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Clarksburg, MD Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Clarksburg, a community in Montgomery County, Maryland.

This Afternoon
77°F
Partly Sunny
Partly sunny, with a high near 77. East wind around 6 mph.

7-day forecast for Clarksburg

WhenTempForecastWindPrecip
This Afternoon 77°F Partly Sunny 6 mph E 7%
Tonight 64°F Mostly Cloudy then Slight Chance Rain Showers 8 mph SE 20%
Sunday 82°F Chance Rain Showers 8 to 12 mph S 46%
Sunday Night 60°F Showers And Thunderstorms Likely 3 to 13 mph W 68%
Monday 69°F Chance Rain Showers 8 to 13 mph N 36%
Monday Night 55°F Chance Rain Showers 6 to 10 mph NE 45%
Tuesday 62°F Rain Showers Likely 13 mph NE 61%
Tuesday Night 52°F Rain Showers Likely 14 mph NE 61%
Wednesday 58°F Chance Rain Showers 15 mph NE 49%
Wednesday Night 52°F Chance Rain Showers 10 to 14 mph NE 46%
Thursday 61°F Chance Rain Showers 14 mph NE 46%
Thursday Night 51°F Chance Rain Showers 6 to 10 mph NE 37%
Friday 66°F Slight Chance Rain Showers 10 mph N 18%
Friday Night 50°F Slight Chance Rain Showers 6 to 9 mph N 15%

Forecast source: National Weather Service (api.weather.gov) for Clarksburg (39.223, -77.266). Updated through the day.

Growing snapshot for Clarksburg

Last spring frost
Apr 14
First fall frost
Oct 29
Growing season
196 days
Hardiness zone
7b

More local growing data for Clarksburg: nearby ZIP 20876 weather · frost dates · planting calendar · Maryland frost dates

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Climate data from the nearest NOAA station, Damascus 3 Ssw, Md (4 mi from Clarksburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.