I-99 weather conditions near Altoona, Pennsylvania
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Fog/Mist 71°F 2025-07-12T08:53:00-04:00
Today 2025-07-12, Patchy Dense Fog then Isolated T-storms. Isolated showers and thunderstorms after noon. Patchy dense fog before 10am. Otherwise, mostly sunny and hot, with a high near 92. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.
Tonight 2025-07-12, Scattered T-storms. Scattered showers and thunderstorms before 5am, then a slight chance of showers. Partly cloudy, with a low around 69. Light south wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday 2025-07-13, Chance Showers then T-storms. A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 88. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night 2025-07-13, T-storms then Showers Likely. Showers and possibly a thunderstorm, mainly before 2am. Low around 68. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday 2025-07-14, Chance T-storms. A chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 87. Calm wind becoming northwest 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.
Monday Night 2025-07-14, Chance Showers 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 91.
Tuesday Night 2025-07-15, Mostly Clear. Mostly clear, with a low around 67.
Wednesday 2025-07-16, Mostly Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
Wednesday Night 2025-07-16, Chance T-storms then Chance Showers. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 70. 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 60%.
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, Showers Likely. Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Chance of precipitation is 60%.