Average annual temperature is 11.9 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: -11.5 °C
Number of sunny days: 150 days
Number of rainy days: 203 days
Number of snow days: 12 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) | 15.4 | 20.7 | 20.2 | 26.9 | 30.1 | 33.3 | 32.7 | 31.9 | 33.6 | 27.8 | 18.0 | 15.4 |
| Average daytime temperature (°C) | 7.1 | 10.5 | 10.1 | 18.0 | 21.8 | 25.6 | 29.0 | 27.0 | 24.4 | 17.9 | 10.9 | 8.5 |
| Average temperature (°C) | 2.9 | 3.8 | 4.3 | 11.1 | 15.0 | 19.3 | 22.9 | 21.2 | 18.6 | 12.9 | 5.5 | 4.3 |
| Average night temperature (°C) | -0.1 | -0.9 | -0.1 | 5.4 | 9.0 | 13.8 | 18.3 | 16.5 | 13.8 | 8.9 | 1.5 | 1.2 |
| Absolute minimum temperature (°C) | -6.4 | -11.5 | -8.0 | -1.7 | 1.7 | 8.9 | 14.3 | 11.8 | 8.3 | 1.1 | -7.2 | -5.3 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.4 |
| 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) | 3.0 | 6.9 | 6.6 | 8.8 | 10.4 | 10.9 | 11.5 | 10.8 | 9.2 | 6.8 | 6.7 | 4.5 |
| Precipitation (mm) | 113 | 63 | 116 | 69 | 92 | 122 | 102 | 90 | 37 | 92 | 42 | 78 |
| Sunny days | 8 | 13 | 11 | 15 | 20 | 10 | 5 | 9 | 12 | 15 | 19 | 13 |
| Rainy days | 18 | 14 | 16 | 15 | 11 | 20 | 26 | 22 | 18 | 16 | 10 | 17 |
| Snow days | 5 | 1 | 4 | 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