Cambria County Airport (JST) 15 Day Weather Forecast, Johnstown United States
Current weather conditions and 15 day weather forecast for Cambria County Airport in Johnstown, United States including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at JST
| 03 August 2026 Mon 23.7 ° C ( 74.7°F )  Sunny |
Feels Like : 23.6 ° C / 74.5°F Humidity : % 62 Pressure : 1013 mb Wind Speed : 11.2 kmph / 6.9 miles from NW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 8 |
15-day weather forecast for Cambria County Airport, Johnstown, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 03 August 2026 Mon | Sunny |
17.5 ° C | 24.3 ° C | 20 ° C | % 81 | 15.8 km/h | 57% |
| 04 August 2026 Tue | Sunny |
13.9 ° C | 27.6 ° C | 20.6 ° C | % 67 | 13 km/h | 5% |
| 05 August 2026 Wed | Sunny |
16.9 ° C | 27.6 ° C | 21.8 ° C | % 78 | 11.9 km/h | 68% |
| 06 August 2026 Thu |  Fog |
19.2 ° C | 25.6 ° C | 22.2 ° C | % 92 | 10.4 km/h | 90% |
| 07 August 2026 Fri |  Patchy rain nearby |
19.9 ° C | 29.4 ° C | 23 ° C | % 83 | 16.9 km/h | 77% |
| 08 August 2026 Sat | Patchy rain nearby |
18.8 ° C | 27.9 ° C | 22 ° C | % 86 | 13 km/h | 83% |
| 09 August 2026 Sun | Patchy rain nearby |
18.6 ° C | 28.9 ° C | 23.6 ° C | % 79 | 18 km/h | 47% |
| 10 August 2026 Mon | Sunny |
18.5 ° C | 27.1 ° C | 23.3 ° C | % 77 | 20.9 km/h | 66% |
| 11 August 2026 Tue | Fog |
17.7 ° C | 20.9 ° C | 19.3 ° C | % 97 | 17.3 km/h | 91% |
| 12 August 2026 Wed | Sunny |
14 ° C | 23.2 ° C | 18.6 ° C | % 74 | 14.8 km/h | 38% |
| 13 August 2026 Thu | Sunny |
11.5 ° C | 23.2 ° C | 17.2 ° C | % 65 | 8.3 km/h | 5% |
| 14 August 2026 Fri | Patchy rain nearby |
13.1 ° C | 22 ° C | 16.8 ° C | % 74 | 13 km/h | 68% |
| 15 August 2026 Sat |  Partly Cloudy |
12.2 ° C | 21.4 ° C | 15.5 ° C | % 76 | 13.7 km/h | 11% |
| 16 August 2026 Sun | Sunny |
11.3 ° C | 22.9 ° C | 16.6 ° C | % 65 | 11.9 km/h | 5% |
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