Charlestown, MD Weather & Growing Conditions
This Afternoon
84°F
Mostly Sunny
Mostly sunny, with a high near 84. North wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Mostly Sunny | 10 mph N | 2% |
| Tonight | 59°F | Partly Cloudy | 9 mph N | 2% |
| Saturday | 78°F | Mostly Sunny | 10 mph E | 5% |
| Saturday Night | 64°F | Mostly Cloudy then Isolated Rain Showers | 8 mph SE | 20% |
| Sunday | 80°F | Chance Rain Showers | 7 to 14 mph S | 53% |
| Sunday Night | 65°F | Showers And Thunderstorms Likely | 6 to 10 mph W | 73% |
| Monday | 73°F | Chance Rain Showers | 8 to 12 mph NE | 41% |
| Monday Night | 59°F | Chance Rain Showers | 6 to 10 mph NE | 41% |
| Tuesday | 66°F | Chance Rain Showers | 12 mph NE | 44% |
| Tuesday Night | 55°F | Chance Rain Showers | 12 mph NE | 44% |
| Wednesday | 64°F | Chance Rain Showers | 13 mph NE | 41% |
| Wednesday Night | 55°F | Chance Showers And Thunderstorms | 12 mph NE | 40% |
| Thursday | 65°F | Chance Showers And Thunderstorms | 12 mph NE | 36% |
| Thursday Night | 54°F | Chance Showers And Thunderstorms | 5 to 8 mph NE | 36% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Charlestown, MD
Last spring frost
Apr 3
First fall frost
Nov 6
Growing season
217 days
Hardiness zone
7b
Explore more for Charlestown, MD: full frost dates · planting calendar · Maryland frost dates
Climate data from the nearest NOAA station, Conowingo Dam, Md (12.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.