Weather WorldSiesta Key, FL 7-Day Weather Forecast
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Siesta Key Weather Forecast
Siesta Key, FL Weather Forecast Date: 222 AM EDT Sat Sep 12 2026
Weather forecast for Siesta Key, FL
Today Hi: 90°FHi: 32°C Lo: 79°F Lo: 26°C |
Today... Mostly sunny. Isolated showers and thunderstorms this morning, then scattered showers and thunderstorms this afternoon. Highs around 90. Southeast winds around 5 mph, becoming southwest this afternoon. Chance of rain 50%. Heat index values up to 105. |
| Sun Hi: 90°FHi: 32°C Lo: 79°F Lo: 26°C |
Sunday... Mostly sunny. Isolated showers and thunderstorms in the morning, then numerous showers and thunderstorms in the afternoon. Humid with highs around 90. East winds around 5 mph, becoming west around 5 mph in the afternoon. Chance of rain 70%. |
| Mon Hi: 90°FHi: 32°C Lo: 75°F Lo: 24°C |
Monday... Mostly sunny. Scattered showers with isolated thunderstorms in the morning, then numerous showers and thunderstorms in the afternoon. Humid with highs around 90. Northeast winds around 5 mph, becoming northwest in the afternoon. Chance of rain 70%. |
| Tue Hi: 91°FHi: 33°C Lo: 75°F Lo: 24°C |
Tuesday... Partly cloudy with numerous showers and thunderstorms. Lows in the mid 70s. Highs in the lower 90s. Chance of rain 70%. |
| Tue Hi: 91°FHi: 33°C Lo: 75°F Lo: 24°C |
Tuesday... Partly cloudy with numerous showers and thunderstorms. Lows in the mid 70s. Highs in the lower 90s. Chance of rain 70%. |
Wed Hi: 90°FHi: 32°C Lo: 75°F Lo: 24°C |
Wednesday... Sunny. Numerous showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 70%. |
| Thu Hi: 90°FHi: 32°C Lo: 75°F Lo: 24°C |
Thursday... Partly cloudy. Numerous showers and scattered thunderstorms. Highs around 90. Lows in the mid 70s. Chance of rain 70%. |
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