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 March 2026 Sat 3.9 ° C ( 39°F )  Partly cloudy |
Feels Like : 2 ° C / 35.5°F Humidity : % 86 Pressure : 1021 mb Wind Speed : 7.6 kmph / 4.7 miles from NNW 
Visibility : 16 km Precipitation (rainfall) : 0.01 mm Cloud (%) : 50 |
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 March 2026 Sat |  Patchy rain nearby |
3.3 ° C | 11.3 ° C | 7.5 ° C | % 69 | 14.4 km/h | 88% |
| 15 March 2026 Sun |  Overcast |
1.2 ° C | 11.5 ° C | 6.2 ° C | % 73 | 4.7 km/h | 0% |
| 16 March 2026 Mon | Overcast |
7.4 ° C | 21.6 ° C | 12.1 ° C | % 70 | 4.3 km/h | 0% |
| 17 March 2026 Tue | Partly Cloudy |
7.7 ° C | 14 ° C | 10 ° C | % 74 | 5.4 km/h | 0% |
| 18 March 2026 Wed | Patchy rain nearby |
7.5 ° C | 10.6 ° C | 9.1 ° C | % 88 | 5.8 km/h | 79% |
| 19 March 2026 Thu | Patchy rain nearby |
10.2 ° C | 19.7 ° C | 13.7 ° C | % 82 | 11.5 km/h | 77% |
| 20 March 2026 Fri | Overcast |
11.3 ° C | 15.4 ° C | 12.9 ° C | % 93 | 3.6 km/h | 0% |
| 21 March 2026 Sat | Patchy rain nearby |
5.1 ° C | 10.8 ° C | 9.3 ° C | % 92 | 9.7 km/h | 84% |
| 22 March 2026 Sun | Partly Cloudy |
2.7 ° C | 11.4 ° C | 6.2 ° C | % 69 | 15.5 km/h | 0% |
| 23 March 2026 Mon | Overcast |
3.6 ° C | 12.4 ° C | 7.1 ° C | % 64 | 4.3 km/h | 0% |
| 24 March 2026 Tue | Patchy rain nearby |
3.7 ° C | 11.9 ° C | 6.9 ° C | % 72 | 14.8 km/h | 63% |
| 25 March 2026 Wed | Patchy rain nearby |
2.5 ° C | 8.8 ° C | 5.4 ° C | % 84 | 10.4 km/h | 87% |
| 26 March 2026 Thu |  Sunny |
0.5 ° C | 17.2 ° C | 7.5 ° C | % 69 | 11.2 km/h | 0% |
| 27 March 2026 Fri | Sunny |
4.5 ° C | 19.4 ° C | 11.1 ° C | % 64 | 12.6 km/h | 0% |
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