NWS Forecast for Altoona PA

National Weather Service Forecast for: Altoona PA
Issued by: National Weather Service State College, PA

Updated: 2:46 am EDT Jun 30, 2026

Overnight Mostly Clear	Tuesday Mostly Sunny	Tuesday Night Partly Cloudy	Wednesday Hot	Wednesday Night Clear	Thursday Hot	Thursday Night Mostly Clear	Friday Hot	Friday Night Partly Cloudy
Lo 66 °F	Hi 91 °F	Lo 71 °F	Hi 95 °F	Lo 72 °F	Hi 97 °F	Lo 73 °F	Hi 97 °F	Lo 71 °F

Hazardous Weather Outlook
Heat Advisory

Overnight	Mostly clear, with a low around 66. Calm wind.
Tuesday	Mostly sunny, with a high near 91. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night	Partly cloudy, with a low around 71. Light south wind.
Wednesday	Sunny and hot, with a high near 95. Heat index values as high as 104. West wind 5 to 7 mph.
Wednesday Night	Clear, with a low around 72. Light west wind.
Thursday	Sunny and hot, with a high near 97.
Thursday Night	Mostly clear, with a low around 73.
Friday	Sunny and hot, with a high near 97.
Friday Night	Partly cloudy, with a low around 71.
Independence Day	A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Chance of precipitation is 40%.
Saturday Night	A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Sunday	A chance of showers and thunderstorms. Partly sunny, with a high near 91. Chance of precipitation is 30%.
Sunday Night	A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Monday	A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 40%.

Forecast from NOAA-NWS for Altoona PA.