Weather

FORECAST: Tropical moisture brings heat, humidity and afternoon storms

WPTV First Alert Weather forecast for Night of Wednesday, Sept. 9, 2026
WPTV First Alert Weather forecast for Evening of Wednesday, Sept. 9, 2026
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WEST PALM BEACH, Fla. — Tonight will remain warm and muggy with overnight lows settling into the upper 70s to low 80s. Additional showers or storms remain possible overnight.

WPTV First Alert Weather forecast for Evening of Wednesday, Sept. 9, 2026

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The weather pattern shifts notably as we head into the latter half of the week. Thursday brings increasing moisture and more numerous afternoon thunderstorms, while highs hold steady in the upper 80s to around 90 degrees.

Friday through the weekend marks a significant change toward much more active conditions. Widespread afternoon thunderstorms with locally heavy rainfall become the dominant feature, pushing rain chances up to 70-80 percent across portions of the Treasure Coast, with substantial storm coverage also expected in the Palm Beaches. This more active storm period will persist through Sunday.