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

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Fair

34°F

1°C

Humidity 50%
Wind Speed SW 6 mph
Barometer 30.13 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 13 Jan 3:15 am EST
Extended Forecast for

3 Miles NNW Jarrettsville MD

  • Overnight

    Overnight: Mostly clear, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 46. Calm wind becoming south 5 to 9 mph in the morning.

    High: 46 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain after 4am. Mostly cloudy, with a low around 37. Southwest wind 6 to 9 mph. Chance of precipitation is 20%.

    Low: 37 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, mainly after 1pm. Cloudy, with a high near 49. Southwest wind around 6 mph. Chance of precipitation is 50%.

    High: 49 °F

    Slight Chance
    Rain then
    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 4am, then a chance of snow. Cloudy, with a low around 24. Light and variable wind becoming northwest 12 to 17 mph in the evening. Winds could gust as high as 31 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 24 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: A chance of snow before 7am. Partly sunny, with a high near 29. Chance of precipitation is 30%.

    High: 29 °F

    Chance Snow
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 28. Calm wind.
Tuesday
Sunny, with a high near 46. Calm wind becoming south 5 to 9 mph in the morning.
Tuesday Night
A slight chance of rain after 4am. Mostly cloudy, with a low around 37. Southwest wind 6 to 9 mph. Chance of precipitation is 20%.
Wednesday
A chance of rain, mainly after 1pm. Cloudy, with a high near 49. Southwest wind around 6 mph. Chance of precipitation is 50%.
Wednesday Night
Rain likely before 4am, then a chance of snow. Cloudy, with a low around 24. Light and variable wind becoming northwest 12 to 17 mph in the evening. Winds could gust as high as 31 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
A chance of snow before 7am. Partly sunny, with a high near 29. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 15.
Friday
Mostly sunny, with a high near 31.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Mostly sunny, with a high near 40.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Partly sunny, with a high near 32.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Mostly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Jarrettsville MD
 39.66°N 76.49°W (Elev. 449 ft)
Last Update:
12:53 am EST Jan 13, 2026
Forecast Valid:
3am EST Jan 13, 2026-6pm EST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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