I-99 weather conditions near Altoona, Pennsylvania
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Current Weather Conditions
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7 day weather forecast
Current condition: Thunderstorm in Vicinity 83°F 2025-07-11T14:53:00-04:00
This Afternoon 2025-07-11, Chance T-storms. A chance of showers and thunderstorms. Partly sunny, with a high near 88. Light southwest wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight 2025-07-11, Chance Showers then Patchy Fog. A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday 2025-07-12, Sunny then Chance T-storms. A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 91. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night 2025-07-12, Chance T-storms then Chance Showers. A chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 69. Light south wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday 2025-07-13, Chance T-storms then T-storms. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 88. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night 2025-07-13, T-storms then Chance Showers. Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 66. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday 2025-07-14, Partly Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Monday Night 2025-07-14, Chance T-storms then Mostly Clear. A chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 64. Chance of precipitation is 30%.
Tuesday 2025-07-15, Sunny. Sunny, with a high near 90.
Tuesday Night 2025-07-15, Partly Cloudy. Partly cloudy, with a low around 67.
Wednesday 2025-07-16, Mostly Sunny then Chance T-storms. A chance of showers and thunderstorms. Partly sunny, with a high near 91. Chance of precipitation is 40%.
Wednesday Night 2025-07-16, Chance T-storms then Chance Showers. A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Thursday 2025-07-17, Chance Showers then Showers Likely. Showers likely and possibly a thunderstorm. Partly sunny, with a high near 90. Chance of precipitation is 70%.
Thursday Night 2025-07-17, Showers Likely. Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Friday 2025-07-18, Chance Showers then Chance T-storms. A chance of showers and thunderstorms. Partly sunny, with a high near 87.
Current condition: Thunderstorm in Vicinity 83°F 2025-07-11T14:53:00-04:00 
This Afternoon 2025-07-11, Chance T-storms. A chance of showers and thunderstorms. Partly sunny, with a high near 88. Light southwest wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.Tonight 2025-07-11, Chance Showers then Patchy Fog. A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday 2025-07-12, Sunny then Chance T-storms. A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 91. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night 2025-07-12, Chance T-storms then Chance Showers. A chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 69. Light south wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday 2025-07-13, Chance T-storms then T-storms. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 88. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night 2025-07-13, T-storms then Chance Showers. Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 66. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday 2025-07-14, Partly Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Monday Night 2025-07-14, Chance T-storms then Mostly Clear. A chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 64. Chance of precipitation is 30%.
Tuesday 2025-07-15, Sunny. Sunny, with a high near 90.
Tuesday Night 2025-07-15, Partly Cloudy. Partly cloudy, with a low around 67.Wednesday 2025-07-16, Mostly Sunny then Chance T-storms. A chance of showers and thunderstorms. Partly sunny, with a high near 91. Chance of precipitation is 40%.
Wednesday Night 2025-07-16, Chance T-storms then Chance Showers. A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Thursday 2025-07-17, Chance Showers then Showers Likely. Showers likely and possibly a thunderstorm. Partly sunny, with a high near 90. Chance of precipitation is 70%.
Thursday Night 2025-07-17, Showers Likely. Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.Friday 2025-07-18, Chance Showers then Chance T-storms. A chance of showers and thunderstorms. Partly sunny, with a high near 87.