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
| 05 December 2025 Fri 7.8 ° C ( 46°F )  Light rain |
Feels Like : 7 ° C / 44.6°F Humidity : % 100 Pressure : 1019 mb Wind Speed : 5.8 kmph / 3.6 miles from S 
Visibility : 4 km Precipitation (rainfall) : 0.01 mm Cloud (%) : 100 |
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 |
|---|---|---|---|---|---|---|---|
| 05 December 2025 Fri |  Moderate rain |
7.3 ° C | 15.2 ° C | 10.4 ° C | % 90 | 15.8 km/h | 88% |
| 06 December 2025 Sat |  Cloudy |
9 ° C | 11.2 ° C | 9.8 ° C | % 88 | 14.4 km/h | 0% |
| 07 December 2025 Sun |  Overcast |
7.8 ° C | 10.1 ° C | 9.1 ° C | % 93 | 17.3 km/h | 0% |
| 08 December 2025 Mon |  Heavy rain |
7.5 ° C | 12.4 ° C | 10 ° C | % 92 | 22.7 km/h | 73% |
| 09 December 2025 Tue | Moderate rain |
8.4 ° C | 10.9 ° C | 10 ° C | % 87 | 18 km/h | 65% |
| 10 December 2025 Wed |  Patchy rain nearby |
6.5 ° C | 8.8 ° C | 7.4 ° C | % 81 | 14.4 km/h | 88% |
| 11 December 2025 Thu | Patchy rain nearby |
5.9 ° C | 6.7 ° C | 6.3 ° C | % 92 | 12.2 km/h | 89% |
| 12 December 2025 Fri | Moderate rain |
4.4 ° C | 8.9 ° C | 6.2 ° C | % 92 | 16.6 km/h | 86% |
| 13 December 2025 Sat | Patchy rain nearby |
2.8 ° C | 4.8 ° C | 3.6 ° C | % 91 | 14.8 km/h | 86% |
| 14 December 2025 Sun | Patchy rain nearby |
1.3 ° C | 3 ° C | 2.2 ° C | % 92 | 10.8 km/h | 89% |
| 15 December 2025 Mon |  Moderate or heavy snow in area with thunder |
-0.8 ° C | -0.1 ° C | -0.2 ° C | % 98 | 5 km/h | 88% |
| 16 December 2025 Tue |  Heavy snow |
-2.3 ° C | 2 ° C | 0.3 ° C | % 96 | 15.8 km/h | 81% |
| 17 December 2025 Wed | Patchy rain nearby |
-1.5 ° C | 2.6 ° C | 1.1 ° C | % 96 | 18.4 km/h | 87% |
| 18 December 2025 Thu |  Moderate snow |
-4.5 ° C | -1.7 ° C | -1.9 ° C | % 92 | 11.9 km/h | 80% |
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