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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Current conditions at

Indiana County Airport - Jimmy Stewart Field (KIDI)

Lat: 40.63°NLon: 79.1°WElev: 1419ft.

Fog/Mist

72°F

22°C

Humidity 100%
Wind Speed Calm
Barometer 30.32 in
Dewpoint 72°F (22°C)
Visibility 6.00 mi
Last update 16 Sep 9:35 pm EDT
Extended Forecast for

Chevy Chase Heights PA

  • Tonight

    Tonight: A chance of showers before 4am, then a slight chance of showers and thunderstorms between 4am and 5am, then a slight chance of showers after 5am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Partly Cloudy
    then Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: Showers and thunderstorms before 4pm, then showers and possibly a thunderstorm, mainly after 4pm. Patchy fog before 7am. High near 82. West wind 3 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 2am. Mostly cloudy, with a low around 64. Light northwest wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 78. North wind 3 to 7 mph.

    High: 78 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55. North wind around 6 mph becoming east after midnight.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Chance
    Showers then
    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm before 8am, then showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. High near 77. Chance of precipitation is 90%.

    High: 77 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

    Low: 59 °F

    Showers
    Likely

Detailed Forecast

Tonight
A chance of showers before 4am, then a slight chance of showers and thunderstorms between 4am and 5am, then a slight chance of showers after 5am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and thunderstorms before 4pm, then showers and possibly a thunderstorm, mainly after 4pm. Patchy fog before 7am. High near 82. West wind 3 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 2am. Mostly cloudy, with a low around 64. Light northwest wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 78. North wind 3 to 7 mph.
Friday Night
Partly cloudy, with a low around 55. North wind around 6 mph becoming east after midnight.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 62. Chance of precipitation is 80%.
Sunday
Showers and possibly a thunderstorm before 8am, then showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. High near 77. Chance of precipitation is 90%.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Monday
A chance of showers after 2pm. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 50%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 73. Chance of precipitation is 50%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Chevy Chase Heights PA
 40.65°N 79.14°W (Elev. 1325 ft)
Last Update:
7:21 pm EDT Sep 16, 2026
Forecast Valid:
9pm EDT Sep 16, 2026-6pm EDT Sep 23, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation