Rosemont, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rosemont, a village in Frederick County, Maryland.
This Afternoon
83°F
Isolated Rain Showers
Isolated rain showers. Mostly cloudy, with a high near 83. North wind around 10 mph. Chance of precipitation is 20%.
7-day forecast for Rosemont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 83°F | Isolated Rain Showers | 10 mph N | 20% |
| Tonight | 58°F | Isolated Rain Showers then Mostly Cloudy | 6 to 9 mph N | 20% |
| Saturday | 77°F | Partly Sunny | 6 to 9 mph E | 5% |
| Saturday Night | 65°F | Mostly Cloudy then Scattered Rain Showers | 8 mph SE | 30% |
| Sunday | 81°F | Showers And Thunderstorms Likely | 8 to 14 mph S | 73% |
| Sunday Night | 63°F | Showers And Thunderstorms Likely | 3 to 8 mph NW | 73% |
| Monday | 71°F | Chance Rain Showers | 7 to 12 mph NE | 40% |
| Monday Night | 59°F | Rain Showers Likely | 7 to 10 mph NE | 59% |
| Tuesday | 63°F | Rain Showers Likely | 12 mph NE | 72% |
| Tuesday Night | 54°F | Showers And Thunderstorms Likely | 13 mph NE | 72% |
| Wednesday | 60°F | Rain Showers Likely | 13 mph NE | 56% |
| Wednesday Night | 53°F | Chance Showers And Thunderstorms | 8 to 12 mph NE | 53% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 8 to 12 mph NE | 53% |
| Thursday Night | 53°F | Chance Rain Showers | 3 to 7 mph N | 35% |
Forecast source: National Weather Service (api.weather.gov) for Rosemont (39.334, -77.623). Updated through the day.
Growing snapshot for Rosemont
Last spring frost
Apr 26
First fall frost
Oct 18
Growing season
175 days
Hardiness zone
7a
More local growing data for Rosemont: nearby ZIP 21716 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Adamstown
Bagtown
Ballenger Creek
Bartonsville
Braddock Heights
Brunswick
Buckeystown
Burkittsville
Emmitsburg
Frederick
Garretts Mill
Graceham
Green Valley
Jefferson
Lewistown
Libertytown
Linganore
Middletown
Monrovia
Mount Airy
Myersville
New Market
Point of Rocks
Sabillasville
Sandy Hook
Spring Ridge
Thurmont
Union Bridge
Urbana
Walkersville
Climate data from the nearest NOAA station, Sharpsburg 5 S, Md (7.5 mi from Rosemont). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.