Charlestown, MD Weather & Growing Conditions
Overnight
64°F
Mostly Cloudy
Mostly cloudy, with a low around 64. Northeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Mostly Cloudy | 3 mph NE | 0% |
| Tuesday | 85°F | Mostly Sunny | 5 mph NE | 0% |
| Tuesday Night | 68°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 2 mph E | 16% |
| Wednesday | 84°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph SE | 71% |
| Wednesday Night | 73°F | Chance Showers And Thunderstorms | 3 mph S | 48% |
| Thursday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 9 mph SW | 21% |
| Thursday Night | 74°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 34% |
| Friday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph SW | 34% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 5 mph SW | 47% |
| Saturday | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph SW | 38% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 3 mph SW | 38% |
| Sunday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph W | 16% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SW | 16% |
| Monday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 7 mph W | 17% |
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 (11.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.