Average annual temperature is 10.3 °C
Absolute maximum temperature: 40.3 °C
Absolute minimum temperature: -25.2 °C
Number of sunny days: 231 days
Number of rainy days: 104 days
Number of snow days: 30 days
Look at detailed online map of Yankton Reservation
* Weather data for Yankton Reservation 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) | 3.1 | 4.7 | 17.0 | 29.3 | 31.4 | 35.4 | 36.6 | 40.3 | 39.4 | 32.0 | 20.0 | 12.9 |
| Average daytime temperature (°C) | -3.2 | -0.2 | 4.9 | 15.7 | 25.0 | 29.3 | 30.2 | 31.5 | 27.5 | 16.5 | 10.9 | 5.1 |
| Average temperature (°C) | -6.6 | -5.6 | -1.6 | 8.6 | 18.3 | 23.5 | 24.1 | 24.8 | 21.1 | 11.1 | 4.7 | 0.2 |
| Average night temperature (°C) | -9.8 | -9.9 | -5.7 | 2.9 | 12.3 | 18.0 | 18.7 | 19.4 | 15.8 | 6.8 | 0.3 | -3.5 |
| Absolute minimum temperature (°C) | -22.8 | -25.2 | -12.7 | -6.5 | 2.1 | 12.4 | 13.8 | 14.6 | 10.2 | -7.2 | -7.3 | -12.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 4.8 | 7.8 | 7.4 | 10.0 | 11.7 | 12.6 | 12.7 | 11.6 | 10.1 | 7.1 | 7.1 | 5.7 |
| Precipitation (mm) | 72 | 27 | 25 | 16 | 74 | 50 | 47 | 70 | 42 | 131 | 12 | 43 |
| Sunny days | 21 | 19 | 20 | 18 | 15 | 14 | 15 | 22 | 22 | 17 | 26 | 22 |
| Rainy days | 2 | 3 | 5 | 7 | 16 | 16 | 16 | 9 | 8 | 13 | 3 | 6 |
| Snow days | 8 | 6 | 6 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3 |
The best time to visit Yankton Reservation during the most sunny months:
Months with the longest average daylight duration in Yankton Reservation:
The largest precipitation sum in Yankton Reservation is at