Charlton, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Charlton, a community in Washington County, Maryland.
Tonight
57°F
Partly Cloudy
Partly cloudy, with a low around 57. North wind around 8 mph.
7-day forecast for Charlton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Partly Cloudy | 8 mph N | 2% |
| Saturday | 77°F | Partly Sunny | 8 mph E | 5% |
| Saturday Night | 66°F | Scattered Rain Showers | 5 to 8 mph SE | 30% |
| Sunday | 81°F | Showers And Thunderstorms | 8 to 13 mph S | 80% |
| Sunday Night | 62°F | Showers And Thunderstorms | 3 to 8 mph NW | 80% |
| Monday | 71°F | Chance Rain Showers | 7 to 12 mph NE | 43% |
| Monday Night | 58°F | Rain Showers Likely | 6 to 9 mph NE | 65% |
| Tuesday | 63°F | Showers And Thunderstorms | 9 mph NE | 77% |
| Tuesday Night | 53°F | Showers And Thunderstorms | 10 mph NE | 77% |
| Wednesday | 59°F | Rain Showers Likely | 10 mph NE | 60% |
| Wednesday Night | 53°F | Showers And Thunderstorms Likely | 6 to 9 mph NE | 56% |
| Thursday | 63°F | Chance Showers And Thunderstorms | 9 mph NE | 52% |
| Thursday Night | 53°F | Chance Rain Showers | 2 to 6 mph N | 34% |
| Friday | 68°F | Chance Rain Showers | 5 to 8 mph N | 26% |
Forecast source: National Weather Service (api.weather.gov) for Charlton (39.634, -77.894). Updated through the day.
Growing snapshot for Charlton
Last spring frost
Apr 7
First fall frost
Nov 4
Growing season
209 days
Hardiness zone
7a
More local growing data for Charlton: nearby ZIP 21722 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Hagerstown Washington Co Ap, Md (10.2 mi from Charlton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.