Average annual temperature is 14.7 °C
Absolute maximum temperature: 40.8 °C
Absolute minimum temperature: -12.7 °C
Number of sunny days: 227 days
Number of rainy days: 134 days
Number of snow days: 4 days
Look at detailed online map of Hillsboro
* Weather data for Hillsboro United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 13.9 | 18.2 | 22.2 | 30.7 | 32.1 | 37.6 | 38.0 | 40.8 | 35.0 | 32.1 | 22.4 | 17.4 |
| Average daytime temperature (°C) | 7.3 | 10.1 | 13.1 | 22.1 | 26.5 | 30.6 | 33.0 | 33.8 | 29.8 | 21.3 | 13.6 | 9.3 |
| Average temperature (°C) | 1.6 | 3.0 | 6.6 | 14.3 | 19.8 | 24.3 | 26.8 | 27.4 | 23.4 | 15.6 | 8.0 | 4.5 |
| Average night temperature (°C) | -2.3 | -2.5 | 1.6 | 8.1 | 14.2 | 18.8 | 21.7 | 21.8 | 18.1 | 10.8 | 3.4 | 1.1 |
| Absolute minimum temperature (°C) | -12.3 | -12.7 | -7.9 | -1.8 | 5.0 | 13.9 | 17.3 | 15.9 | 13.4 | -4.1 | -7.0 | -4.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.8 | 8.7 | 8.5 | 10.1 | 10.4 | 11.9 | 11.9 | 12.0 | 10.1 | 8.2 | 7.5 | 5.5 |
| Precipitation (mm) | 36 | 41 | 22 | 41 | 59 | 65 | 55 | 64 | 57 | 59 | 44 | 70 |
| Sunny days | 21 | 20 | 19 | 22 | 15 | 13 | 15 | 19 | 21 | 19 | 23 | 20 |
| Rainy days | 10 | 6 | 12 | 8 | 16 | 17 | 16 | 12 | 9 | 12 | 6 | 10 |
| Snow days | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Hillsboro during the most sunny months:
The largest precipitation sum in Hillsboro is at