Johnstown Cambria County Airport (JST) Weather 08/29/2025
Today
78
Sunny
Tonight
61
Mostly Clear
Saturday
80
Mostly Sunny then Chance Showers
Saturday Night
63
Showers Likely
Sunday
77
Showers
Sunday Night
57
Showers then Chance Showers
Monday
70
Mostly Sunny
Monday Night
51
Mostly Clear
Tuesday
65
Mostly Sunny
Tuesday Night
47
Mostly Clear
Wednesday
66
Mostly Sunny
Wednesday Night
48
Mostly Clear
Thursday
71
Sunny
Weekly Forecast
Today
Sunny, with a high near 78. Light southeast wind.
Tonight
Mostly clear, with a low around 61. South wind 5 to 7 mph.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 80. South wind 6 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 63. South wind 7 to 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely, then showers and possibly a thunderstorm after 11am. High near 77. Southwest wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 57. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Mostly sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 71.