Average annual temperature is 12.3 °C
Absolute maximum temperature: 36.0 °C
Absolute minimum temperature: -18.2 °C
Number of sunny days: 207 days
Number of rainy days: 140 days
Number of snow days: 18 days
Look at detailed online map of Hillsboro (historical)
* Weather data for Hillsboro (historical) 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) | 14.5 | 12.6 | 22.7 | 27.1 | 32.1 | 34.2 | 35.1 | 36.0 | 33.9 | 30.9 | 19.4 | 14.8 |
| Average daytime temperature (°C) | 3.2 | 6.2 | 8.8 | 18.2 | 25.2 | 29.8 | 29.1 | 28.5 | 26.8 | 18.6 | 11.0 | 7.5 |
| Average temperature (°C) | -1.1 | 0.3 | 3.4 | 11.1 | 18.6 | 23.7 | 23.8 | 23.6 | 20.9 | 13.8 | 5.9 | 3.3 |
| Average night temperature (°C) | -4.0 | -4.4 | -0.6 | 5.6 | 12.5 | 17.6 | 18.7 | 19.1 | 16.0 | 9.8 | 1.7 | 0.5 |
| Absolute minimum temperature (°C) | -15.9 | -18.2 | -12.0 | -2.1 | 3.9 | 9.8 | 13.4 | 12.0 | 11.6 | -2.9 | -11.2 | -7.0 |
| 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) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| 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) | 4.4 | 7.3 | 6.9 | 9.7 | 11.7 | 12.6 | 12.6 | 11.2 | 10.1 | 7.5 | 7.3 | 4.7 |
| Precipitation (mm) | 65 | 108 | 93 | 60 | 44 | 42 | 98 | 65 | 69 | 58 | 16 | 78 |
| Sunny days | 16 | 14 | 11 | 18 | 22 | 17 | 15 | 18 | 19 | 17 | 24 | 16 |
| Rainy days | 6 | 11 | 17 | 12 | 9 | 13 | 16 | 13 | 11 | 14 | 4 | 14 |
| Snow days | 9 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 |
The best time to visit Hillsboro (historical) during the most sunny months:
The largest precipitation sum in Hillsboro (historical) is at