Barnesville, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Barnesville, a town in Montgomery County, Maryland.
Overnight
52°F
Mostly Clear
Mostly clear, with a low around 52. South wind around 5 mph.
7-day forecast for Barnesville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Clear | 5 mph S | 1% |
| Wednesday | 74°F | Mostly Sunny | 6 to 10 mph S | 1% |
| Wednesday Night | 61°F | Mostly Cloudy then Rain Showers Likely | 9 mph S | 57% |
| Thursday | 73°F | Chance Rain Showers | 7 to 10 mph S | 50% |
| Thursday Night | 59°F | Chance Rain Showers | 2 to 7 mph W | 49% |
| Friday | 68°F | Chance Light Rain | 5 mph N | 49% |
| Friday Night | 48°F | Chance Light Rain then Partly Cloudy | 2 to 6 mph NW | 25% |
| Saturday | 61°F | Mostly Sunny | 7 to 16 mph NW | 7% |
| Saturday Night | 40°F | Partly Cloudy | 8 to 12 mph NW | 7% |
| Sunday | 59°F | Mostly Sunny | 7 to 13 mph NW | 2% |
| Sunday Night | 39°F | Partly Cloudy | 8 mph W | 4% |
| Monday | 60°F | Sunny | 8 to 16 mph W | 4% |
| Monday Night | 37°F | Mostly Clear | 2 to 8 mph W | 4% |
| Tuesday | 63°F | Sunny | 3 to 10 mph W | 2% |
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 Nov 4, 2026.