Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
Weather Guide
Yankton, South Dakota, United States Average Monthly Weather
Weather score54Mixed annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 15°C, sunshine averages 7.7h per day, and rainfall totals about 594mm.
Annual weather
Annual averages
Temp
15°C
Rain
594mm
Annual total
Sun
7.7h
Weather score
54
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 73mm, which is relatively low for holiday planning.
Bright
Sunshine averages 9.9h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Yankton, South Dakota, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August30°C average high
August is one of Yankton's warmest months, with daytime heat above the yearly average.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
August73mm average rain
August is wetter than Yankton's yearly average, so flexible plans matter more.
Driest monthsJanuary to March and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August9.9 hours average sun
August is brighter than Yankton's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
August82 weather score
August scores above Yankton's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
