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.

Fair

52°F

11°C

Humidity 43%
Wind Speed SW 7 mph
Barometer 30.01 in (1016.0 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 10 Mar 4:53 am EDT
Extended Forecast for

Defiance PA

  • Today

    Today: A chance of showers, mainly between 3pm and 5pm. Mostly sunny, with a high near 75. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 30%.

    High: 75 °F

    Sunny then
    Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms before 11am, then showers between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. Some of the storms could be severe. High near 75. South wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers then
    Severe
    Thunderstorms

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 38. South wind 10 to 14 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 38 °F

    Severe
    Thunderstorms
    then Showers

  • Thursday

    Thursday: A slight chance of rain and snow showers before 11am, then a slight chance of snow showers between 11am and 2pm. Mostly cloudy, with a high near 42. Northwest wind 14 to 16 mph, with gusts as high as 39 mph. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Mostly cloudy, with a high near 53.

    High: 53 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of showers, mainly between 3pm and 5pm. Mostly sunny, with a high near 75. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 30%.
Tonight
Partly cloudy, with a low around 57. Calm wind.
Wednesday
Showers and thunderstorms before 11am, then showers between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. Some of the storms could be severe. High near 75. South wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 38. South wind 10 to 14 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of rain and snow showers before 11am, then a slight chance of snow showers between 11am and 2pm. Mostly cloudy, with a high near 42. Northwest wind 14 to 16 mph, with gusts as high as 39 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 29.
Friday
Mostly cloudy, with a high near 53.
Friday Night
Mostly cloudy, with a low around 33.
Saturday
Mostly sunny, with a high near 49.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
Mostly cloudy, with a high near 62.
Sunday Night
Showers. Low around 37. Chance of precipitation is 80%.
Monday
Rain and snow showers. High near 45. Chance of precipitation is 80%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Defiance PA
 40.14°N 78.23°W (Elev. 1401 ft)
Last Update:
2:50 am EDT Mar 10, 2026
Forecast Valid:
5am EDT Mar 10, 2026-6pm EDT Mar 16, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation