St. Marks, FL Weather & Growing Conditions
Today
91°F
Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Sunny. High near 91, with temperatures falling to around 86 in the afternoon. Southwest wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 48% |
| Tonight | 73°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 33% |
| Wednesday | 91°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 10 mph S | 16% |
| Wednesday Night | 73°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 17% |
| Thursday | 91°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 38% |
| Thursday Night | 74°F | Chance Showers And Thunderstorms | 0 mph | 38% |
| Friday | 93°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph ESE | 31% |
| Friday Night | 74°F | Chance Showers And Thunderstorms | 0 mph | 31% |
| Saturday | 91°F | Chance Showers And Thunderstorms | 0 to 5 mph ESE | 51% |
| Saturday Night | 74°F | Chance Showers And Thunderstorms | 0 mph | 51% |
| Sunday | 91°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 53% |
| Sunday Night | 75°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 34% |
| Monday | 92°F | Chance Showers And Thunderstorms | 0 to 5 mph SSE | 39% |
| Monday Night | 75°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 39% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Marks, FL
Last spring frost
Mar 11
First fall frost
Nov 21
Growing season
255 days
Hardiness zone
9a
Explore more for St. Marks, FL: full frost dates · planting calendar · Florida frost dates
Climate data from the nearest NOAA station, Tallahassee, Fl (17.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.