St. George Island, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. George Island, a community in St. Mary's County, Maryland.
Today
84°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 84. East wind 7 to 12 mph, with gusts as high as 18 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for St. George Island
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 7 to 12 mph E | 34% |
| Tonight | 74°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 7 mph SE | 70% |
| Wednesday | 86°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 3 to 9 mph S | 56% |
| Wednesday Night | 76°F | Partly Cloudy | 9 mph S | 9% |
| Thursday | 89°F | Sunny | 7 to 10 mph S | 10% |
| Thursday Night | 77°F | Mostly Clear | 10 mph S | 10% |
| Friday | 90°F | Sunny then Slight Chance Showers And Thunderstorms | 10 mph SW | 16% |
| Friday Night | 77°F | Chance Showers And Thunderstorms | 9 mph SW | 33% |
| Saturday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 8 mph SW | 35% |
| Saturday Night | 75°F | Chance Showers And Thunderstorms | 7 mph SW | 35% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 mph SW | 23% |
| Sunday Night | 76°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 23% |
| Monday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SW | 15% |
| Monday Night | 77°F | Slight Chance Showers And Thunderstorms | 6 mph SW | 17% |
Forecast source: National Weather Service (api.weather.gov) for St. George Island (38.116, -76.477). Updated through the day.
Growing snapshot for St. George Island
Last spring frost
Mar 30
First fall frost
Nov 14
Growing season
229 days
Hardiness zone
8a
More local growing data for St. George Island: nearby ZIP 20630 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, St Inigoes Webster Nolf, Md (2.3 mi from St. George Island). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.