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
| 14 May 2026 Thu 16.7 ° C ( 62.1°F )  Partly cloudy |
Feels Like : 16.7 ° C / 62.1°F Humidity : % 53 Pressure : 1021 mb Wind Speed : 9.7 kmph / 6 miles from SW 
Visibility : 16 km Precipitation (rainfall) : 0 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 |
|---|---|---|---|---|---|---|---|
| 14 May 2026 Thu |  Patchy rain nearby |
8.6 ° C | 18.7 ° C | 13.5 ° C | % 70 | 15.1 km/h | 80% |
| 15 May 2026 Fri | Patchy rain nearby |
5.5 ° C | 13.7 ° C | 9.6 ° C | % 72 | 18.7 km/h | 89% |
| 16 May 2026 Sat | Patchy rain nearby |
3.8 ° C | 14.5 ° C | 9.1 ° C | % 74 | 18.4 km/h | 89% |
| 17 May 2026 Sun |  Cloudy |
4.5 ° C | 16.4 ° C | 10.4 ° C | % 63 | 9 km/h | 0% |
| 18 May 2026 Mon | Partly Cloudy |
4.3 ° C | 18.7 ° C | 11.6 ° C | % 67 | 7.9 km/h | 0% |
| 19 May 2026 Tue | Patchy rain nearby |
7.1 ° C | 19.8 ° C | 11.1 ° C | % 72 | 16.9 km/h | 0% |
| 20 May 2026 Wed |  Sunny |
5.3 ° C | 23 ° C | 13.8 ° C | % 61 | 5.8 km/h | 0% |
| 21 May 2026 Thu | Partly Cloudy |
6.9 ° C | 19.6 ° C | 13.8 ° C | % 59 | 15.1 km/h | 0% |
| 22 May 2026 Fri | Partly Cloudy |
4.7 ° C | 15.9 ° C | 10.2 ° C | % 60 | 19.1 km/h | 0% |
| 23 May 2026 Sat | Patchy rain nearby |
4.4 ° C | 15.8 ° C | 10.5 ° C | % 67 | 6.5 km/h | 0% |
| 24 May 2026 Sun | Partly Cloudy |
5.1 ° C | 23.2 ° C | 13.5 ° C | % 64 | 14.4 km/h | 0% |
| 25 May 2026 Mon | Partly Cloudy |
10.2 ° C | 23.2 ° C | 15.7 ° C | % 60 | 12.6 km/h | 0% |
| 26 May 2026 Tue | Sunny |
7.3 ° C | 23.6 ° C | 15.2 ° C | % 50 | 9 km/h | 0% |
| 27 May 2026 Wed | Sunny |
7.1 ° C | 24.4 ° C | 15.8 ° C | % 51 | 13.3 km/h | 0% |
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