United StatesThe weather in September in South Dakota
It's warm in September in South Dakota with an average temperature of 26°C. Temperatures this month range from a low of 22°C to a high of 31°C. At night, you can expect temperatures between 10°C and 17°C.
Looking for great weather? September is a good time to be in South Dakota. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for South Dakota, United States. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 40°C in 2023, South Dakota reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 8°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of 3°C to a highest value of 23°C.
Rainfall amount
In September, there is an average of 44 mm of precipitation, spread over 7 days. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in September for South Dakota
Click on any day in September to get detailed info about the usual weather on that day in South Dakota. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| South Dakota | New York | |
|---|---|---|
| Average temperature | 26°C | 27°C |
| Max. temperature | 31°C | 31°C |
| Min. temperature | 10°C | -5°C |
| Total precipitation | 44 mm | 57 mm |
| Rainy days | 7 days | 9 days |
Start of September
The month of September starts in South Dakota with hot temps, averaging around 28°C during the day and nights around 15°C.
Mid September
By mid-September, daytime temps drop to around 27°C, with nights around 13°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of September
By the end of September, the average daytime temperature in South Dakota is around 24°C, while nighttime temps are about 12°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Check out the climate of South Dakota for all months and discover the best travel time
The climate in South Dakota is based on weather data from . Other places, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in South Dakota to get the full picture of the climate.
Temperature charts
These charts show the average temperatures in September in South Dakota, United States. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in South Dakota
Temperature in September in South Dakota over the years
Precipitation charts
These charts show the average amount of precipitation in September in South Dakota, United States. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in South Dakota
Total precipitation in September in South Dakota over the years
Daily UV index in September in South Dakota
This chart shows the average daily UV index in September in South Dakota, 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.
Weather experiences in September in South Dakota
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Average weather in South Dakota by month
Click on a month below to see detailed weather info for South Dakota. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.