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

Thunderstorms and Heavy Rains in the Appalachians

Multiple rounds of moderate to locally heavy rain will impact portions of the Appalachians and Mid-Atlantic, which may lead to flash flooding concerns. Thunderstorms with isolated severe wind gusts will be possible this afternoon from parts of the Southeast into the southern and central Appalachians. A multi-day heavy rain will pose a flash flood threat in New Mexico beginning Tuesday. Read More >

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Overcast

63°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 30.08 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 21 Sep 7:15 pm EDT
Extended Forecast for

Bel Air MD

  • Tonight

    Tonight: Showers likely, mainly after 2am. Cloudy, with a low around 59. East wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 59 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. Patchy fog after 9am. High near 62. Northeast wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 62 °F

    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Showers, mainly before 8pm, then a chance of rain after 2am. Low around 52. Northeast wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 52 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of rain, mainly before 2pm. Cloudy, with a high near 65. Northeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 65 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 52. Northeast wind around 11 mph, with gusts as high as 18 mph.

    Low: 52 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers after 2pm. Mostly sunny, with a high near 66. Chance of precipitation is 20%.

    High: 66 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers likely, mainly after 2am. Cloudy, with a low around 59. East wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Showers and possibly a thunderstorm. Patchy fog after 9am. High near 62. Northeast wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers, mainly before 8pm, then a chance of rain after 2am. Low around 52. Northeast wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A chance of rain, mainly before 2pm. Cloudy, with a high near 65. Northeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Wednesday Night
Mostly cloudy, with a low around 52. Northeast wind around 11 mph, with gusts as high as 18 mph.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Mostly cloudy, with a low around 50.
Friday
A slight chance of showers after 2pm. Mostly sunny, with a high near 66. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bel Air MD
 39.53°N 76.36°W (Elev. 331 ft)
Last Update:
4:53 pm EDT Sep 21, 2026
Forecast Valid:
7pm EDT Sep 21, 2026-6pm EDT Sep 28, 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