National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Weather Across the Center of the Nation; Fire Weather Concerns for Southwest and California; Snow for the Central Rockies

Severe thunderstorms will continue to impact the center of the Nation through today. Very large hail, strong tornadoes, and damaging winds are expected from the Great Lakes into the central/southern Plains; Flash flooding is possible for portions into the mid-Mississippi Valley. Critical fire weather conditions for the Southwest and central valley of California today. Winter hangs on for Rockies. Read More >

Hazardous Weather Conditions

Current conditions at

Baltimore, Inner Harbor (KDMH)

Lat: 39.28°NLon: 76.62°WElev: 20ft.

73°F

23°C

Humidity 71%
Wind Speed NA
Barometer 30.18 in (1021.9 mb)
Dewpoint 63°F (17°C)
Visibility NA
Last update 18 May 7:53 am EDT
Extended Forecast for

Marriottsville MD

  • Today

    Today: Sunny, with a high near 93. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 69. South wind 3 to 6 mph.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. Southwest wind 3 to 8 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 71. Southwest wind around 5 mph.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm after 2pm. High near 92. West wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 90%.

    High: 92 °F

    Sunny then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 56. Chance of precipitation is 80%.

    Low: 56 °F

    Showers

  • Thursday

    Thursday: A chance of showers after 8am. Mostly cloudy, with a high near 68. Chance of precipitation is 50%.

    High: 68 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.

    Low: 52 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 93. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 69. South wind 3 to 6 mph.
Tuesday
Sunny, with a high near 94. Southwest wind 3 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 71. Southwest wind around 5 mph.
Wednesday
Showers and possibly a thunderstorm after 2pm. High near 92. West wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 90%.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 56. Chance of precipitation is 80%.
Thursday
A chance of showers after 8am. Mostly cloudy, with a high near 68. Chance of precipitation is 50%.
Thursday Night
A chance of showers after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Friday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Friday Night
Showers likely. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.
Saturday
Showers likely. Mostly cloudy, with a high near 72. Chance of precipitation is 60%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Sunday
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marriottsville MD
 39.36°N 76.89°W (Elev. 413 ft)
Last Update:
7:53 am EDT May 18, 2026
Forecast Valid:
8am EDT May 18, 2026-6pm EDT May 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation