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

Severe Thunderstorms and Critical Fire Weather Wednesday

Scattered severe thunderstorms are possible across portions of the northern High Plains Wednesday afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Altoona - Blair County Airport (KAOO)

Lat: 40.3°NLon: 78.32°WElev: 1467ft.

Fair

52°F

11°C

Humidity 69%
Wind Speed SW 8 mph
Barometer 29.90 in (1012.2 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 13 May 5:53 am EDT
Extended Forecast for

Defiance PA

  • Today

    Today: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 67. Southwest wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 67 °F

    Chance
    Showers then
    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 9pm, then a slight chance of showers between 9pm and 10pm. Low around 45. West wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 45 °F

    Showers then
    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers after 11am. Partly sunny, with a high near 58. Northwest wind 8 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 58 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 46. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.

    Low: 46 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 40%.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 8pm. Partly cloudy, with a low around 58. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 67. Southwest wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 9pm, then a slight chance of showers between 9pm and 10pm. Low around 45. West wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers after 11am. Partly sunny, with a high near 58. Northwest wind 8 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 46. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.
Friday
Mostly sunny, with a high near 70. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.
Friday Night
Partly cloudy, with a low around 49.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 40%.
Saturday Night
A chance of showers before 8pm. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Mostly sunny and hot, with a high near 92.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Mostly sunny and hot, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Defiance PA
 40.17°N 78.23°W (Elev. 1135 ft)
Last Update:
5:56 am EDT May 13, 2026
Forecast Valid:
6am EDT May 13, 2026-6pm EDT May 19, 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