Glen St. Mary, FL Weather & Growing Conditions
Tonight
66°F
Partly Cloudy then Patchy Fog
Patchy fog after 4am. Partly cloudy. Low around 66, with temperatures rising to around 68 overnight. East wind 2 to 9 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 66°F | Partly Cloudy then Patchy Fog | 2 to 9 mph E | 2% |
| Wednesday | 86°F | Patchy Fog then Slight Chance Rain Showers | 3 to 9 mph SE | 15% |
| Wednesday Night | 66°F | Mostly Cloudy then Slight Chance Rain Showers | 1 to 6 mph SE | 17% |
| Thursday | 86°F | Patchy Fog then Chance Showers And Thunderstorms | 3 mph SE | 26% |
| Thursday Night | 65°F | Chance Showers And Thunderstorms then Patchy Fog | 3 mph S | 26% |
| Friday | 84°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 1 to 8 mph SW | 18% |
| Friday Night | 59°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 3 mph W | 18% |
| Saturday | 81°F | Mostly Sunny then Slight Chance Rain Showers | 2 to 7 mph NW | 15% |
| Saturday Night | 52°F | Slight Chance Rain Showers then Partly Cloudy | 1 to 5 mph N | 15% |
| Sunday | 77°F | Slight Chance Rain Showers | 2 to 7 mph N | 15% |
| Sunday Night | 50°F | Partly Cloudy then Slight Chance Rain Showers | 6 mph N | 15% |
| Monday | 73°F | Slight Chance Rain Showers | 6 to 10 mph N | 15% |
| Monday Night | 48°F | Slight Chance Rain Showers then Mostly Clear | 2 to 7 mph NE | 15% |
| Tuesday | 73°F | Sunny | 5 to 8 mph N | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Glen St. Mary, FL
Last spring frost
Mar 8
First fall frost
Dec 1
Growing season
272 days
Hardiness zone
9a
Explore more for Glen St. Mary, FL: full frost dates · planting calendar · Florida frost dates
Climate data from the nearest NOAA station, Glen St Mary 1 W, Fl (3.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.