Johnstown Cambria County Airport (JST) Weather 07/19/2025
This Afternoon
81
Slight Chance Showers
Tonight
68
Partly Cloudy then Chance T-storms
Sunday
79
Chance T-storms then Showers Likely
Sunday Night
61
Slight Chance T-storms then Slight Chance Showers
Monday
77
Mostly Sunny
Monday Night
56
Mostly Clear
Tuesday
77
Sunny
Tuesday Night
59
Mostly Clear
Wednesday
81
Mostly Sunny
Wednesday Night
65
Mostly Clear
Thursday
86
Sunny
Thursday Night
69
Partly Cloudy
Friday
86
Mostly Sunny then Chance T-storms
Weekly Forecast
This Afternoon
A slight chance of showers. Mostly sunny, with a high near 81. West wind around 6 mph. Chance of precipitation is 20%.
Tonight
A chance of thunderstorms, mainly after 5am. Increasing clouds, with a low around 68. South wind 5 to 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 79. West wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 61. Northwest wind 6 to 10 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 77. North wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 69.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 50%.