Johnstown Cambria County Airport (JST) Weather 06/09/2025
Overnight
59
Slight Chance T-storms and Patchy Dense Fog
Monday
74
Patchy Dense Fog then Chance T-storms
Monday Night
59
T-storms
Tuesday
70
Chance Showers then Mostly Sunny
Tuesday Night
56
Mostly Clear
Wednesday
75
Sunny
Wednesday Night
60
Mostly Clear
Thursday
80
Sunny
Thursday Night
61
Partly Cloudy
Friday
79
Mostly Sunny then Chance Showers
Friday Night
63
Chance Showers
Saturday
74
Chance Showers then Showers Likely
Saturday Night
62
Showers Likely
Weekly Forecast
Overnight
A slight chance of showers and thunderstorms before 2am. Patchy dense fog after 2am. Otherwise, mostly cloudy, with a low around 59. South wind around 6 mph. Chance of precipitation is 20%.
Monday
A chance of showers and thunderstorms, mainly after 4pm. Patchy dense fog before 8am. Otherwise, partly sunny, with a high near 74. Southwest wind 5 to 8 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Low around 59. South wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 11am. Mostly sunny, with a high near 70. West wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Mostly clear, with a low around 56. West wind 7 to 9 mph.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 61.
Friday
A chance of showers after 2pm. Mostly sunny, with a high near 79. Chance of precipitation is 40%.
Friday Night
A chance of showers. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Saturday
Showers likely. Partly sunny, with a high near 74. Chance of precipitation is 60%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.