Weather forecast for 10 daysSouth Yankton, NE

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 72°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 16mphS 190°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:46 am CDT
  • Sunset: 6:42 pm CDT
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Today, on Sunday, October 18, sunny conditions are expected to continue.
Substantial temperature variations are anticipated, soaring to a maximum of a pleasant 71.6°F and descending to a minimum of a cold 41°F.
Today, weather will feel warmer as the high trends toward September's average of 76.1°F.
Sunrise will be at 7:46 am and sunset at 6:42 pm; the daylight will last for 10h and 56min.

10-day overview

Daily temperatures

Warmest day: Thursday 79°C.
Coldest day: Sunday 25.10. 61°C.

Chance of precipitation

Highest chance: Saturday 31%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 72°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 16mphS 190°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:46 am CDT
  • Sunset: 6:42 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 10mphSE 126°
  • Humidity: 61%
  • UV index: 4
  • Sunrise: 7:48 am CDT
  • Sunset: 6:40 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 72°F
  • 50°F
Sunny
Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 14mphSSE 158°
  • Humidity: 60%
  • UV index: 4
  • Sunrise: 7:49 am CDT
  • Sunset: 6:39 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 75°F
  • 48°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 7mphS 179°
  • Humidity: 65%
  • UV index: 3
  • Sunrise: 7:50 am CDT
  • Sunset: 6:37 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 79°F
  • 59°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0.04"
  • Wind: 11mphSE 145°
  • Humidity: 69%
  • UV index: 3
  • Sunrise: 7:51 am CDT
  • Sunset: 6:36 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 77°F
  • 61°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 13%
  • Precipitation: 0.04"
  • Wind: 21mphSSE 158°
  • Humidity: 54%
  • UV index: 2
  • Sunrise: 7:52 am CDT
  • Sunset: 6:34 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 72°F
  • 46°F
AM Showers
AM Showers
  • Precip. probability: 31%
  • Precipitation: 0.04"
  • Wind: 16mphSW 221°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:54 am CDT
  • Sunset: 6:33 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 61°F
  • 48°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 14%
  • Precipitation: 0"
  • Wind: 9mphNE 39°
  • Humidity: 66%
  • UV index: 3
  • Sunrise: 7:55 am CDT
  • Sunset: 6:31 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 68°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 13mphSE 143°
  • Humidity: 71%
  • UV index: 2
  • Sunrise: 7:56 am CDT
  • Sunset: 6:30 pm CDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 66°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 15mphSSE 157°
  • Humidity: 65%
  • UV index: 3
  • Sunrise: 7:57 am CDT
  • Sunset: 6:28 pm CDT
  • ▼
Looking ahead, conditions suggest a period of clear, cloud-filled and rainy weather is forecasted.
Rainfall is expected on Friday and Saturday. The days with the most rainfall will be Thursday through Saturday, with minimal precipitation of 0.04".
Noticeable swings in temperature are expected in the coming days. Maximum temperatures are forecasted between 60.8°F and 78.8°F, while the lowest night temperatures will vary also significantly, as the overnight lows will vary from 41°F to 60.8°F.
Thursday is expected to be the warmest, reaching up to 78.8°F; the lowest daytime temperature of the period will be reached on next Sunday, peaking at 60.8°F.
Updated: Oct 18, 2026 @ 10:20:48 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, sunshine will likely continue with scattered clouds at most.

Today, the highest temperature will be 71.6°F, while the lowest temperature will be 41°F.
Today, the highest temperature will be significantly higher than the average maximum of 59.4°F in October. The lowest temperature will be in line with the average low of 42.6°F.

On Sunday, in South Yankton, sunrise will be at 7:46 am and sunset at 6:42 pm (CDT).

In South Yankton, Nebraska, the length of the day today will be 10h and 56min.