St. Leonard, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Leonard, a community in Calvert County, Maryland.
Today
73°F
Mostly Sunny
Mostly sunny, with a high near 73. South wind 6 to 9 mph.
7-day forecast for St. Leonard
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Mostly Sunny | 6 to 9 mph S | 1% |
| Tonight | 63°F | Mostly Cloudy | 9 mph S | 4% |
| Thursday | 74°F | Slight Chance Rain Showers | 10 mph S | 22% |
| Thursday Night | 64°F | Showers And Thunderstorms | 7 mph S | 81% |
| Friday | 69°F | Showers And Thunderstorms then Light Rain | 2 to 7 mph SW | 88% |
| Friday Night | 54°F | Light Rain | 2 to 8 mph N | 76% |
| Saturday | 63°F | Mostly Sunny | 12 mph NW | 5% |
| Saturday Night | 47°F | Mostly Clear | 12 mph NW | 4% |
| Sunday | 59°F | Sunny | 7 to 13 mph NW | 3% |
| Sunday Night | 47°F | Mostly Clear | 6 to 9 mph W | 6% |
| Monday | 60°F | Sunny | 8 to 15 mph NW | 6% |
| Monday Night | 46°F | Mostly Clear | 7 mph W | 6% |
| Tuesday | 63°F | Sunny | 6 to 10 mph SW | 3% |
| Tuesday Night | 48°F | Mostly Clear | 7 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for St. Leonard (38.467, -76.499). Updated through the day.
Growing snapshot for St. Leonard
Last spring frost
Mar 22
First fall frost
Nov 26
Growing season
248 days
Hardiness zone
8a
More local growing data for St. Leonard: nearby ZIP 20685 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Broomes Island
Calvert Beach
Chesapeake Ranch Estates
Drum Point
Dunkirk
Huntingtown
Long Beach
Lusby
Owings
Prince Frederick
Solomons
Climate data from the nearest NOAA station, Solomons, Md (8.9 mi from St. Leonard). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.