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

Flooding Risks from Tropical Moisture Across the Intermountain West and East Coast

Tropical moisture from Isaias and Rachel will impact portions of the Intermountain West and East Coast states. Flooding, gusty winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, record warmth will spread northward across the Mississippi Valley the next few days. Looking for snow, the first winter storm of the season is underway across the northern Rockies. Read More >

Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Light Rain Fog/Mist

57°F

14°C

Humidity 100%
Wind Speed E 14 mph
Barometer 30.18 in
Dewpoint 57°F (14°C)
Visibility 2.00 mi
Last update 11 Oct 10:55 am EDT
Extended Forecast for

Bart PA

  • Today

    Today: Rain, with thunderstorms also possible after 5pm. High near 63. East wind 14 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 63 °F

    Rain

  • Tonight

    Tonight: Rain and possibly a thunderstorm before midnight, then rain likely. Low around 59. Northeast wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Rain

  • Columbus Day

    Columbus Day: A chance of rain, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 70. North wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Chance Rain
    then Partly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. Light south wind increasing to 5 to 10 mph in the morning.

    High: 74 °F

    Sunny

  • Tuesday Night

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

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

Today
Rain, with thunderstorms also possible after 5pm. High near 63. East wind 14 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
Rain and possibly a thunderstorm before midnight, then rain likely. Low around 59. Northeast wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Columbus Day
A chance of rain, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 70. North wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly clear, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 74. Light south wind increasing to 5 to 10 mph in the morning.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
A chance of showers after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.
Friday
A chance of showers. Mostly cloudy, with a high near 66. Chance of precipitation is 50%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 57. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bart PA
 39.95°N 76.09°W (Elev. 673 ft)
Last Update:
8:21 am EDT Oct 11, 2026
Forecast Valid:
11am EDT Oct 11, 2026-6pm EDT Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation