Miami is bracing for a 78% rain chance Wednesday — the highest probability of any major Florida city today — with 12.8mm of precipitation expected, according to National Weather Service data. That figure dwarfs Tampa’s 45% rain chance and Orlando’s 53% probability, making South Florida the focal point of the state’s wettest conditions on September 23, 2026.
Miami tops out at 84°F with a low of 78°F, winds gusting to 16 mph, and 84% humidity. Tampa reaches 89°F under cloudy skies with gusts hitting 17 mph and 3.6mm of rain possible. Orlando climbs to 87°F with an 18 mph gust ceiling and 5.3mm of precipitation forecast. Jacksonville matches Miami’s 84°F high but carries 87% humidity — the highest reading among all four cities — with gusts reaching 21 mph and 5.7mm of rain expected.
Conditions shift markedly by Friday. Miami surges to 93°F Thursday before dropping back to 87°F Friday, while its rain chance collapses from 78% today to just 17% Thursday. Tampa cools from 90°F Thursday to 85°F Friday, with rain probability falling to 2%. Orlando drops from 88°F Thursday to 82°F Friday, holding a 23% rain chance. Jacksonville reaches 85°F Thursday before pulling back to 81°F Friday, with gusts peaking at 24 mph Thursday.