Average annual temperature is 14.6 °C
Absolute maximum temperature: 36.2 °C
Absolute minimum temperature: -7.3 °C
Number of sunny days: 186 days
Number of rainy days: 179 days
Look at detailed online map of Custer
* Weather data for Custer 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) | 18.6 | 22.7 | 25.5 | 28.3 | 29.8 | 32.6 | 35.7 | 36.2 | 32.3 | 29.6 | 25.6 | 17.3 |
| Average daytime temperature (°C) | 9.8 | 13.5 | 14.1 | 20.0 | 24.4 | 28.2 | 30.9 | 29.6 | 27.9 | 20.9 | 14.7 | 10.7 |
| Average temperature (°C) | 5.6 | 7.2 | 8.0 | 13.3 | 18.2 | 21.9 | 25.1 | 24.0 | 21.5 | 15.5 | 8.9 | 5.7 |
| Average night temperature (°C) | 2.4 | 2.8 | 3.3 | 7.8 | 12.8 | 16.4 | 20.2 | 19.4 | 16.1 | 11.1 | 4.6 | 2.2 |
| Absolute minimum temperature (°C) | -5.3 | -7.1 | -7.3 | 0.3 | 4.1 | 11.4 | 16.1 | 13.8 | 12.0 | -2.0 | -4.6 | -6.5 |
| 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) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| 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) | 4.7 | 7.4 | 8.0 | 9.5 | 10.4 | 10.9 | 11.7 | 10.4 | 10.8 | 7.6 | 7.8 | 5.7 |
| Precipitation (mm) | 146 | 112 | 187 | 97 | 67 | 90 | 90 | 81 | 23 | 120 | 48 | 84 |
| Sunny days | 12 | 15 | 16 | 16 | 15 | 15 | 11 | 14 | 17 | 19 | 21 | 15 |
| Rainy days | 19 | 13 | 15 | 14 | 16 | 15 | 20 | 17 | 13 | 12 | 9 | 16 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Custer during the most sunny months:
The largest precipitation sum in Custer is at