Portland Hillsboro Airport (HIO) 15 Day Weather Forecast, Hillsboro United States
Current weather conditions and 15 day weather forecast for Portland Hillsboro Airport in Hillsboro, 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 HIO
| 21 December 2025 Sun 8.3 ° C ( 46.9°F )  Partly cloudy |
Feels Like : 6.1 ° C / 43°F Humidity : % 74 Pressure : 1016 mb Wind Speed : 13 kmph / 8.1 miles from SSW 
Visibility : 16 km Precipitation (rainfall) : 0.03 mm Cloud (%) : 75 |
15-day weather forecast for Portland Hillsboro Airport, Hillsboro, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 20 December 2025 Sat |  Patchy rain nearby |
4.2 ° C | 11.5 ° C | 5.8 ° C | % 89 | 14.4 km/h | 79% |
| 21 December 2025 Sun |  Moderate rain |
3.5 ° C | 6.4 ° C | 5.1 ° C | % 90 | 14 km/h | 88% |
| 22 December 2025 Mon | Moderate rain |
1.2 ° C | 7 ° C | 4.2 ° C | % 94 | 20.9 km/h | 86% |
| 23 December 2025 Tue | Moderate rain |
4.4 ° C | 6.3 ° C | 5.5 ° C | % 94 | 10.8 km/h | 85% |
| 24 December 2025 Wed | Moderate rain |
4 ° C | 5.5 ° C | 4.6 ° C | % 94 | 12.6 km/h | 79% |
| 25 December 2025 Thu | Patchy rain nearby |
3.1 ° C | 7.4 ° C | 5 ° C | % 93 | 5.8 km/h | 86% |
| 26 December 2025 Fri | Patchy rain nearby |
3.5 ° C | 8.2 ° C | 5.3 ° C | % 90 | 6.8 km/h | 70% |
| 27 December 2025 Sat | Patchy rain nearby |
5.4 ° C | 8.7 ° C | 7 ° C | % 91 | 12.2 km/h | 86% |
| 28 December 2025 Sun | Moderate rain |
5.7 ° C | 7.2 ° C | 7 ° C | % 91 | 18 km/h | 85% |
| 29 December 2025 Mon | Patchy rain nearby |
3 ° C | 6.7 ° C | 5.2 ° C | % 88 | 14 km/h | 86% |
| 30 December 2025 Tue |  Cloudy |
2.1 ° C | 6.1 ° C | 3.3 ° C | % 84 | 7.9 km/h | 0% |
| 31 December 2025 Wed | Patchy rain nearby |
1.7 ° C | 5.8 ° C | 3.7 ° C | % 84 | 13.7 km/h | 79% |
| 01 January 2026 Thu | Patchy rain nearby |
3.2 ° C | 7.2 ° C | 4.6 ° C | % 88 | 16.6 km/h | 88% |
| 02 January 2026 Fri | Patchy rain nearby |
2.5 ° C | 4.9 ° C | 3.9 ° C | % 92 | 16.9 km/h | 86% |
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