🇺🇸 Weather in Hillsboro
Current Weather in Hillsboro
Extreme Heat Watch issued June 9 at 10:42AM PDT until June 15 at 11:00PM PDT by NWS Portland OR
12°C
Feels like 11°C. Patchy rain nearby.
Map Overlays:
Hourly Forecast for Hillsboro
00:00
12°
29%
01:00
12°
13%
02:00
12°
13%
03:00
12°
18%
04:00
11°
9%
05:00
11°
14%
06:00
12°
13%
07:00
12°
7%
08:00
13°
5%
09:00
15°
6%
10:00
15°
23%
11:00
16°
18%
12:00
16°
12%
13:00
17°
12%
14:00
18°
5%
15:00
19°
4%
16:00
19°
3%
17:00
20°
4%
18:00
19°
3%
19:00
18°
3%
20:00
15°
4%
21:00
13°
4%
22:00
12°
6%
23:00
10°
8%
14-Day Forecast for Hillsboro
2026-06-09
Patchy rain nearby
18° /
12°
2026-06-10
Patchy rain nearby
20° /
10°
2026-06-11
Sunny
26° /
7°
2026-06-12
Sunny
26° /
8°
2026-06-13
Sunny
29° /
8°
2026-06-14
Sunny
33° /
13°
2026-06-15
Sunny
34° /
16°
Additional Forecasts for Hillsboro
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 113.0 μg/m³
O₃ (Ozone) 55.0 μg/m³
NO₂ (Nitrogen Dioxide) 4.4 μg/m³
SO₂ (Sulphur Dioxide) 0.7 μg/m³
PM2.5 (Fine particles) 6.9 μg/m³
PM10 (Coarse particles) 10.0 μg/m³
Historical Weather
Weather Forecasts for Other Cities in United States
Weather in Hillsboro — FAQ
Answers refreshed each request based on current conditions in Hillsboro.
What is the weather like right now in Hillsboro?
Right now in Hillsboro, United States the temperature is 12.0°C (feels like 11.2°C), with patchy rain nearby. Relative humidity is 71% and wind is 8.6 km/h.
What is today's high and low temperature in Hillsboro?
Today's forecast high in Hillsboro is 17.5°C and the overnight low is 12.2°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Hillsboro today?
The chance of precipitation in Hillsboro today is 65%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Hillsboro differ from nearby cities?
Even short distances can change temperatures noticeably. Hillsboro's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.