I-78 weather conditions near Jonestown, Pennsylvania
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Mostly Cloudy 61°F 2025-05-19T10:55:00-04:00 
Today 2025-05-19, Mostly Sunny. Mostly sunny, with a high near 71. Northwest wind 11 to 14 mph, with gusts as high as 23 mph.
Tonight 2025-05-19, Mostly Clear. Mostly clear, with a low around 43. Northwest wind 3 to 7 mph.- Tuesday 2025-05-20, Increasing Clouds. Increasing clouds, with a high near 70. North wind around 6 mph.
Tuesday Night 2025-05-20, Slight Chance Showers then Showers. Showers, mainly after 2am. Low around 51. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday 2025-05-21, Showers. Showers. High near 58. Southeast wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday Night 2025-05-21, Showers. Showers and possibly a thunderstorm. Low around 48. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday 2025-05-22, Showers. Showers. High near 58. Chance of precipitation is 90%.
Thursday Night 2025-05-22, Chance Showers. A chance of showers before 2am. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.Friday 2025-05-23, Chance Showers then Showers Likely. Showers likely, mainly after 2pm. Partly sunny, with a high near 63. Chance of precipitation is 60%.
Friday Night 2025-05-23, Showers Likely then Partly Cloudy. Showers likely before 8pm. Partly cloudy, with a low around 46. Chance of precipitation is 60%.
Saturday 2025-05-24, Mostly Sunny then Chance Showers. A chance of showers. Mostly sunny, with a high near 67. Chance of precipitation is 30%.
Saturday Night 2025-05-24, Chance Showers then Mostly Clear. A chance of showers. Partly cloudy, with a low around 47. Chance of precipitation is 30%.
Sunday 2025-05-25, Sunny then Chance Showers. A chance of showers. Mostly sunny, with a high near 70. Chance of precipitation is 30%.