Leonardtown, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Leonardtown, a town in St. Mary's County, Maryland.
Today
84°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. Northeast wind around 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Leonardtown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 7 mph NE | 21% |
| Tonight | 70°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 6 mph E | 73% |
| Wednesday | 86°F | Showers And Thunderstorms Likely | 2 to 8 mph S | 61% |
| Wednesday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 mph S | 21% |
| Thursday | 90°F | Mostly Sunny | 6 to 12 mph S | 11% |
| Thursday Night | 74°F | Mostly Clear | 6 to 10 mph S | 11% |
| Friday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 7 to 10 mph SW | 20% |
| Friday Night | 73°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 36% |
| Saturday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 8 mph SW | 40% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 40% |
| Sunday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SW | 23% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SW | 23% |
| Monday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 mph SW | 15% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms | 6 mph SW | 16% |
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 Aug 4, 2026.