Average annual temperature is 12.0 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: -14.5 °C
Number of sunny days: 175 days
Number of rainy days: 181 days
Number of snow days: 9 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) | 16.2 | 17.6 | 16.7 | 29.8 | 29.8 | 33.7 | 32.9 | 30.3 | 33.1 | 27.6 | 19.9 | 15.6 |
| Average daytime temperature (°C) | 7.1 | 8.3 | 9.8 | 18.4 | 22.2 | 25.4 | 29.3 | 26.9 | 23.7 | 18.6 | 10.3 | 7.6 |
| Average temperature (°C) | 3.4 | 2.6 | 4.0 | 11.8 | 15.2 | 19.4 | 23.6 | 21.7 | 18.7 | 13.5 | 5.1 | 3.8 |
| Average night temperature (°C) | 0.2 | -1.8 | -0.7 | 6.4 | 8.5 | 14.2 | 18.8 | 17.3 | 14.7 | 9.3 | 0.8 | 0.5 |
| Absolute minimum temperature (°C) | -5.2 | -14.5 | -7.2 | -2.8 | 2.3 | 8.2 | 14.0 | 12.8 | 9.7 | 2.7 | -5.3 | -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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.7 | 11.9 | 13.3 | 14.5 | 15.0 | 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) | 4.6 | 6.8 | 7.4 | 8.5 | 11.7 | 11.1 | 11.9 | 10.5 | 8.3 | 8.1 | 7.5 | 4.3 |
| Precipitation (mm) | 113 | 39 | 90 | 113 | 34 | 141 | 106 | 93 | 131 | 84 | 74 | 177 |
| Sunny days | 10 | 17 | 10 | 16 | 21 | 13 | 8 | 12 | 15 | 17 | 21 | 15 |
| Rainy days | 19 | 9 | 19 | 14 | 10 | 17 | 23 | 19 | 15 | 14 | 8 | 14 |
| Snow days | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit Custer during the most sunny months:
The largest precipitation sum in Custer is at