Monrovia, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monrovia, a community in Frederick County, Maryland.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. East wind around 5 mph.
7-day forecast for Monrovia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 mph E | 0% |
| Tonight | 68°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 1 to 5 mph E | 35% |
| Wednesday | 83°F | Rain Showers Likely | 5 mph SE | 74% |
| Wednesday Night | 71°F | Showers And Thunderstorms Likely | 5 mph S | 61% |
| Thursday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 8 mph S | 33% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 34% |
| Friday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 1 to 5 mph SW | 45% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 3 mph SW | 47% |
| Saturday | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 5 mph W | 42% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 to 3 mph SW | 42% |
| Sunday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph W | 16% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 mph SW | 16% |
| Monday | 90°F | Mostly Sunny | 1 to 7 mph W | 14% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms | 5 mph W | 15% |
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
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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 Aug 4, 2026.