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Weather & Climate
Yankton, South Dakota, United States
Overview
Climate data and monthly weather averages for Yankton.
Key Metrics
Annual Avg
9.5°C
Summer Avg
23.6°C
Winter Avg
-5.1°C
Record High
45.5°C
Record Low
-31.7°C
Annual Precipitation
668 mm
Avg Humidity
69%
Summer Humidity
63%
Winter Humidity
79%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 15.1° | -6.2° | -31.7° | 13.6 | 80% | 63 | 69.5 |
| Feb | 22.8° | -4.7° | -25.7° | 18.8 | 76% | 85 | 59.8 |
| Mar | 30.1° | 2.5° | -26.6° | 36 | 70% | 121 | 65.7 |
| Apr | 33.4° | 9.1° | -12.6° | 75.9 | 65% | 150 | 66.5 |
| May | 36.6° | 15.7° | -4.5° | 90.2 | 65% | 181 | 54.5 |
| Jun | 40.6° | 22° | 5.7° | 102.9 | 66% | 197 | 50.8 |
| Jul | 45.5° | 25.4° | 9.4° | 72.5 | 60% | 208 | 46.4 |
| Aug | 42.8° | 23.5° | 8° | 81.5 | 62% | 176 | 48.3 |
| Sep | 39.5° | 18.8° | 2.5° | 72.9 | 61% | 136 | 50 |
| Oct | 33.1° | 9.7° | -11.1° | 57 | 66% | 99 | 62.9 |
| Nov | 25.9° | 2.5° | -15.2° | 22.8 | 71% | 67 | 59.9 |
| Dec | 17.2° | -4.3° | -27.5° | 23.9 | 81% | 52 | 64.8 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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