Keystone, FL Weather & Growing Conditions
Tonight
73°F
Partly Cloudy
Partly cloudy, with a low around 73. East northeast wind 2 to 6 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Partly Cloudy | 2 to 6 mph ENE | 2% |
| Saturday | 91°F | Mostly Sunny then Scattered Showers And Thunderstorms | 2 to 6 mph NE | 43% |
| Saturday Night | 73°F | Scattered Showers And Thunderstorms then Partly Cloudy | 5 mph NE | 54% |
| Sunday | 90°F | Mostly Sunny then Showers And Thunderstorms | 5 mph NE | 78% |
| Sunday Night | 73°F | Showers And Thunderstorms then Isolated Showers And Thunderstorms | 5 mph ENE | 78% |
| Monday | 90°F | Partly Sunny then Showers And Thunderstorms | 5 mph NNE | 81% |
| Monday Night | 74°F | Showers And Thunderstorms then Scattered Showers And Thunderstorms | 3 mph ENE | 81% |
| Tuesday | 90°F | Isolated Showers And Thunderstorms then Scattered Showers And Thunderstorms | 5 mph SSE | 66% |
| Tuesday Night | 75°F | Chance Showers And Thunderstorms | 3 mph NE | 66% |
| Wednesday | 90°F | Chance Showers And Thunderstorms | 5 mph NE | 68% |
| Wednesday Night | 74°F | Chance Showers And Thunderstorms then Isolated Showers And Thunderstorms | 5 mph ENE | 68% |
| Thursday | 90°F | Mostly Sunny then Scattered Showers And Thunderstorms | 6 to 9 mph NE | 52% |
| Thursday Night | 74°F | Scattered Showers And Thunderstorms | 5 to 8 mph NE | 52% |
| Friday | 89°F | Scattered Showers And Thunderstorms | 10 mph NNE | 41% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Keystone, FL
Last spring frost
Jan 20
First fall frost
Jan 9
Growing season
354 days
Hardiness zone
9b
Explore more for Keystone, FL: full frost dates · planting calendar · Florida frost dates
Climate data from the nearest NOAA station, Tarpon Spgs Sewage Plt, Fl (9.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.