Brentwood, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brentwood, a town in Prince George's County, Maryland.
This Afternoon
80°F
Mostly Sunny
Mostly sunny, with a high near 80. East wind around 9 mph.
7-day forecast for Brentwood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Mostly Sunny | 9 mph E | 4% |
| Tonight | 67°F | Mostly Cloudy | 8 mph SE | 10% |
| Sunday | 86°F | Mostly Cloudy then Scattered Showers And Thunderstorms | 7 to 12 mph S | 50% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 3 to 8 mph NW | 70% |
| Monday | 74°F | Chance Rain Showers | 8 to 12 mph NE | 30% |
| Monday Night | 61°F | Chance Showers And Thunderstorms | 9 mph NE | 45% |
| Tuesday | 69°F | Chance Rain Showers | 9 to 14 mph NE | 54% |
| Tuesday Night | 57°F | Chance Showers And Thunderstorms | 12 mph NE | 54% |
| Wednesday | 65°F | Chance Rain Showers | 14 mph NE | 47% |
| Wednesday Night | 57°F | Chance Rain Showers | 9 to 13 mph NE | 34% |
| Thursday | 65°F | Chance Rain Showers | 14 mph NE | 32% |
| Thursday Night | 54°F | Chance Rain Showers | 7 to 10 mph N | 27% |
| Friday | 68°F | Chance Rain Showers | 13 mph N | 26% |
| Friday Night | 54°F | Slight Chance Rain Showers | 6 to 12 mph N | 20% |
Forecast source: National Weather Service (api.weather.gov) for Brentwood (38.944, -76.957). Updated through the day.
Growing snapshot for Brentwood
Last spring frost
Mar 29
First fall frost
Nov 8
Growing season
224 days
Hardiness zone
7b
More local growing data for Brentwood: nearby ZIP 20712 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Natl Arboretum Dc, Md (2 mi from Brentwood). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.