Keystone Heights, FL Weather & Growing Conditions
Today
91°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between noon and 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then a slight chance of showers and thunderstorms between 3pm and 5pm. Partly sunny. High near 91, with temperatures falling to around 89 in the afternoon. Northeast wind 0 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph NE | 29% |
| Tonight | 72°F | Partly Cloudy | 0 to 9 mph E | 6% |
| Sunday | 90°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 0 to 7 mph NE | 52% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms then Mostly Cloudy | 0 to 7 mph E | 27% |
| Monday | 90°F | Slight Chance Showers And Thunderstorms | 0 to 9 mph NE | 71% |
| Monday Night | 72°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 to 8 mph NE | 71% |
| Tuesday | 90°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 9 mph NE | 74% |
| Tuesday Night | 72°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 1 to 8 mph NE | 74% |
| Wednesday | 89°F | Showers And Thunderstorms Likely | 2 to 12 mph N | 68% |
| Wednesday Night | 72°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 3 to 12 mph NE | 68% |
| Thursday | 88°F | Chance Showers And Thunderstorms | 13 to 16 mph NE | 40% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 to 15 mph NE | 40% |
| Friday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 12 to 15 mph NE | 33% |
| Friday Night | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 7 to 15 mph NE | 33% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Keystone Heights, FL
Last spring frost
Feb 8
First fall frost
Dec 24
Growing season
313 days
Hardiness zone
9a
Explore more for Keystone Heights, FL: full frost dates · planting calendar · Florida frost dates
Climate data from the nearest NOAA station, Starke, Fl (12.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.