Yankton, SD Weather & Climate Normals
What a normal year in Yankton actually looks like
On the 30-year record NOAA keeps for Yankton, SD, the comfort score comes out to 37/100, weather-driven: Heat, cold, snow, or rainfall here are heavy enough that they shape daily life for a large part of the year. Only 4 months a year land in the 55–75°F range this site treats as mild.
How much Yankton's weather actually swings
Average temperatures in Yankton run from 20°F in Jan up to 75°F in Jul, a 55.2°F seasonal swing, one of the widest gaps in this dataset.
Yankton, month by month
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 30°F | 10°F | 0.65in | 6.7in |
| Feb | 35°F | 14°F | 0.91in | 8.5in |
| Mar | 47°F | 25°F | 1.6in | 4.7in |
| Apr | 60°F | 35°F | 3.36in | 3.7in |
| May | 72°F | 48°F | 3.68in | 0.2in |
| Jun | 82°F | 59°F | 4.03in | 0in |
| Jul | 87°F | 64°F | 3.46in | 0in |
| Aug | 85°F | 62°F | 3.26in | 0in |
| Sep | 78°F | 52°F | 2.85in | 0in |
| Oct | 63°F | 39°F | 2.56in | 0.8in |
| Nov | 47°F | 25°F | 1.27in | 5.9in |
| Dec | 34°F | 15°F | 1.03in | 7.6in |
If you're timing a visit, May, Jun, Aug, and Sep are Yankton's mildest stretch; if you're moving there, you should plan around Jul's heat and Jan's cold instead.
How wet Yankton actually gets
Over a typical year, Yankton sees about 28.66in of precipitation a year across roughly 88 days with measurable rain or snow, with 38.1in of snow a year.
Yankton against the rest of the country
Out of 4876 cities scored here, Yankton comes in at 4767; within SD alone it ranks 17 of 18. Population is about 15,670.
Checking the actual forecast
These figures come from Yankton 2 E, SD US, the NOAA station 1.7 miles from Yankton, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why this uses the nearest NOAA station · How the comfort score is calculated