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

Severe Thunderstorms and Critical Fire Weather Wednesday

Scattered severe thunderstorms are possible across portions of the northern High Plains Wednesday afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin Wednesday. Read More >

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Fair

54°F

12°C

Humidity 78%
Wind Speed S 8 mph
Barometer 30.09 in
Dewpoint 47°F (8°C)
Visibility 7.00 mi
Wind Chill52°F (11°C)
Last update 12 May 11:35 pm EDT
Extended Forecast for

Jarrettsville MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. South wind 8 to 11 mph, with gusts as high as 22 mph.

    Low: 52 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 71. South wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 71 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms before 4am, then a slight chance of showers after 5am. Low around 50. South wind 6 to 11 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Showers

  • Thursday

    Thursday: Increasing clouds, with a high near 62. Northwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 62 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. Northwest wind 11 to 13 mph, with gusts as high as 22 mph.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 52. South wind 8 to 11 mph, with gusts as high as 22 mph.
Wednesday
A chance of showers between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 71. South wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Wednesday Night
Showers and thunderstorms before 4am, then a slight chance of showers after 5am. Low around 50. South wind 6 to 11 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Increasing clouds, with a high near 62. Northwest wind 10 to 14 mph, with gusts as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 48. Northwest wind 11 to 13 mph, with gusts as high as 22 mph.
Friday
Mostly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 62.
Monday
Sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
A chance of showers. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Jarrettsville MD
 39.61°N 76.47°W (Elev. 574 ft)
Last Update:
10:53 pm EDT May 12, 2026
Forecast Valid:
11pm EDT May 12, 2026-6pm EDT May 19, 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