Keystone, FL Weather & Growing Conditions
Today
88°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2pm, then scattered showers and thunderstorms. Partly sunny, with a high near 88. Heat index values as high as 97. Southwest wind 2 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Chance Showers And Thunderstorms | 2 to 8 mph SW | 63% |
| Tonight | 75°F | Isolated Showers And Thunderstorms | 2 to 6 mph S | 22% |
| Wednesday | 90°F | Scattered Showers And Thunderstorms | 2 to 6 mph S | 50% |
| Wednesday Night | 75°F | Scattered Showers And Thunderstorms then Mostly Cloudy | 2 to 6 mph ESE | 46% |
| Thursday | 93°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph ENE | 72% |
| Thursday Night | 75°F | Chance Showers And Thunderstorms then Partly Cloudy | 7 mph ENE | 72% |
| Friday | 92°F | Isolated Showers And Thunderstorms | 6 to 10 mph ENE | 73% |
| Friday Night | 75°F | Chance Showers And Thunderstorms then Isolated Showers And Thunderstorms | 5 to 8 mph E | 73% |
| Saturday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 mph SE | 69% |
| Saturday Night | 76°F | Chance Showers And Thunderstorms then Isolated Showers And Thunderstorms | 5 mph ESE | 69% |
| Sunday | 93°F | Mostly Sunny then Scattered Showers And Thunderstorms | 6 mph SSE | 50% |
| Sunday Night | 76°F | Scattered Showers And Thunderstorms | 3 mph ENE | 50% |
| Monday | 93°F | Mostly Sunny then Scattered Showers And Thunderstorms | 5 mph SSE | 34% |
| Monday Night | 76°F | Scattered Showers And Thunderstorms then Partly Cloudy | 3 mph NE | 34% |
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 Aug 4, 2026.