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

Heavy Rain in the Ohio and Tennessee Valleys; Watching for Tropical Cyclone Development in the Atlantic

Heavy to excessive rainfall may bring areas of flash and urban flooding over portions of the Ohio and Tennessee Valleys. Two tropical waves in the Atlantic are being monitored for tropical cyclone formation within the next few days. One tropical wave will bring periods of heavy rain, thunderstorms, flood risk, and landslides to Puerto Rico and the US Virgin Islands through Friday morning. Read More >

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Light Rain Fog/Mist

72°F

22°C

Humidity 100%
Wind Speed E 5 mph
Barometer 29.99 in
Dewpoint 72°F (22°C)
Visibility 4.00 mi
Last update 24 Sep 5:05 pm EDT
Extended Forecast for

Jarrettsville MD

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Cloudy, with a high near 75. South wind around 6 mph. Chance of precipitation is 40%.

    High: 75 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely. Cloudy, with a low around 67. Southeast wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 75. South wind 6 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 75 °F

    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 11pm, then showers likely between 11pm and 2am. Low around 64. Southwest wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 64 °F

    Showers

  • Friday

    Friday: Mostly sunny, with a high near 78. Northwest wind around 6 mph.

    High: 78 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 30%.

    High: 75 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Cloudy, with a low around 62. Chance of precipitation is 40%.

    Low: 62 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 73. Chance of precipitation is 40%.

    High: 73 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Cloudy, with a high near 75. South wind around 6 mph. Chance of precipitation is 40%.
Tonight
Showers and thunderstorms likely. Cloudy, with a low around 67. Southeast wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 75. South wind 6 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before 11pm, then showers likely between 11pm and 2am. Low around 64. Southwest wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Mostly sunny, with a high near 78. Northwest wind around 6 mph.
Friday Night
Mostly cloudy, with a low around 61.
Saturday
A chance of showers after 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Cloudy, with a low around 62. Chance of precipitation is 40%.
Sunday
A chance of showers. Mostly cloudy, with a high near 73. Chance of precipitation is 40%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.
Monday
A chance of showers. Mostly cloudy, with a high near 75. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Tuesday
A chance of showers. Partly sunny, with a high near 72. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 68.
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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:
4:30 pm EDT Sep 24, 2025
Forecast Valid:
5pm EDT Sep 24, 2025-6pm EDT Oct 1, 2025
 
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