Average annual temperature is 14.0 °C
Absolute maximum temperature: 37.8 °C
Absolute minimum temperature: -16.6 °C
Number of sunny days: 236 days
Number of rainy days: 116 days
Number of snow days: 13 days
Look at detailed online map of Boise City
* Weather data for Boise City 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) | 21.5 | 21.4 | 24.8 | 31.0 | 32.5 | 37.8 | 37.5 | 36.5 | 35.7 | 28.7 | 28.8 | 22.1 |
| Average daytime temperature (°C) | 9.4 | 12.5 | 15.8 | 22.3 | 25.1 | 27.6 | 33.3 | 32.4 | 29.5 | 21.6 | 15.9 | 11.3 |
| Average temperature (°C) | 2.7 | 3.8 | 7.4 | 13.3 | 18.1 | 21.0 | 25.8 | 25.7 | 22.6 | 14.4 | 8.6 | 4.5 |
| Average night temperature (°C) | -2.1 | -2.4 | 1.1 | 6.3 | 12.2 | 15.0 | 19.3 | 19.3 | 16.6 | 8.5 | 3.4 | -0.1 |
| Absolute minimum temperature (°C) | -16.6 | -13.9 | -6.1 | -3.5 | 7.2 | 10.5 | 16.0 | 15.5 | 11.8 | -6.1 | -5.2 | -5.4 |
| 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 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| 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) | 7.6 | 8.7 | 9.7 | 10.9 | 10.4 | 12.0 | 12.5 | 11.7 | 10.3 | 9.5 | 8.2 | 7.5 |
| Precipitation (mm) | 10 | 17 | 15 | 44 | 67 | 77 | 54 | 10 | 29 | 11 | 5 | 33 |
| Sunny days | 21 | 20 | 22 | 23 | 11 | 10 | 13 | 23 | 22 | 24 | 25 | 22 |
| Rainy days | 7 | 3 | 7 | 7 | 20 | 20 | 18 | 8 | 8 | 7 | 4 | 7 |
| Snow days | 3 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit Boise City during the most sunny months:
The largest precipitation sum in Boise City is at