St. Marks, FL Weather & Growing Conditions
Overnight
68°F
Slight Chance Rain Showers
A slight chance of rain showers before 5am. Mostly cloudy, with a low around 68. East southeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Slight Chance Rain Showers | 5 mph ESE | 17% |
| Wednesday | 79°F | Slight Chance Rain Showers | 5 to 10 mph SE | 22% |
| Wednesday Night | 68°F | Partly Cloudy | 0 to 5 mph SSE | 9% |
| Thursday | 81°F | Mostly Sunny | 0 to 5 mph SSE | 11% |
| Thursday Night | 67°F | Partly Cloudy | 0 to 5 mph SW | 7% |
| Friday | 80°F | Partly Sunny | 0 to 5 mph WSW | 13% |
| Friday Night | 59°F | Partly Cloudy | 0 to 5 mph NW | 3% |
| Saturday | 79°F | Sunny | 5 mph NNW | 1% |
| Saturday Night | 51°F | Partly Cloudy | 0 to 5 mph NNW | 1% |
| Sunday | 75°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph NNW | 15% |
| Sunday Night | 50°F | Slight Chance Rain Showers | 0 to 5 mph NNW | 15% |
| Monday | 74°F | Slight Chance Rain Showers | 5 mph N | 15% |
| Monday Night | 48°F | Partly Cloudy | 0 to 5 mph NE | 11% |
| Tuesday | 74°F | Slight Chance Rain Showers | 0 to 5 mph NNE | 15% |
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 Nov 4, 2026.