Average annual temperature is 9.8 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: -28.5 °C
Number of sunny days: 219 days
Number of rainy days: 104 days
Number of snow days: 42 days
Look at detailed online map of Oglala Lakota County
* Weather data for Oglala Lakota County 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) | 11.4 | 13.4 | 19.2 | 27.0 | 27.9 | 32.8 | 35.6 | 36.3 | 35.4 | 29.8 | 21.3 | 15.0 |
| Average daytime temperature (°C) | 0.6 | 4.4 | 7.0 | 11.8 | 22.5 | 25.9 | 29.4 | 29.3 | 25.9 | 16.4 | 11.0 | 6.0 |
| Average temperature (°C) | -3.3 | -2.2 | -0.3 | 5.2 | 16.5 | 20.0 | 22.9 | 22.9 | 19.3 | 9.5 | 4.8 | 1.0 |
| Average night temperature (°C) | -6.5 | -6.3 | -5.0 | 0.1 | 10.8 | 14.9 | 16.9 | 17.7 | 14.2 | 4.9 | 1.0 | -2.2 |
| Absolute minimum temperature (°C) | -22.8 | -28.5 | -15.1 | -11.3 | 0.1 | 10.1 | 12.0 | 11.9 | 9.6 | -10.2 | -8.4 | -10.1 |
| 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 | 9.0 |
| 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) | 5.3 | 7.7 | 8.3 | 10.0 | 11.5 | 11.9 | 13.0 | 11.6 | 10.8 | 8.2 | 7.5 | 6.0 |
| Precipitation (mm) | 47 | 28 | 55 | 40 | 114 | 101 | 25 | 73 | 48 | 98 | 4 | 28 |
| Sunny days | 16 | 16 | 14 | 17 | 12 | 12 | 21 | 20 | 21 | 21 | 25 | 24 |
| Rainy days | 4 | 5 | 6 | 9 | 19 | 18 | 10 | 11 | 9 | 8 | 3 | 2 |
| Snow days | 11 | 7 | 11 | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 5 |
The best time to visit Oglala Lakota County during the most sunny months:
Months with the longest average daylight duration in Oglala Lakota County:
The largest precipitation sum in Oglala Lakota County is at