Johnstown Cambria County Airport (JST) Weather 04/29/2025
Today
78
Mostly Sunny then Chance T-storms
Tonight
51
Severe Thunderstorms then Showers Likely
Wednesday
66
Mostly Sunny
Wednesday Night
50
Partly Cloudy then Slight Chance Showers
Thursday
74
Chance Showers then Showers Likely
Thursday Night
60
Showers Likely
Friday
71
Showers
Friday Night
50
Showers
Saturday
58
Showers Likely
Saturday Night
40
Chance Showers then Partly Cloudy
Sunday
60
Sunny
Sunday Night
43
Mostly Clear
Monday
65
Sunny
Weekly Forecast
Today
A chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 78. Southwest wind 7 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 1am, then a chance of showers. Some of the storms could be severe. Mostly cloudy, with a low around 51. West wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Mostly sunny, with a high near 66. Northwest wind around 8 mph.
Wednesday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 50. Calm wind. Chance of precipitation is 20%.
Thursday
Showers likely, mainly after 2pm. Partly sunny, with a high near 74. South wind 5 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm, mainly after 2pm. High near 71. Chance of precipitation is 80%.
Friday Night
Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 50. Chance of precipitation is 80%.
Saturday
Showers likely, mainly before 2pm. Partly sunny, with a high near 58. Chance of precipitation is 60%.
Saturday Night
A chance of showers before 8pm. Partly cloudy, with a low around 40. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 65.