Keystone, FL Weather & Growing Conditions
This Afternoon
85°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5pm, then scattered showers and thunderstorms. Partly sunny. High near 85, with temperatures falling to around 79 in the afternoon. East wind around 9 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 85°F | Chance Showers And Thunderstorms | 9 mph E | 66% |
| Tonight | 71°F | Scattered Showers And Thunderstorms then Partly Cloudy | 5 to 8 mph E | 28% |
| Wednesday | 86°F | Partly Sunny then Scattered Showers And Thunderstorms | 2 to 7 mph ESE | 26% |
| Wednesday Night | 70°F | Isolated Showers And Thunderstorms then Partly Cloudy | 2 mph E | 24% |
| Thursday | 85°F | Sunny | 3 mph ENE | 9% |
| Thursday Night | 69°F | Partly Cloudy | 2 mph N | 9% |
| Friday | 83°F | Mostly Sunny | 0 to 7 mph W | 3% |
| Friday Night | 68°F | Mostly Clear | 0 to 3 mph NW | 2% |
| Saturday | 81°F | Sunny | 0 to 7 mph NNW | 3% |
| Saturday Night | 62°F | Mostly Clear | 5 mph N | 3% |
| Sunday | 79°F | Mostly Sunny | 2 to 7 mph N | 11% |
| Sunday Night | 61°F | Partly Cloudy then Isolated Rain Showers | 6 mph N | 16% |
| Monday | 76°F | Isolated Rain Showers | 6 to 9 mph N | 19% |
| Monday Night | 58°F | Isolated Rain Showers then Mostly Clear | 7 mph NNE | 15% |
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 Nov 4, 2026.