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
| 21 December 2025 Sun 4.4 ° C ( 39.9°F )  Clear |
Feels Like : 2.6 ° C / 36.6°F Humidity : % 36 Pressure : 1012 mb Wind Speed : 7.6 kmph / 4.7 miles from SSE 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 25 |
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 |
|---|---|---|---|---|---|---|---|
| 20 December 2025 Sat | Sunny |
-10.5 ° C | 8.6 ° C | -2.2 ° C | % 73 | 33.1 km/h | 0% |
| 21 December 2025 Sun | Sunny |
-7.5 ° C | -0.7 ° C | -2.6 ° C | % 71 | 26.3 km/h | 0% |
| 22 December 2025 Mon |  Partly Cloudy |
-9.2 ° C | 1.4 ° C | -4.1 ° C | % 61 | 12.2 km/h | 0% |
| 23 December 2025 Tue |  Moderate rain |
-0.2 ° C | 2.6 ° C | 1.6 ° C | % 85 | 27.4 km/h | 88% |
| 24 December 2025 Wed |  Cloudy |
-0.8 ° C | 3.6 ° C | 1.1 ° C | % 81 | 27.4 km/h | 0% |
| 25 December 2025 Thu | Moderate rain |
-0.7 ° C | 8.7 ° C | 3.1 ° C | % 93 | 16.9 km/h | 86% |
| 26 December 2025 Fri |  Patchy rain nearby |
-1.8 ° C | 13.5 ° C | 8.5 ° C | % 91 | 31 km/h | 80% |
| 27 December 2025 Sat | Partly Cloudy |
-4.2 ° C | 0.1 ° C | -2.3 ° C | % 64 | 18 km/h | 0% |
| 28 December 2025 Sun | Partly Cloudy |
-4.6 ° C | 2.9 ° C | -1.6 ° C | % 58 | 6.5 km/h | 0% |
| 29 December 2025 Mon | Patchy rain nearby |
-2.8 ° C | 4.8 ° C | 2.4 ° C | % 68 | 22 km/h | 76% |
| 30 December 2025 Tue | Moderate rain |
3.7 ° C | 10.8 ° C | 7.9 ° C | % 94 | 27 km/h | 88% |
| 31 December 2025 Wed | Patchy rain nearby |
1.1 ° C | 3.8 ° C | 2.6 ° C | % 90 | 9.7 km/h | 0% |
| 01 January 2026 Thu | Patchy rain nearby |
0.9 ° C | 3.4 ° C | 2.1 ° C | % 95 | 9 km/h | 74% |
| 02 January 2026 Fri | Patchy rain nearby |
2.6 ° C | 5.4 ° C | 4.1 ° C | % 96 | 16.9 km/h | 78% |
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