Average annual temperature is 19.7 °C
Absolute maximum temperature: 42.8 °C
Absolute minimum temperature: -4.9 °C
Number of sunny days: 300 days
Number of rainy days: 64 days
Number of snow days: 1 day
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* Weather data for Duncan 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) | 19.3 | 22.5 | 26.2 | 33.3 | 35.0 | 41.1 | 42.8 | 42.2 | 39.0 | 33.1 | 28.6 | 20.9 |
| Average daytime temperature (°C) | 12.7 | 16.1 | 20.1 | 27.6 | 30.9 | 35.6 | 40.5 | 37.2 | 34.6 | 28.8 | 21.1 | 15.8 |
| Average temperature (°C) | 6.2 | 8.4 | 12.9 | 19.8 | 24.1 | 28.4 | 33.8 | 30.7 | 27.5 | 21.5 | 14.1 | 8.6 |
| Average night temperature (°C) | 0.8 | 2.2 | 6.7 | 11.4 | 16.7 | 20.4 | 25.5 | 23.9 | 20.0 | 14.2 | 7.3 | 2.1 |
| Absolute minimum temperature (°C) | -4.9 | -4.8 | -1.3 | -0.5 | 10.6 | 15.2 | 22.2 | 20.3 | 15.8 | 2.2 | 0.1 | -3.4 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.3 | 11.0 | 12.0 | 13.0 | 13.8 | 14.3 | 14.1 | 13.3 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 10.0 | 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) | 7.7 | 8.6 | 9.9 | 12.0 | 12.3 | 12.7 | 12.5 | 11.4 | 11.0 | 10.1 | 9.2 | 8.3 |
| Precipitation (mm) | 54 | 18 | 25 | 0 | 10 | 0 | 0 | 9 | 21 | 4 | 13 | 21 |
| Sunny days | 21 | 19 | 21 | 30 | 25 | 30 | 29 | 23 | 26 | 28 | 24 | 24 |
| Rainy days | 10 | 8 | 10 | 0 | 6 | 0 | 2 | 8 | 4 | 3 | 6 | 7 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Duncan is at