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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

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Overcast

70°F

21°C

Humidity 83%
Wind Speed E 9 mph
Barometer 30.16 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 18 Aug 3:15 pm EDT
Extended Forecast for

3 Miles NNW Coatesville PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. East wind around 5 mph.

    Low: 62 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 74. East wind around 10 mph.

    High: 74 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 60. East wind around 5 mph.

    Low: 60 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after 2pm. Partly sunny, with a high near 78. East wind around 5 mph. Chance of precipitation is 20%.

    High: 78 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers. Mostly cloudy, with a low around 63. East wind around 5 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers after 2pm. Mostly sunny, with a high near 81. Chance of precipitation is 20%.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Friday Night

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

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 62. East wind around 5 mph.
Tuesday
Partly sunny, with a high near 74. East wind around 10 mph.
Tuesday Night
Mostly cloudy, with a low around 60. East wind around 5 mph.
Wednesday
A slight chance of showers after 2pm. Partly sunny, with a high near 78. East wind around 5 mph. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 63. East wind around 5 mph. Chance of precipitation is 20%.
Thursday
A slight chance of showers after 2pm. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Coatesville PA
 40.03°N 75.84°W (Elev. 581 ft)
Last Update:
4:11 am EDT Aug 18, 2025
Forecast Valid:
3pm 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