Yankton (SD) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Yankton.
Climate overview of Yankton
The climate in Yankton, South Dakota, United States of America, is marked by large temperature swings across the seasons, ranging from 31°C (88°F) in July to -1°C (30°F) in January.
With around 694 mm (27 in) of annual rain/snowfall, the city has moderate precipitation levels. June is the wettest month and January the driest. It also has a distinct dry season from November to March, with very warm summers and very cold winters.
Yankton Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Yankton - and find the best time to visit.
Monthly Temperature in Yankton
In Yankton, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in July to a very cold -1°C (30°F) in the coolest month, January.
Nights vary from 17°C (63°F) in July to around -12°C (10°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Yankton
On average, Yankton receives a reasonable amount of rain/snowfall, with an annual precipitation of 694 mm (27 in). The climate in Yankton shows significant variation throughout the year. Expect high rainfall in June, the wettest month, with an average of 102 mm (4 in) of precipitation over 13 rainy days.
In contrast, the driest month January offers drier and sunnier days, with around 14 mm (0.6 in) of snowfall over 6 snowy days. For more details, please visit our Yankton Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Yankton
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, August and September
- Warmest weather: July
- Fewest rainy days: January and November
- Seasonal pattern: A distinct dry season from November to March, with very warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -12°C (10°F).
Frequently asked questions about the climate in Yankton
What is the best time to visit Yankton?
May, August and September typically offer the most optimal weather in Yankton. In contrast, January, February, March and December tend to have less optimal conditions. Yankton has a distinct dry season from November to March, with very warm summers and very cold winters.
What temperatures can I expect in Yankton?
Daytime highs range from -1°C (30°F) in January to 31°C (88°F) in July. Nighttime lows range from -12°C (10°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Yankton get?
Annual rainfall is around 694 mm (27 in). June is the wettest month with 102 mm (4 in), while January is the driest with 14 mm (0.6 in).
Yankton 3-Day Forecast
Yankton on the map
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