Barnesville, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Barnesville, a town in Montgomery County, Maryland.
Tonight
59°F
Mostly Cloudy
Mostly cloudy, with a low around 59. Northeast wind around 9 mph.
7-day forecast for Barnesville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Mostly Cloudy | 9 mph NE | 2% |
| Saturday | 77°F | Partly Sunny | 9 mph E | 5% |
| Saturday Night | 66°F | Mostly Cloudy then Scattered Rain Showers | 9 mph SE | 30% |
| Sunday | 81°F | Rain Showers Likely | 8 to 14 mph S | 63% |
| Sunday Night | 63°F | Showers And Thunderstorms Likely | 3 to 9 mph NW | 69% |
| Monday | 72°F | Chance Rain Showers | 8 to 12 mph NE | 40% |
| Monday Night | 59°F | Rain Showers Likely | 8 to 12 mph NE | 56% |
| Tuesday | 63°F | Rain Showers Likely | 13 mph NE | 63% |
| Tuesday Night | 54°F | Rain Showers Likely | 14 mph NE | 63% |
| Wednesday | 60°F | Chance Rain Showers | 14 mph NE | 54% |
| Wednesday Night | 53°F | Chance Showers And Thunderstorms | 9 to 13 mph NE | 51% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 9 to 13 mph NE | 50% |
| Thursday Night | 53°F | Chance Showers And Thunderstorms | 5 to 8 mph N | 36% |
| Friday | 66°F | Slight Chance Rain Showers | 10 mph N | 23% |
Forecast source: National Weather Service (api.weather.gov) for Barnesville (39.224, -77.376). Updated through the day.
Growing snapshot for Barnesville
Last spring frost
Apr 14
First fall frost
Oct 29
Growing season
196 days
Hardiness zone
7a
More local growing data for Barnesville: nearby ZIP 20838 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Damascus 3 Ssw, Md (7.9 mi from Barnesville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.