Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Continuous Heavy Rainfall And Threat For Flooding Over The Western Gulf Coast And Midwest; Excessive Heat Widespread Across The Desert Southwest

A very slow moving disturbance will deliver continuous tropical heavy rainfall and flooding along the Texas Gulf Coast into Louisiana. Additional heavy rainfall will be possible across the Midwest and Ohio Valley, from a circulation and stalled frontal zone. Very hot temperatures exceeding 110 degrees are likely over southern California, Nevada and Arizona, which includes Las Vegas and Phoenix. Read More >

Hazardous Weather Conditions

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Fair

77°F

25°C

Humidity 57%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 20 Jun 10:55 am EDT
Extended Forecast for

Norristown PA

  • Today

    Today: Mostly cloudy, with a high near 85. Calm wind becoming west around 6 mph in the afternoon.

    Mostly Cloudy

    High: 85 °F

  • Tonight

    Tonight: A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and 11pm, then showers likely and possibly a thunderstorm after 11pm. Some of the storms could produce heavy rain.  Cloudy, with a low around 66. Calm wind becoming north around 6 mph after midnight.  Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

    Heavy Rain

    Low: 66 °F

  • Thursday

    Thursday: A chance of showers before 10am.  Cloudy, then gradually becoming mostly sunny, with a high near 84. Northeast wind around 8 mph.  Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    Chance
    Showers then
    Mostly Sunny

    High: 84 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 64. East wind around 7 mph.

    Partly Cloudy

    Low: 64 °F

  • Friday

    Friday: Mostly cloudy, with a high near 78. East wind around 10 mph.

    Mostly Cloudy

    High: 78 °F

  • Friday
    Night

    Friday Night: A chance of showers between 9pm and 3am, then a chance of showers and thunderstorms after 3am.  Cloudy, with a low around 64. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Chance
    Showers then
    Chance
    T-storms

    Low: 64 °F

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly after 9am.  Cloudy, with a high near 84. Chance of precipitation is 60%.

    T-storms
    Likely

    High: 84 °F

  • Saturday
    Night

    Saturday Night: Showers and thunderstorms likely before midnight, then a chance of showers between midnight and 3am.  Partly cloudy, with a low around 68. Chance of precipitation is 60%.

    T-storms
    Likely then
    Chance
    Showers

    Low: 68 °F

  • Sunday

    Sunday: A chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 86. Chance of precipitation is 40%.

    Mostly Sunny
    then Chance
    T-storms

    High: 86 °F

Detailed Forecast

Today
Mostly cloudy, with a high near 85. Calm wind becoming west around 6 mph in the afternoon.
Tonight
A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and 11pm, then showers likely and possibly a thunderstorm after 11pm. Some of the storms could produce heavy rain. Cloudy, with a low around 66. Calm wind becoming north around 6 mph after midnight. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
Thursday
A chance of showers before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 84. Northeast wind around 8 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Partly cloudy, with a low around 64. East wind around 7 mph.
Friday
Mostly cloudy, with a high near 78. East wind around 10 mph.
Friday Night
A chance of showers between 9pm and 3am, then a chance of showers and thunderstorms after 3am. Cloudy, with a low around 64. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and thunderstorms likely, mainly after 9am. Cloudy, with a high near 84. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely before midnight, then a chance of showers between midnight and 3am. Partly cloudy, with a low around 68. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 86. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 66. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Sunny, with a high near 83.
Click Map For Forecast
Point Forecast:
Norristown PA
 40.11°N 75.33°W (Elev. 177 ft)
9:36 am EDT Jun 20, 2018
11am EDT Jun 20, 2018-6pm EDT Jun 26, 2018
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database