Rosemont, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rosemont, a village in Frederick County, Maryland.
This Afternoon
71°F
Sunny
Sunny, with a high near 71. Southeast wind around 8 mph.
7-day forecast for Rosemont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Sunny | 8 mph SE | 2% |
| Tonight | 50°F | Mostly Clear then Patchy Fog | 6 mph SE | 2% |
| Wednesday | 74°F | Patchy Fog then Mostly Sunny | 3 to 14 mph S | 2% |
| Wednesday Night | 61°F | Mostly Cloudy then Light Rain | 6 to 10 mph S | 80% |
| Thursday | 75°F | Light Rain Likely | 7 to 10 mph S | 73% |
| Thursday Night | 59°F | Chance Light Rain | 0 to 5 mph SW | 49% |
| Friday | 70°F | Chance Light Rain | 3 mph NW | 51% |
| Friday Night | 48°F | Chance Light Rain | 1 to 5 mph NW | 43% |
| Saturday | 64°F | Mostly Sunny | 5 to 12 mph NW | 11% |
| Saturday Night | 40°F | Partly Cloudy | 5 to 8 mph NW | 11% |
| Sunday | 61°F | Mostly Sunny | 5 to 9 mph W | 7% |
| Sunday Night | 39°F | Partly Cloudy then Slight Chance Light Rain | 5 to 8 mph W | 20% |
| Monday | 61°F | Slight Chance Light Rain | 8 to 16 mph NW | 21% |
| Monday Night | 37°F | Slight Chance Light Rain | 3 to 8 mph W | 21% |
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 Nov 4, 2026.