Johnstown Cambria County Airport (JST) Weather 07/13/2026
Tonight
61
Isolated T-storms then Patchy Fog
Sunday
78
Patchy Fog then Mostly Sunny
Sunday Night
62
Mostly Clear
Monday
77
Sunny then Slight Chance T-storms
Monday Night
62
Mostly Clear
Tuesday
83
Sunny
Tuesday Night
67
Mostly Clear
Wednesday
86
Sunny
Wednesday Night
66
Mostly Clear
Thursday
83
Sunny
Thursday Night
65
Partly Cloudy
Friday
81
Mostly Sunny then Chance T-storms
Friday Night
64
Chance T-storms then Chance Showers
Weekly Forecast
Tonight
Isolated showers and thunderstorms between 10pm and midnight. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 61. East wind 3 to 6 mph. Chance of precipitation is 20%.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 78. East wind 6 to 8 mph.
Sunday Night
Mostly clear, with a low around 62. Southeast wind around 8 mph.
Monday
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 77. Southeast wind around 8 mph. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 62. South wind around 6 mph.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 65.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.