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Tracking Major Hurricane Erin; Hot in the Mid-Mississippi Valley

Major Hurricane Erin is tracking just north of the lower Bahamas today. Dangerous surf and rip current threats increase this week for most of the Atlantic coastline. Erin's outerbands may impact the Outer Banks later this week. Hot to extremely hot temperatures are forecast today and Tuesday from a part of the southern Plains into the central to lower Mississippi River Valley. Read More >

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Overcast

74°F

23°C

Humidity 74%
Wind Speed E 7 mph
Barometer 30.14 in (1021.1 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 18 Aug 3:53 pm EDT
Extended Forecast for

Chewsville MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 64. East wind 3 to 7 mph.

    Low: 64 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers between 2pm and 3pm. Mostly cloudy, with a high near 76. East wind around 6 mph. Chance of precipitation is 20%.

    High: 76 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Mostly cloudy, with a low around 65. East wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 79. East wind 3 to 7 mph. Chance of precipitation is 30%.

    High: 79 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 20%.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 64. East wind 3 to 7 mph.
Tuesday
A slight chance of showers between 2pm and 3pm. Mostly cloudy, with a high near 76. East wind around 6 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 65. East wind 3 to 6 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 79. East wind 3 to 7 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.
Thursday
A slight chance of showers after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 65.
Saturday
Mostly sunny, with a high near 88.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 30%.
Monday
Sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chewsville MD
 39.63°N 77.71°W (Elev. 499 ft)
Last Update:
1:30 pm EDT Aug 18, 2025
Forecast Valid:
4pm EDT Aug 18, 2025-6pm EDT Aug 25, 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