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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

A Few Clouds

74°F

23°C

Humidity 100%
Wind Speed S 3 mph
Barometer 30.10 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Last update 17 Sep 8:35 pm EDT
Extended Forecast for

2 Miles NNE Jarrettsville MD

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 69. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 30%.

    Low: 69 °F

    Scattered
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81. North wind 6 to 9 mph.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. North wind around 7 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 76. Northeast wind 5 to 7 mph becoming southeast in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 63. Southeast wind around 8 mph. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 77. Chance of precipitation is 80%.

    High: 77 °F

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 63. Chance of precipitation is 80%.

    Low: 63 °F

    Showers

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 71. Chance of precipitation is 50%.

    High: 71 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Tonight
Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 69. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 81. North wind 6 to 9 mph.
Friday Night
Mostly clear, with a low around 57. North wind around 7 mph.
Saturday
Mostly sunny, with a high near 76. Northeast wind 5 to 7 mph becoming southeast in the afternoon.
Saturday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 63. Southeast wind around 8 mph. Chance of precipitation is 40%.
Sunday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 77. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 63. Chance of precipitation is 80%.
Monday
A chance of showers. Mostly cloudy, with a high near 71. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 61. Chance of precipitation is 50%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 60. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 63. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Jarrettsville MD
 39.63°N 76.46°W (Elev. 597 ft)
Last Update:
7:53 pm EDT Sep 17, 2026
Forecast Valid:
8pm EDT Sep 17, 2026-6pm EDT Sep 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