Average annual temperature is 16.9 °C
Absolute maximum temperature: 42.3 °C
Absolute minimum temperature: -8.3 °C
Number of sunny days: 248 days
Number of rainy days: 111 days
Number of snow days: 6 days
Look at detailed online map of Arch
* Weather data for Arch 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) | 20.8 | 23.6 | 26.4 | 29.7 | 33.5 | 40.7 | 42.3 | 40.9 | 38.5 | 30.2 | 28.5 | 21.5 |
| Average daytime temperature (°C) | 12.9 | 15.1 | 19.6 | 24.6 | 28.4 | 32.1 | 37.5 | 36.0 | 31.5 | 24.3 | 18.1 | 13.9 |
| Average temperature (°C) | 5.8 | 6.6 | 11.5 | 15.6 | 20.6 | 24.5 | 30.0 | 29.2 | 24.3 | 16.9 | 10.3 | 6.4 |
| Average night temperature (°C) | 0.5 | 0.7 | 4.9 | 8.4 | 13.6 | 17.4 | 22.9 | 22.6 | 17.8 | 10.7 | 4.4 | 0.9 |
| Absolute minimum temperature (°C) | -8.1 | -8.3 | -2.3 | 1.9 | 7.5 | 12.0 | 18.3 | 15.9 | 12.8 | -3.1 | -5.1 | -4.9 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 8.1 | 8.5 | 10.2 | 11.1 | 11.5 | 12.7 | 12.8 | 11.9 | 10.6 | 9.5 | 8.2 | 7.9 |
| Precipitation (mm) | 14 | 10 | 5 | 6 | 33 | 27 | 12 | 9 | 49 | 38 | 9 | 43 |
| Sunny days | 25 | 22 | 21 | 22 | 8 | 17 | 20 | 21 | 20 | 25 | 24 | 23 |
| Rainy days | 3 | 4 | 10 | 8 | 23 | 13 | 11 | 10 | 10 | 6 | 6 | 7 |
| Snow days | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Arch is at