Derwood, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Derwood, a community in Montgomery County, Maryland.
This Afternoon
78°F
Partly Sunny
Partly sunny, with a high near 78. East wind around 6 mph.
7-day forecast for Derwood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Partly Sunny | 6 mph E | 5% |
| Tonight | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 7 mph SE | 17% |
| Sunday | 83°F | Chance Rain Showers | 7 to 10 mph S | 36% |
| Sunday Night | 61°F | Showers And Thunderstorms Likely | 3 to 10 mph W | 69% |
| Monday | 70°F | Chance Rain Showers | 7 to 10 mph NE | 34% |
| Monday Night | 56°F | Chance Rain Showers | 6 to 9 mph NE | 44% |
| Tuesday | 63°F | Rain Showers Likely | 13 mph NE | 59% |
| Tuesday Night | 53°F | Rain Showers Likely | 10 to 14 mph NE | 59% |
| Wednesday | 59°F | Chance Rain Showers | 14 mph NE | 48% |
| Wednesday Night | 53°F | Chance Rain Showers | 13 mph NE | 46% |
| Thursday | 61°F | Chance Rain Showers | 13 mph NE | 46% |
| Thursday Night | 51°F | Chance Rain Showers | 6 to 10 mph N | 37% |
| Friday | 66°F | Slight Chance Rain Showers | 10 mph N | 17% |
| Friday Night | 51°F | Slight Chance Rain Showers | 5 to 9 mph N | 15% |
Forecast source: National Weather Service (api.weather.gov) for Derwood (39.114, -77.150). Updated through the day.
Growing snapshot for Derwood
Last spring frost
Apr 1
First fall frost
Nov 6
Growing season
219 days
Hardiness zone
7b
More local growing data for Derwood: nearby ZIP 20855 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Rockville 1 Ne, Md (2.7 mi from Derwood). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.