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

Summer Heat In Multiple Spots

A large dome of high pressure is expected to deliver summer heat with humidity in multiple sections of the country to start off the week. Excessive heat warnings and heat advisories are in effect across the south-central Plains, Mid to Lower Mississippi Valley and from the Mid-Atlantic into the Northeast. This includes the cities of New York, Philadelphia, Dallas, Oklahoma City and Kansas City. Read More >

Hazardous Weather Conditions

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Fair

21°C

70°F

Humidity 99%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 21°C (70°F)
Visibility 16 km
Last update 18 Aug 11:55 pm EDT
Extended Forecast for

Glenside PA

Heat Advisory August 19, 10:00am until August 20, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: A chance of showers, mainly before 2am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 23. Calm wind. Chance of precipitation is 40%.

    Chance
    Showers and
    Patchy Fog

    Low: 23 °C

  • Monday

    Monday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 34. Calm wind becoming southwest 5 to 10 km/h in the morning.

    Patchy Fog
    then Sunny

    High: 34 °C

  • Monday
    Night

    Monday Night: A slight chance of showers and thunderstorms before 3am. Some of the storms could produce heavy rain. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 23. Southwest wind 5 to 8 km/h becoming calm after midnight. Chance of precipitation is 20%.

    Heavy Rain
    and Patchy
    Fog

    Low: 23 °C

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 9am. Some of the storms could produce heavy rain. Patchy fog before 9am. Otherwise, partly sunny, with a high near 34. Heat index values as high as 38. Calm wind becoming southwest 5 to 10 km/h in the morning. Chance of precipitation is 50%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    Heavy Rain
    and Patchy
    Fog

    High: 34 °C

  • Tuesday
    Night

    Tuesday Night: A chance of showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 23. South wind 5 to 8 km/h. Chance of precipitation is 50%. New rainfall amounts between 1 and 2 cm possible.

    Heavy Rain

    Low: 23 °C

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Partly sunny, with a high near 32. Chance of precipitation is 50%. New rainfall amounts between 5 and 7.5 mm possible.

    Chance
    T-storms

    High: 32 °C

  • Wednesday
    Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 23. Chance of precipitation is 50%.

    Chance
    T-storms

    Low: 23 °C

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 31. Chance of precipitation is 50%.

    Chance
    Showers then
    Chance
    T-storms

    High: 31 °C

  • Thursday
    Night

    Thursday Night: A chance of showers and thunderstorms before 3am. Partly cloudy, with a low around 19. Chance of precipitation is 50%.

    Chance
    T-storms

    Low: 19 °C

Detailed Forecast

Overnight
A chance of showers, mainly before 2am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 23. Calm wind. Chance of precipitation is 40%.
Monday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 34. Calm wind becoming southwest 5 to 10 km/h in the morning.
Monday Night
A slight chance of showers and thunderstorms before 3am. Some of the storms could produce heavy rain. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 23. Southwest wind 5 to 8 km/h becoming calm after midnight. Chance of precipitation is 20%.
Tuesday
A chance of showers and thunderstorms after 9am. Some of the storms could produce heavy rain. Patchy fog before 9am. Otherwise, partly sunny, with a high near 34. Heat index values as high as 38. Calm wind becoming southwest 5 to 10 km/h in the morning. Chance of precipitation is 50%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 23. South wind 5 to 8 km/h. Chance of precipitation is 50%. New rainfall amounts between 1 and 2 cm possible.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 32. Chance of precipitation is 50%. New rainfall amounts between 5 and 7.5 mm possible.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 23. Chance of precipitation is 50%.
Thursday
A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 31. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 3am. Partly cloudy, with a low around 19. Chance of precipitation is 50%.
Friday
Sunny, with a high near 27.
Friday Night
Mostly clear, with a low around 17.
Saturday
Sunny, with a high near 28.
Saturday Night
Mostly clear, with a low around 18.
Sunday
Mostly sunny, with a high near 29.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Glenside PA
 40.11°N 75.15°W (Elev. 91 m)
Last Update:
9:41 pm EDT Aug 18, 2019
Forecast Valid:
12am EDT Aug 19, 2019-6pm EDT Aug 24, 2019
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation