Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Overcast

73°F

23°C

Humidity 54%
Wind Speed SW 13 G 21 mph
Barometer 30.04 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 13 Apr 1:10 pm EDT
Extended Forecast for

Norristown PA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 80. Southwest wind around 15 mph, with gusts as high as 30 mph.

    High: 80 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly clear, with a low around 59. Southwest wind 5 to 10 mph becoming light west  after midnight.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85. Light west wind becoming southwest 5 to 10 mph in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 65. Southwest wind around 5 mph becoming calm  in the evening.

    Low: 65 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after 2pm.  Mostly sunny, with a high near 89. Southwest wind 5 to 10 mph.  Chance of precipitation is 20%.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers, mainly between 8pm and 2am.  Mostly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 65.

    Low: 65 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 80. Southwest wind around 15 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 59. Southwest wind 5 to 10 mph becoming light west after midnight.
Tuesday
Mostly sunny, with a high near 85. Light west wind becoming southwest 5 to 10 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 65. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
A slight chance of showers after 2pm. Mostly sunny, with a high near 89. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 89.
Thursday Night
Mostly cloudy, with a low around 65.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
Sunday
A chance of showers. Partly sunny, with a high near 75. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Norristown PA
 40.13°N 75.33°W (Elev. 200 ft)
4:11 am EDT Apr 13, 2026
1pm EDT Apr 13, 2026-6pm EDT Apr 19, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database