Upper Marlboro, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Upper Marlboro, a town in Prince George's County, Maryland.
Tonight
52°F
Mostly Clear then Patchy Fog
Patchy fog after 4am. Mostly clear, with a low around 52. South wind around 6 mph.
7-day forecast for Upper Marlboro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Clear then Patchy Fog | 6 mph S | 2% |
| Wednesday | 75°F | Patchy Fog then Mostly Sunny | 3 to 9 mph S | 2% |
| Wednesday Night | 62°F | Mostly Cloudy | 7 mph S | 14% |
| Thursday | 76°F | Chance Light Rain | 9 mph S | 30% |
| Thursday Night | 63°F | Light Rain Likely | 3 to 7 mph S | 65% |
| Friday | 71°F | Rain | 5 mph NE | 78% |
| Friday Night | 51°F | Light Rain | 2 to 6 mph NW | 77% |
| Saturday | 66°F | Mostly Sunny | 6 to 10 mph NW | 11% |
| Saturday Night | 43°F | Partly Cloudy | 5 to 8 mph NW | 11% |
| Sunday | 62°F | Mostly Sunny | 8 mph W | 5% |
| Sunday Night | 42°F | Partly Cloudy then Slight Chance Light Rain | 7 mph W | 19% |
| Monday | 62°F | Slight Chance Light Rain | 8 to 13 mph NW | 20% |
| Monday Night | 40°F | Slight Chance Light Rain | 5 to 8 mph W | 20% |
| Tuesday | 65°F | Sunny | 8 to 12 mph W | 14% |
Forecast source: National Weather Service (api.weather.gov) for Upper Marlboro (38.816, -76.754). Updated through the day.
Growing snapshot for Upper Marlboro
Last spring frost
Apr 9
First fall frost
Oct 29
Growing season
203 days
Hardiness zone
7b
More local growing data for Upper Marlboro: nearby ZIP 20772 weather · frost dates · planting calendar · Maryland frost dates
Nearby towns & communities
Accokeek
Adelphi
Andrews AFB
Aquasco
Baden
Beltsville
Berwyn Heights
Bladensburg
Bowie
Brentwood
Brock Hall
Brown Station
Camp Springs
Capitol Heights
Cedar Heights
Cedarville
Cheverly
Chillum
Clinton
College Park
Colmar Manor
Cottage City
Croom
District Heights
Eagle Harbor
East Riverdale
Edmonston
Fairmount Heights
Fairwood
Forest Heights
Climate data from the nearest NOAA station, Upper Marlboro 3 Nnw, Md (5 mi from Upper Marlboro). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.