Glen St. Mary, FL Weather & Growing Conditions
Today
92°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between noon and 1pm, then a chance of showers and thunderstorms. Partly sunny. High near 92, with temperatures falling to around 88 in the afternoon. East wind 5 to 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 5 to 8 mph E | 38% |
| Tonight | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 7 mph E | 23% |
| Sunday | 91°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 7 mph NE | 40% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms then Mostly Cloudy | 0 to 6 mph SE | 33% |
| Monday | 90°F | Showers And Thunderstorms Likely | 0 to 7 mph NE | 59% |
| Monday Night | 70°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 to 6 mph E | 59% |
| Tuesday | 90°F | Showers And Thunderstorms Likely | 0 to 7 mph NE | 66% |
| Tuesday Night | 70°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 7 mph NE | 66% |
| Wednesday | 89°F | Showers And Thunderstorms Likely | 2 to 9 mph NE | 60% |
| Wednesday Night | 69°F | Showers And Thunderstorms Likely | 2 to 9 mph NE | 60% |
| Thursday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 13 mph NE | 31% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 12 mph NE | 31% |
| Friday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 13 mph NE | 29% |
| Friday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 12 mph NE | 29% |
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 Sep 19, 2026.