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.

Overcast

27°F

-3°C

Humidity 66%
Wind Speed W 13 G 23 mph
Barometer 30.18 in (1024.2 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 12 Jan 3:53 am EST
Extended Forecast for

Defiance PA

  • Today

    Today: Mostly sunny, with a high near 39. West wind 9 to 13 mph, with gusts as high as 25 mph.

    High: 39 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 28. Southwest wind around 6 mph.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 45. Southwest wind 3 to 7 mph.

    High: 45 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37. Southwest wind around 7 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly after 1pm. Cloudy, with a high near 46. Southwest wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Rain likely before 4am, then a chance of snow. Mostly cloudy, with a low around 28. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 32. Chance of precipitation is 50%.

    High: 32 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 30%.

    Low: 16 °F

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 39. West wind 9 to 13 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 28. Southwest wind around 6 mph.
Tuesday
Partly sunny, with a high near 45. Southwest wind 3 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 37. Southwest wind around 7 mph.
Wednesday
Rain likely, mainly after 1pm. Cloudy, with a high near 46. Southwest wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain likely before 4am, then a chance of snow. Mostly cloudy, with a low around 28. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday
A chance of snow. Mostly cloudy, with a high near 32. Chance of precipitation is 50%.
Thursday Night
A chance of snow before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 28.
Friday Night
Partly cloudy, with a low around 19.
Saturday
A chance of snow showers. Partly sunny, with a high near 35. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 17.
Sunday
Partly sunny, with a high near 26.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Defiance PA
 40.14°N 78.23°W (Elev. 1401 ft)
Last Update:
3:12 am EST Jan 12, 2026
Forecast Valid:
4am EST Jan 12, 2026-6pm EST Jan 18, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation