Darnestown, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Darnestown, a community in Montgomery County, Maryland.
Today
85°F
Partly Sunny
Partly sunny, with a high near 85. East wind 3 to 7 mph.
7-day forecast for Darnestown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Partly Sunny | 3 to 7 mph E | 1% |
| Tonight | 70°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 1 to 7 mph E | 59% |
| Wednesday | 85°F | Rain Showers Likely | 2 to 6 mph SE | 70% |
| Wednesday Night | 72°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 6 mph S | 55% |
| Thursday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 10 mph S | 22% |
| Thursday Night | 73°F | Slight Chance Showers And Thunderstorms | 3 to 9 mph SW | 24% |
| Friday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph SW | 43% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 1 to 6 mph SW | 49% |
| Saturday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 6 mph SW | 51% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 51% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph W | 19% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SW | 19% |
| Monday | 91°F | Mostly Sunny | 1 to 7 mph W | 12% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms | 2 to 6 mph W | 15% |
Forecast source: National Weather Service (api.weather.gov) for Darnestown (39.089, -77.312). Updated through the day.
Growing snapshot for Darnestown
Last spring frost
Apr 1
First fall frost
Nov 6
Growing season
219 days
Hardiness zone
7b
More local growing data for Darnestown: nearby ZIP 20874 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Rockville 1 Ne, Md (8.5 mi from Darnestown). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.