Johnston, Pennsylvania Weather
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Weather Forecast for Johnston, Pennsylvania : Franklin County
Issued: 10:54 am EDT Apr 29, 2025 Latitude: 39.758427 Longitude: -77.7549943 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Mostly Sunny on Today 40% chance of thunderstorms on Tonight Mostly Sunny on Wednesday 40% chance of thunderstorms on Thursday 60% chance of on Friday 60% chance of on Saturday Sunny on Sunday Sunny on Monday
High: 85°F Low: 62°F High: 76°F High: 78°F High: 82°F High: 69°F High: 67°F High: 71°F
Low: 54°F Low: 64°F Low: 56°F Low: 45°F Low: 46°F  
Mostly Sunny Thunderstorms Mostly Sunny Thunderstorms Partly Sunny Partly Sunny Sunny Sunny
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Current Conditions at
COLLEGE PARK ARPT - (KCGS)
68°
Clear
as of 10:35 AM EDST
Rel. Humidity: 49%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 30.20 in.
Flight Rule: VFR
Wind Data
9 MPH
190° South
Cloud Level(s): Clear
Mostly Sunny on Today Today... Mostly sunny, with a high near 85. South wind 9 to 13 mph, with gusts as high as 22 mph.
40% chance of thunderstorms Tonight Tonight... A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 62. Southwest wind 6 to 9 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 76. Northwest wind around 7 mph.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 54. Calm wind.
40% chance of thunderstorms Thursday Thursday... A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 78. Calm wind becoming south 5 to 9 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
50% chance of thunderstorms Thursday Night Thursday Night... A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
60% chance of Friday Friday... Showers likely, mainly after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 60%.
60% chance of rain Friday Night Friday Night... Showers likely, mainly before 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
60% chance of Saturday Saturday... Showers likely, mainly between 8am and 2pm. Partly sunny, with a high near 69. Chance of precipitation is 60%.
30% chance of rain Saturday Night Saturday Night... A chance of showers before 8pm. Partly cloudy, with a low around 45. Chance of precipitation is 30%.
Sunny on Sunday Sunday... Sunny, with a high near 67.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 46.
Sunny on Monday Monday... Sunny, with a high near 71.
Current Radar Image


Sun Almanac for Johnston, Pennsylvania
Sunrise: 06:13 AM
Sunset: 8:03 PM
Civil Sunrise:05:44 AM
Civil Sunset: 8:32 PM
Nautical Sunrise: 05:09 AM
Nautical Sunset: 9:08 PM
Astro Sunrise: 04:31 AM
Astro Sunset: 9:46 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.