swamped, the Florida Panhandle has stayed dry, with Tallahassee not recording a single drop this month – its driest start to September on record. On the state’s Gulf coast, Tampa has only picked up 0.44 inches of rain, its third-driest start to September in history.
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