Siesta Key, FL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Siesta Key, a community in Sarasota County, Florida.
Tonight
74°F
Isolated Showers And Thunderstorms then Partly Cloudy
Isolated showers and thunderstorms before midnight. Partly cloudy, with a low around 74. East northeast wind around 9 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Siesta Key
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 74°F | Isolated Showers And Thunderstorms then Partly Cloudy | 9 mph ENE | 21% |
| Saturday | 89°F | Mostly Sunny then Scattered Showers And Thunderstorms | 7 mph NNE | 44% |
| Saturday Night | 74°F | Chance Showers And Thunderstorms | 7 mph ENE | 57% |
| Sunday | 88°F | Scattered Showers And Thunderstorms | 6 mph SSE | 82% |
| Sunday Night | 75°F | Showers And Thunderstorms | 7 mph NE | 82% |
| Monday | 88°F | Scattered Showers And Thunderstorms | 6 mph SSE | 74% |
| Monday Night | 76°F | Chance Showers And Thunderstorms | 7 mph SE | 74% |
| Tuesday | 88°F | Chance Showers And Thunderstorms | 8 mph SSE | 71% |
| Tuesday Night | 76°F | Chance Showers And Thunderstorms | 7 mph SSE | 71% |
| Wednesday | 88°F | Scattered Showers And Thunderstorms | 8 mph SW | 73% |
| Wednesday Night | 76°F | Chance Showers And Thunderstorms | 8 mph ENE | 73% |
| Thursday | 88°F | Isolated Showers And Thunderstorms | 9 mph NNE | 56% |
| Thursday Night | 76°F | Chance Showers And Thunderstorms | 9 mph NE | 56% |
| Friday | 88°F | Scattered Showers And Thunderstorms | 10 mph NNE | 51% |
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 Sep 19, 2026.