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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Thunderstorm in Vicinity

80°F

27°C

Humidity 88%
Wind Speed NE 18 mph
Barometer 29.87 in
Dewpoint 76°F (24°C)
Visibility 9.00 mi
Heat Index85°F (29°C)
Last update 17 Aug 6:25 pm EDT
Extended Forecast for

4 Miles E Rising Sun MD

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 66. Southwest wind around 6 mph becoming light and variable. Chance of precipitation is 50%.

    Low: 66 °F

    Scattered
    Showers then
    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers between 2pm and 5pm. Mostly cloudy, with a high near 74. Northeast wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 74 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 62. East wind around 6 mph. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 76. East wind around 8 mph.

    High: 76 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 61. East wind 3 to 6 mph.

    Low: 61 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 20%.

    High: 80 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 66. Southwest wind around 6 mph becoming light and variable. Chance of precipitation is 50%.
Monday
A slight chance of showers between 2pm and 5pm. Mostly cloudy, with a high near 74. Northeast wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Monday Night
A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 62. East wind around 6 mph. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 76. East wind around 8 mph.
Tuesday Night
Partly cloudy, with a low around 61. East wind 3 to 6 mph.
Wednesday
A slight chance of showers after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 61.
Friday
Mostly sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 63.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
A chance of showers. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Rising Sun MD
 39.69°N 75.99°W (Elev. 400 ft)
Last Update:
5:23 pm EDT Aug 17, 2025
Forecast Valid:
6pm EDT Aug 17, 2025-6pm EDT Aug 24, 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