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Heavy Rain and Potential for Flash Flooding

Strong to severe thunderstorms are forecast to develop along a frontal system stretching from portions of the Mississippi Valley into the Ohio Valley. These storms may produce heavy rain and flash flooding. The threat shifts east on Friday. Moonsoon moisture will continue to produce heavy rain with the possibility of localized flash flooding in the Four Corners area. Read More >

Current conditions at

Pottstown, Pottstown Limerick Airport (KPTW)

Lat: 40.24°NLon: 75.55°WElev: 288ft.

Fog/Mist

68°F

20°C

Humidity 100%
Wind Speed Calm
Barometer 29.87 in (1010.8 mb)
Dewpoint 68°F (20°C)
Visibility 1.00 mi
Last update 28 Jul 2:54 am EDT
Extended Forecast for

Downingtown PA

Flash Flood Watch July 28, 02:00pm until July 29, 02:00pm
Click here for hazard details and duration
Flash Flood Watch
  • Overnight

    Overnight: Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 70. Calm wind.

    Patchy Fog

    Low: 70 °F

  • Friday

    Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rain.  Patchy fog before 8am. High near 81. East wind 3 to 5 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Heavy Rain
    and Patchy
    Fog then
    Heavy Rain

    High: 81 °F

  • Friday
    Night

    Friday Night: Rain. The rain could be heavy at times.  Low around 66. Northeast wind 7 to 13 mph.  Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.

    Heavy Rain

    Low: 66 °F

  • Saturday

    Saturday: Rain. The rain could be heavy at times.  High near 69. Northeast wind 15 to 17 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Heavy Rain

    High: 69 °F

  • Saturday
    Night

    Saturday Night: A chance of showers.  Mostly cloudy, with a low around 59. Northeast wind 10 to 14 mph.  Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    Chance
    Showers

    Low: 59 °F

  • Sunday

    Sunday: A chance of showers.  Mostly sunny, with a high near 77. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Chance
    Showers

    High: 77 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 60.

    Mostly Clear

    Low: 60 °F

  • Monday

    Monday: Mostly sunny, with a high near 80.

    Mostly Sunny

    High: 80 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 64.

    Partly Cloudy

    Low: 64 °F

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 70. Calm wind.
Friday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rain. Patchy fog before 8am. High near 81. East wind 3 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Rain. The rain could be heavy at times. Low around 66. Northeast wind 7 to 13 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.
Saturday
Rain. The rain could be heavy at times. High near 69. Northeast wind 15 to 17 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 59. Northeast wind 10 to 14 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A chance of showers. Mostly sunny, with a high near 77. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Mostly clear, with a low around 60.
Monday
Mostly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 66.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Mostly sunny, with a high near 86.
Click Map For Forecast
Point Forecast:
Downingtown PA
 40.02°N 75.7°W (Elev. 338 ft)
12:35 am EDT Jul 28, 2017
3am EDT Jul 28, 2017-6pm EDT Aug 3, 2017
 
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