Johnstown Cambria County Airport (JST) Weather 06/23/2026

Today

Sunny, with a high near 77. Light northwest wind increasing to 5 to 9 mph in the morning.

Tonight

Partly cloudy, with a low around 61. South wind 5 to 7 mph.

Sunday

A chance of showers and thunderstorms before 2pm, then showers and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. High near 76. Southwest wind 8 to 13 mph, with gusts as high as 23 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 likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 53. Northwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday

Partly sunny, with a high near 65. West wind 10 to 13 mph, with gusts as high as 22 mph.

Monday Night

Partly cloudy, with a low around 50.

Tuesday

Mostly sunny, with a high near 70.

Tuesday Night

Partly cloudy, with a low around 55.

Wednesday

Mostly sunny, with a high near 73.

Wednesday Night

A chance of showers after 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 50%.

Thursday

Showers and possibly a thunderstorm. High near 76. Chance of precipitation is 80%.

Thursday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

Juneteenth

A chance of showers. Partly sunny, with a high near 71. Chance of precipitation is 30%.