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: Overcast 60°F 2025-06-15T07:55:00-04:00 
Today 2025-06-15, Scattered Showers. Isolated showers before 11am, then scattered showers after 2pm. Cloudy, with a high near 66. East wind around 6 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Tonight 2025-06-15, Chance Showers and Patchy Fog. A chance of showers, mainly after 2am. Patchy fog between 10pm and 3am. Otherwise, mostly cloudy, with a low around 59. Light east wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday 2025-06-16, Chance Showers. A chance of showers, mainly before 2pm. Cloudy, with a high near 71. East wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night 2025-06-16, Slight Chance Showers. A slight chance of showers. Cloudy, with a low around 61. Light east wind. Chance of precipitation is 20%.- Tuesday 2025-06-17, Chance Showers. A slight chance of showers before 9am, then a chance of showers after 2pm. Mostly cloudy, with a high near 76. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night 2025-06-17, Chance T-storms. A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.Wednesday 2025-06-18, Mostly Cloudy then Chance Showers. A chance of showers after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 40%.
Wednesday Night 2025-06-18, Chance T-storms. A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 69. Chance of precipitation is 30%.Juneteenth 2025-06-19, Chance Showers then Showers Likely. Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 60%.
Thursday Night 2025-06-19, Showers Likely then Partly Cloudy. Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 60%.
Friday 2025-06-20, Sunny. Sunny, with a high near 83.
Friday Night 2025-06-20, Mostly Clear. Mostly clear, with a low around 62.- Saturday 2025-06-21, Sunny. Sunny, with a high near 87.