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
| 22 December 2025 Mon -6.7 ° C ( 19.9°F )  Clear |
Feels Like : -10.6 ° C / 13°F Humidity : % 74 Pressure : 1029 mb Wind Speed : 7.9 kmph / 4.9 miles from WNW 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
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 |
|---|---|---|---|---|---|---|---|
| 22 December 2025 Mon |  Light freezing rain |
-6.4 ° C | 1.6 ° C | -2.3 ° C | % 62 | 9 km/h | 63% |
| 23 December 2025 Tue |  Heavy rain |
-1.4 ° C | 2.8 ° C | 1.1 ° C | % 91 | 26.6 km/h | 87% |
| 24 December 2025 Wed |  Overcast |
-2.2 ° C | -0.4 ° C | -0.7 ° C | % 94 | 26.3 km/h | 0% |
| 25 December 2025 Thu |  Moderate rain |
0.4 ° C | 9.7 ° C | 4.9 ° C | % 94 | 16.2 km/h | 85% |
| 26 December 2025 Fri | Moderate rain |
-1.4 ° C | 14 ° C | 10.6 ° C | % 92 | 32 km/h | 77% |
| 27 December 2025 Sat |  Partly Cloudy |
-3.1 ° C | 4.9 ° C | -0.1 ° C | % 74 | 7.9 km/h | 0% |
| 28 December 2025 Sun |  Patchy rain nearby |
-5.4 ° C | 7 ° C | 1.2 ° C | % 89 | 33.8 km/h | 76% |
| 29 December 2025 Mon |  Blowing snow |
-8.3 ° C | -4.8 ° C | -7.1 ° C | % 66 | 34.2 km/h | 0% |
| 30 December 2025 Tue | Sunny |
-8.3 ° C | 1 ° C | -3.1 ° C | % 59 | 31.3 km/h | 0% |
| 31 December 2025 Wed | Light freezing rain |
-6.5 ° C | -2.9 ° C | -3.9 ° C | % 63 | 26.3 km/h | 79% |
| 01 January 2026 Thu | Sunny |
-3.2 ° C | 8.6 ° C | 3.2 ° C | % 69 | 20.2 km/h | 0% |
| 02 January 2026 Fri | Patchy rain nearby |
3.5 ° C | 11.7 ° C | 8.4 ° C | % 74 | 29.5 km/h | 88% |
| 03 January 2026 Sat |  Moderate snow |
-4.8 ° C | -1.7 ° C | -2 ° C | % 81 | 25.9 km/h | 86% |
| 04 January 2026 Sun | Overcast |
-4.7 ° C | 0.8 ° C | -2.2 ° C | % 61 | 19.4 km/h | 0% |
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