Normal weather for Yankton in September
It's warm in September in Yankton with an average temperature of 26°C. Temperatures this month range from a low of 23°C to a high of 29°C. At night, you can expect temperatures between 9°C and 18°C.
In September, there is an average of 58 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the South.
Yankton in September |
New York | ||
|---|---|---|---|
 Average Temperature |
26°C | 27°C | |
 High Temp |
29°C | 31°C | |
| Low Temp |
23°C | 21°C | |
 Total Precipitation |
58 mm | 57 mm | |
| Rainy Days |
9 days | 9 days | |
Start of September
The month of September starts in Yankton with hot temps, averaging around 27°C during the day and nights around 15°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
With the temperature difference between day and night, it’s smart to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. For the evening and morning, a shirt, maybe a light sweater, and thin pants are recommended.
Mid September
By mid-September, daytime temps stay steady at around 27°C, with nights around 14°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
Since it cools down at night, it’s a good idea to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. For the evening and morning, a shirt, maybe a light sweater, and thin pants are recommended.
End of September
By the end of September, the average daytime temperature in Yankton is around 25°C, while nighttime temps are about 12°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
Because temperatures drop in the evening, wearing layers is recommended. A T-shirt, light pants or skirt, and a light jacket are great for the day. In the evening and morning, choose a light jacket, sweater or hoodie, and long pants.
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UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Yankton?
Looking for great weather? September is a good time to be in Yankton. The temperatures are nice, and there’s not too much rain.
Temperature records for Yankton in September
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Daily Temperature in September in Yankton
This chart shows the average daily high and low temperatures in September for Yankton, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Yankton
The chart below shows the average daily precipitation in September for Yankton, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 9 days of precipitation in Yankton.
Daily UV Index in September in Yankton
This chart shows the average daily UV index in September in Yankton, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Yankton Over the Years
This chart shows the average temperature in September in Yankton, measured in degrees Celsius, over the past few years.
Total Precipitation in September in Yankton Over the Years
This chart shows the average precipitation in September in Yankton, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in September for Yankton
Click on any day in September to get detailed info about the usual weather on that day in Yankton. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Yankton
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Average Weather in Yankton by Month
Click on a month below to see detailed weather info for Yankton. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
