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

Hurricane and Storm Surge Watches Issued for the Northern Gulf Coast for Strengthening Tropical Storm Isaias

Tropical Storm Isaias is forecast to track toward the central Gulf Coast while strengthening into a hurricane on Thursday. There is an increasing risk of damaging hurricane-force winds and life-threatening storm surge impacts along portions of the northern Gulf Coast Friday into Saturday. Isaias will bring heavy rainfall to the central Gulf Coast and much of the Southeast Friday into the weekend. Read More >

Current conditions at

Altoona - Blair County Airport (KAOO)

Lat: 40.3°NLon: 78.32°WElev: 1467ft.

A Few Clouds

72°F

22°C

Humidity 33%
Wind Speed SW 8 G 17 mph
Barometer 29.86 in (1010.9 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 7 Oct 4:53 pm EDT
Extended Forecast for

Shirleysburg PA

  • Tonight

    Tonight: Mostly clear, with a low around 57. Light south wind.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 74. Calm wind becoming northwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 71. Light northwest wind.

    High: 71 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers, mainly after 2am. Low around 56. Chance of precipitation is 100%.

    Low: 56 °F

    Chance
    Showers then
    Showers

  • Sunday

    Sunday: Showers. High near 66. Chance of precipitation is 100%.

    High: 66 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely before 2am. Cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 57. Light south wind.
Thursday
Sunny, with a high near 74. Calm wind becoming northwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 48. Calm wind.
Friday
Sunny, with a high near 71. Light northwest wind.
Friday Night
Mostly clear, with a low around 49. Calm wind.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Showers, mainly after 2am. Low around 56. Chance of precipitation is 100%.
Sunday
Showers. High near 66. Chance of precipitation is 100%.
Sunday Night
Showers likely before 2am. Cloudy, with a low around 60. Chance of precipitation is 60%.
Columbus Day
Mostly cloudy, with a high near 73.
Monday Night
Mostly cloudy, with a low around 58.
Tuesday
Partly sunny, with a high near 69.
Tuesday Night
Mostly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Shirleysburg PA
 40.31°N 77.88°W (Elev. 600 ft)
Last Update:
2:21 pm EDT Oct 7, 2026
Forecast Valid:
5pm EDT Oct 7, 2026-6pm EDT Oct 14, 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