Siesta Key, FL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Siesta Key, a community in Sarasota County, Florida.
Today
87°F
Scattered Showers And Thunderstorms
Scattered showers and thunderstorms. Partly sunny, with a high near 87. Heat index values as high as 97. Southwest wind 6 to 9 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Siesta Key
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Scattered Showers And Thunderstorms | 6 to 9 mph SW | 46% |
| Tonight | 76°F | Scattered Showers And Thunderstorms | 5 to 9 mph S | 30% |
| Wednesday | 88°F | Scattered Showers And Thunderstorms | 5 to 8 mph S | 39% |
| Wednesday Night | 75°F | Chance Showers And Thunderstorms then Mostly Cloudy | 7 mph E | 55% |
| Thursday | 91°F | Partly Sunny then Widespread Showers And Thunderstorms | 9 mph ENE | 77% |
| Thursday Night | 75°F | Widespread Showers And Thunderstorms then Mostly Cloudy | 10 mph ENE | 77% |
| Friday | 90°F | Isolated Showers And Thunderstorms | 9 to 13 mph ENE | 77% |
| Friday Night | 75°F | Widespread Showers And Thunderstorms then Scattered Showers And Thunderstorms | 9 mph E | 77% |
| Saturday | 89°F | Isolated Showers And Thunderstorms | 7 to 10 mph SE | 67% |
| Saturday Night | 76°F | Chance Showers And Thunderstorms then Scattered Showers And Thunderstorms | 5 to 8 mph ESE | 67% |
| Sunday | 90°F | Mostly Sunny then Scattered Showers And Thunderstorms | 8 mph SSE | 51% |
| Sunday Night | 76°F | Scattered Showers And Thunderstorms | 7 mph NE | 51% |
| Monday | 90°F | Mostly Sunny then Scattered Showers And Thunderstorms | 7 mph S | 37% |
| Monday Night | 77°F | Scattered Showers And Thunderstorms then Partly Cloudy | 6 mph ENE | 37% |
Forecast source: National Weather Service (api.weather.gov) for Siesta Key (27.275, -82.549). Updated through the day.
Growing snapshot for Siesta Key
Last spring frost
Jan 15
First fall frost
Jan 10
Growing season
365 days
Hardiness zone
10a
More local growing data for Siesta Key: nearby ZIP 34242 weather · frost dates · planting calendar · Florida frost dates
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Climate data from the nearest NOAA station, Sarasota Bradenton Ap, Fl (9.8 mi from Siesta Key). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.