Mount Aetna, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mount Aetna, a community in Washington County, Maryland.
Today
86°F
Mostly Sunny
Mostly sunny, with a high near 86. East wind 2 to 6 mph.
7-day forecast for Mount Aetna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny | 2 to 6 mph E | 0% |
| Tonight | 68°F | Mostly Cloudy then Chance Rain Showers | 2 to 6 mph E | 25% |
| Wednesday | 84°F | Rain Showers Likely | 2 to 7 mph E | 69% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms | 6 mph S | 53% |
| Thursday | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 8 mph S | 54% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 2 to 7 mph S | 54% |
| Friday | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 6 mph SW | 52% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 5 mph SW | 52% |
| Saturday | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph W | 44% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 44% |
| Sunday | 89°F | Mostly Sunny | 2 to 6 mph W | 13% |
| Sunday Night | 70°F | Partly Cloudy | 5 mph SW | 13% |
| Monday | 91°F | Mostly Sunny | 2 to 10 mph W | 14% |
| Monday Night | 70°F | Partly Cloudy | 5 to 8 mph W | 14% |
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
Nearby towns & communities
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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 Aug 4, 2026.