Leonardtown, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Leonardtown, a town in St. Mary's County, Maryland.
Tonight
65°F
Partly Cloudy
Partly cloudy, with a low around 65. Northeast wind around 8 mph.
7-day forecast for Leonardtown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Partly Cloudy | 8 mph NE | 10% |
| Saturday | 80°F | Partly Sunny | 10 mph NE | 10% |
| Saturday Night | 67°F | Mostly Cloudy | 9 mph SE | 10% |
| Sunday | 83°F | Mostly Sunny | 7 to 12 mph S | 10% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 6 to 10 mph SW | 49% |
| Monday | 78°F | Chance Showers And Thunderstorms | 7 to 10 mph N | 47% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 8 to 12 mph NE | 50% |
| Tuesday | 71°F | Rain Showers Likely | 13 to 17 mph NE | 56% |
| Tuesday Night | 60°F | Rain Showers Likely | 14 to 17 mph NE | 56% |
| Wednesday | 67°F | Chance Rain Showers | 17 mph NE | 50% |
| Wednesday Night | 60°F | Chance Showers And Thunderstorms | 13 to 17 mph NE | 50% |
| Thursday | 68°F | Chance Showers And Thunderstorms | 17 mph NE | 40% |
| Thursday Night | 58°F | Chance Showers And Thunderstorms | 7 to 15 mph N | 36% |
| Friday | 70°F | Slight Chance Rain Showers | 10 to 14 mph N | 24% |
Forecast source: National Weather Service (api.weather.gov) for Leonardtown (38.304, -76.640). Updated through the day.
Growing snapshot for Leonardtown
Last spring frost
Mar 22
First fall frost
Nov 26
Growing season
248 days
Hardiness zone
7b
More local growing data for Leonardtown: nearby ZIP 20650 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
California
Callaway
Lexington Park
Mechanicsville
Piney Point
St. George Island
Tall Timbers
Wildewood
Climate data from the nearest NOAA station, Solomons, Md (10.6 mi from Leonardtown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.