Charlton, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Charlton, a community in Washington County, Maryland.
Tonight
50°F
Mostly Clear
Mostly clear, with a low around 50. Southeast wind around 5 mph.
7-day forecast for Charlton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Mostly Clear | 5 mph SE | 1% |
| Wednesday | 75°F | Mostly Sunny | 2 to 13 mph SE | 2% |
| Wednesday Night | 62°F | Mostly Cloudy then Light Rain | 7 to 10 mph S | 91% |
| Thursday | 76°F | Light Rain Likely | 3 to 9 mph S | 73% |
| Thursday Night | 57°F | Chance Light Rain | 0 to 3 mph W | 42% |
| Friday | 70°F | Chance Light Rain | 3 mph NW | 45% |
| Friday Night | 47°F | Chance Light Rain then Partly Cloudy | 1 to 5 mph NW | 40% |
| Saturday | 63°F | Mostly Sunny | 5 to 12 mph NW | 12% |
| Saturday Night | 39°F | Partly Cloudy | 3 to 7 mph NW | 12% |
| Sunday | 61°F | Mostly Sunny | 3 to 8 mph W | 7% |
| Sunday Night | 37°F | Partly Cloudy then Slight Chance Light Rain | 7 mph W | 20% |
| Monday | 60°F | Slight Chance Light Rain | 7 to 15 mph NW | 22% |
| Monday Night | 36°F | Slight Chance Light Rain then Partly Cloudy | 5 to 8 mph W | 22% |
| Tuesday | 64°F | Sunny | 6 to 14 mph W | 7% |
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 Nov 4, 2026.