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Greater Upper Marlboro, MD Weather
Current conditions
Observed at College Park Airport · 1 hr ago
Forecast
10-day-
Sunday
Sunny, with a high near 66.
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Sunday Night
Clear, with a low around 42.
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Monday
Sunny, with a high near 69.
National Weather Service forecast updated 2 days ago.
Hourly
Hourly forecast- Now66°
- 5 PM65°
- 6 PM61°
- 7 PM57°
- 8 PM53°
- 9 PM50°
- 10 PM48°
- 11 PM46°
- Mon12 AM45°
- 1 AM45°
- 2 AM45°
- 3 AM44°
- 4 AM44°
- 5 AM43°
- 6 AM42°
- 7 AM42°
- 8 AM43°
- 9 AM48°
- 10 AM53°
- 11 AM59°
- 12 PM63°
- 1 PM65°
- 2 PM67°
- 3 PM68°
10-day forecast
Details- TonightOct 22Clear45°
- FriOct 23Sunny38°62°
- SatOct 24Sunny42°63°
- TodayOct 25Sunny42°66°
- MonOct 26Sunny49°69°
- TueOct 27Sunny48°67°
- WedOct 28Partly Sunny49°63°
- ThuOct 29Mostly Sunny67°
- FriOct 30Sunny42°60°
- SatOct 31Mostly sunny39°59°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Greater Upper Marlboro
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Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- SunModerate (53)
- MonGood (50)
- TueGood (44)
Northern Virginia and DC, DC reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyWashington Area, records since 1871. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Washington 26 km
- Arlington 31 km
- Alexandria 26 km
- Columbia 46 km
- Silver Spring 30 km
- Waldorf 28 km
- Glen Burnie 38 km
- Rockville 45 km
- Ellicott City 49 km
- Dundalk 51 km
- Bethesda 35 km
- Bowie 12 km
Forecasters' discussion
From the National Weather Service office in LWX, issued 6 hrs ago
What Has Changed
The growing season ended for Frederick MD and western Loudoun Counties. Otherwise little to no change needed to the forecast this morning.
Key Messages
- 1) Below normal low temperatures give way to a warming trend early this week.
- 2) Above normal temperatures and dry conditions continue through the end of the week.
Discussion
KEY MESSAGE 1...Below normal low temperatures give way to a warming trend early this week.
High pressure will drift southwest through Monday. As a result, expect a continuation of frost and freeze conditions tonight with seasonable temperatures during the daylight hours.
After the chilly start, temperatures will rebound well into the 60s for much of the area this afternoon. Some stratocumulus are possible at times, but may ultimately be thin and transient.
As the high drifts southwest tonight, low-level flow will turn westerly allowing for less of a marine influence. This should set us up for one more good radiational cooling night before temperatures warm under return flow early in the workweek. Tonight will be more of a ridge- valley split type of night with cooler conditions in the valleys/cold pockets/locations along and east of I-95 compared to the ridge tops given the sharp surface inversion/decoupling.
Only minor changes have been made to the previous min temperature forecasts, which are near or below the coldest guidance which performs best in radiational cooling (MOS, NBM 10th percentile and Canadian Regional).
Expect temperatures to rise above normal (upper 60s to lower 70s) by Monday afternoon as the warming airmass mixes to the surface. Minimal cloud cover and light winds will remain persistent.
Aviation
Expect VFR conditions today with some stratocu possible. NAM and related guidance continues to show more widespread low CIGS and fog late tonight into early Monday morning, with at least some hint of this in other guidance and forecast soundings.
Winds will be light out of the NE this morning shifting to SE this afternoon, then W overnight. W/NW winds AOB 10 kts Monday.
P6SM SKC with light and variable winds as high pressure dominates. A dry cold front will cross the area late Monday night with winds shifting to NW Tuesday.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use. How to use Weather