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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Partly Cloudy

81°F

27°C

Humidity 46%
Wind Speed SW 9 mph
Barometer 29.76 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 17 Jun 4:55 pm EDT
Extended Forecast for

Conshohocken PA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 7pm and 8pm. Increasing clouds, with a low around 69. South wind around 10 mph. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers before noon, then a chance of showers and thunderstorms after 2pm. Cloudy through mid morning, then gradual clearing, with a high near 92. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Breezy.
    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 67. West wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Cloudy through mid morning, then gradual clearing, with a high near 84. West wind 10 to 15 mph.

    High: 84 °F

    Gradual
    Clearing

  • Friday Night

    Friday Night: Clear, with a low around 63. West wind 5 to 10 mph.

    Low: 63 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Saturday Night

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

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms between 7pm and 8pm. Increasing clouds, with a low around 69. South wind around 10 mph. Chance of precipitation is 20%.
Thursday
A chance of showers before noon, then a chance of showers and thunderstorms after 2pm. Cloudy through mid morning, then gradual clearing, with a high near 92. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Partly cloudy, with a low around 67. West wind 10 to 15 mph, with gusts as high as 25 mph.
Juneteenth
Cloudy through mid morning, then gradual clearing, with a high near 84. West wind 10 to 15 mph.
Friday Night
Clear, with a low around 63. West wind 5 to 10 mph.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 85.
Sunday Night
A chance of showers after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Monday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 82. Chance of precipitation is 80%.
Monday Night
Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 80%.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Conshohocken PA
 40.09°N 75.31°W (Elev. 118 ft)
Last Update:
4:08 pm EDT Jun 17, 2026
Forecast Valid:
5pm EDT Jun 17, 2026-6pm EDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation