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

Altoona - Blair County Airport (KAOO)

Lat: 40.3°NLon: 78.32°WElev: 1467ft.

Light Rain

47°F

8°C

Humidity 74%
Wind Speed NW 15 mph
Barometer 29.87 in (1011.9 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 14 May 3:53 pm EDT
Extended Forecast for

Defiance PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. Northwest wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 68. Northwest wind 8 to 11 mph, with gusts as high as 21 mph.

    High: 68 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47. Light and variable wind.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 81. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 59 °F

    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 20%.

    High: 86 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Chance of precipitation is 30%.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 44. Northwest wind 9 to 14 mph, with gusts as high as 23 mph.
Friday
Mostly sunny, with a high near 68. Northwest wind 8 to 11 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 47. Light and variable wind.
Saturday
Mostly sunny, with a high near 81. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Sunday
A slight chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 60.
Monday
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Tuesday
Sunny and hot, with a high near 93.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 87. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Defiance PA
 40.14°N 78.23°W (Elev. 1401 ft)
Last Update:
2:37 pm EDT May 14, 2026
Forecast Valid:
3pm EDT May 14, 2026-6pm EDT May 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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