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

Severe Thunderstorms for the Center of the Nation; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

A round of severe thunderstorms are forecast across areas of the Southern Plains, Mississippi Valley and Great Lakes this afternoon and tonight; The threat for flash flooding will also accompany these storms. The rainfall for the Great Lakes region could prolong the ongoing flooding. Where the rain is needed, the Southern High Plains, critical fire weather concerns through today. 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 86%
Wind Speed Calm
Barometer 29.97 in (1014.5 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 18 Apr 5:53 am EDT
Extended Forecast for

Altoona PA

  • Today

    Today: A chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 82. Light southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Low around 41. Southwest wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Showers

  • Sunday

    Sunday: A chance of showers before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 52. West wind around 14 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of rain showers between 8pm and 5am, then a chance of snow showers after 5am. Mostly cloudy, with a low around 32. West wind around 7 mph. Chance of precipitation is 40%.

    Low: 32 °F

    Chance
    Showers then
    Chance
    Rain/Snow

  • Monday

    Monday: A chance of snow showers, possibly mixing with rain after 11am, then gradually ending. Mostly sunny, with a high near 45. Northwest wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

    High: 45 °F

    Chance
    Rain/Snow

  • Monday Night

    Monday Night: Widespread frost after 3am. Otherwise, mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear
    then Frost

  • Tuesday

    Tuesday: Widespread frost before 7am. Otherwise, sunny, with a high near 62.

    High: 62 °F

    Frost then
    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.

    Low: 45 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 2pm. Mostly sunny, with a high near 67. Chance of precipitation is 30%.

    High: 67 °F

    Chance
    Showers

Detailed Forecast

Today
A chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 82. Light southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm. Low around 41. Southwest wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 52. West wind around 14 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
A chance of rain showers between 8pm and 5am, then a chance of snow showers after 5am. Mostly cloudy, with a low around 32. West wind around 7 mph. Chance of precipitation is 40%.
Monday
A chance of snow showers, possibly mixing with rain after 11am, then gradually ending. Mostly sunny, with a high near 45. Northwest wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Monday Night
Widespread frost after 3am. Otherwise, mostly clear, with a low around 25.
Tuesday
Widespread frost before 7am. Otherwise, sunny, with a high near 62.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.
Wednesday
A chance of showers before 2pm. Mostly sunny, with a high near 67. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 75.
Thursday Night
Mostly clear, with a low around 49.
Friday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Altoona PA
 40.51°N 78.4°W (Elev. 1198 ft)
Last Update:
6:16 am EDT Apr 18, 2026
Forecast Valid:
6am EDT Apr 18, 2026-6pm EDT Apr 24, 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