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 >

Current conditions at

Altoona - Blair County Airport (KAOO)

Lat: 40.3°NLon: 78.32°WElev: 1467ft.

Fair

53°F

12°C

Humidity 83%
Wind Speed Calm
Barometer 30.00 in (1015.5 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 18 Apr 2:53 am EDT
Extended Forecast for

Mount Union PA

  • Overnight

    Overnight: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 80. Light southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 24 mph.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, then showers after 11pm.  Low around 43. South wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 21 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Showers

  • Sunday

    Sunday: Showers likely, mainly before 8am.  Cloudy through mid morning, then gradual clearing, with a high near 53. Northwest wind 10 to 13 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers, mainly between 8pm and 2am.  Partly cloudy, with a low around 35. West wind around 7 mph, with gusts as high as 20 mph.  Chance of precipitation is 30%.

    Low: 35 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of rain and snow showers, mainly between 11am and 2pm.  Mostly sunny, with a high near 47. Chance of precipitation is 20%.

    High: 47 °F

    Slight Chance
    Rain/Snow

  • Monday Night

    Monday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers before 2am.  Partly cloudy, with a low around 44. Chance of precipitation is 30%.

    Low: 44 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 56. Calm wind.
Saturday
Mostly sunny, with a high near 80. Light southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 24 mph.
Saturday Night
Showers and thunderstorms likely, then showers after 11pm. Low around 43. South wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Showers likely, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 53. Northwest wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
A chance of showers, mainly between 8pm and 2am. Partly cloudy, with a low around 35. West wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday
A slight chance of rain and snow showers, mainly between 11am and 2pm. Mostly sunny, with a high near 47. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Sunny, with a high near 60.
Tuesday Night
A chance of showers before 2am. Partly cloudy, with a low around 44. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 68.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 48.
Friday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Union PA
 40.4°N 77.9°W (Elev. 666 ft)
2:21 am EDT Apr 18, 2026
3am EDT Apr 18, 2026-6pm EDT Apr 24, 2026
 
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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