I-81 weather conditions near Chambersburg, Pennsylvania
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Current Weather Conditions
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7 day weather forecast
Current condition: A Few Clouds 89°F 2025-07-12T12:53:00-04:00
This Afternoon 2025-07-12, Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 100. South wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight 2025-07-12, Chance T-storms then Slight Chance Showers and Patchy Fog. A chance of showers and thunderstorms before 3am, then a slight chance of showers after 5am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 71. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday 2025-07-13, Slight Chance Showers and Patchy Fog then T-storms. Showers and thunderstorms, mainly after 5pm. Patchy fog before 8am. High near 89. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 80%. 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 Showers. Showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Low around 70. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday 2025-07-14, Chance Showers then Chance T-storms. A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Light and variable wind. 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 67. Chance of precipitation is 30%.
Tuesday 2025-07-15, Sunny. Sunny, with a high near 91.
Tuesday Night 2025-07-15, Partly Cloudy. Partly cloudy, with a low around 70.
Wednesday 2025-07-16, Mostly Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Chance of precipitation is 40%.
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 72. Chance of precipitation is 30%.
Thursday 2025-07-17, Partly Sunny then Showers Likely. Showers likely and possibly a thunderstorm. Partly sunny and hot, with a high near 92. Chance of precipitation is 60%.
Thursday Night 2025-07-17, Showers Likely. Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Friday 2025-07-18, Mostly Sunny then Showers Likely. Showers likely and possibly a thunderstorm. Partly sunny and hot, with a high near 92. Chance of precipitation is 60%.
Current condition: A Few Clouds 89°F 2025-07-12T12:53:00-04:00 
This Afternoon 2025-07-12, Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 100. South wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.Tonight 2025-07-12, Chance T-storms then Slight Chance Showers and Patchy Fog. A chance of showers and thunderstorms before 3am, then a slight chance of showers after 5am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 71. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday 2025-07-13, Slight Chance Showers and Patchy Fog then T-storms. Showers and thunderstorms, mainly after 5pm. Patchy fog before 8am. High near 89. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 80%. 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 Showers. Showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Low around 70. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday 2025-07-14, Chance Showers then Chance T-storms. A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Light and variable wind. 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 67. Chance of precipitation is 30%.
Tuesday Night 2025-07-15, Partly Cloudy. Partly cloudy, with a low around 70.Wednesday 2025-07-16, Mostly Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 92. Chance of precipitation is 40%.
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 72. Chance of precipitation is 30%.
Thursday 2025-07-17, Partly Sunny then Showers Likely. Showers likely and possibly a thunderstorm. Partly sunny and hot, with a high near 92. Chance of precipitation is 60%.
Thursday Night 2025-07-17, Showers Likely. Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.Friday 2025-07-18, Mostly Sunny then Showers Likely. Showers likely and possibly a thunderstorm. Partly sunny and hot, with a high near 92. Chance of precipitation is 60%.