Monrovia, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monrovia, a community in Frederick County, Maryland.
This Afternoon
77°F
Partly Sunny
Partly sunny, with a high near 77. East wind around 5 mph.
7-day forecast for Monrovia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Partly Sunny | 5 mph E | 8% |
| Tonight | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 9 mph SE | 21% |
| Sunday | 81°F | Showers And Thunderstorms Likely | 7 to 12 mph S | 56% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 2 to 13 mph W | 73% |
| Monday | 68°F | Chance Rain Showers | 7 to 13 mph NE | 37% |
| Monday Night | 53°F | Chance Rain Showers | 6 to 9 mph NE | 47% |
| Tuesday | 62°F | Rain Showers Likely | 13 mph NE | 62% |
| Tuesday Night | 50°F | Rain Showers Likely | 14 mph NE | 61% |
| Wednesday | 58°F | Chance Rain Showers | 14 mph NE | 47% |
| Wednesday Night | 51°F | Chance Rain Showers | 13 mph NE | 47% |
| Thursday | 61°F | Chance Rain Showers | 13 mph NE | 47% |
| Thursday Night | 50°F | Chance Rain Showers | 5 to 9 mph NE | 37% |
| Friday | 65°F | Slight Chance Rain Showers | 10 mph N | 18% |
| Friday Night | 49°F | Slight Chance Rain Showers | 5 to 9 mph N | 16% |
Forecast source: National Weather Service (api.weather.gov) for Monrovia (39.359, -77.275). Updated through the day.
Growing snapshot for Monrovia
Last spring frost
Apr 14
First fall frost
Oct 29
Growing season
196 days
Hardiness zone
7a
More local growing data for Monrovia: nearby ZIP 21770 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
Mount Airy
Myersville
New Market
Point of Rocks
Rosemont
Sabillasville
Sandy Hook
Spring Ridge
Thurmont
Union Bridge
Urbana
Walkersville
Climate data from the nearest NOAA station, Damascus 3 Ssw, Md (6 mi from Monrovia). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.