Mount Aetna, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mount Aetna, a community in Washington County, Maryland.
This Afternoon
81°F
Isolated Rain Showers
Isolated rain showers. Partly sunny, with a high near 81. North wind around 10 mph. Chance of precipitation is 20%.
7-day forecast for Mount Aetna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Isolated Rain Showers | 10 mph N | 20% |
| Tonight | 57°F | Isolated Rain Showers then Partly Cloudy | 9 mph NE | 20% |
| Saturday | 76°F | Partly Sunny | 9 mph E | 5% |
| Saturday Night | 65°F | Scattered Rain Showers | 9 mph SE | 40% |
| Sunday | 79°F | Showers And Thunderstorms | 9 to 13 mph S | 79% |
| Sunday Night | 62°F | Showers And Thunderstorms | 3 to 9 mph NW | 79% |
| Monday | 70°F | Chance Rain Showers | 8 to 12 mph NE | 40% |
| Monday Night | 58°F | Rain Showers Likely | 7 to 13 mph NE | 58% |
| Tuesday | 62°F | Rain Showers Likely | 10 to 14 mph NE | 73% |
| Tuesday Night | 53°F | Showers And Thunderstorms Likely | 12 to 15 mph NE | 73% |
| Wednesday | 58°F | Rain Showers Likely | 10 to 15 mph NE | 56% |
| Wednesday Night | 53°F | Chance Showers And Thunderstorms | 10 to 14 mph NE | 53% |
| Thursday | 61°F | Chance Showers And Thunderstorms | 8 to 14 mph NE | 51% |
| Thursday Night | 53°F | Chance Rain Showers | 8 mph N | 36% |
Forecast source: National Weather Service (api.weather.gov) for Mount Aetna (39.599, -77.613). Updated through the day.
Growing snapshot for Mount Aetna
Last spring frost
Apr 25
First fall frost
Oct 19
Growing season
176 days
Hardiness zone
7a
More local growing data for Mount Aetna: nearby ZIP 21783 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Smithsburg 2Nw, Md (1.8 mi from Mount Aetna). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.