Weather forecast for 10 daysSeneca, SD

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 70°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 15mphNNE 15°
  • Humidity: 49%
  • UV index: 3
  • Sunrise: 7:58 am CDT
  • Sunset: 6:48 pm CDT
  • ▼
On Sunday, in Seneca, sun-filled conditions are expected to persist.
The daytime temperature will peak at an agreeable 69.8°F, significantly contrasting with the night's low of a cold 37.4°F.
The predicted high will feel warmer, consistent with September's climate average of 74.5°F.
Sunrise will be at 7:58 am and sunset at 6:48 pm; the daylight will last for 10h and 50min.

10-day overview

Daily temperatures

Warmest day: Friday 75°C.
Coldest period: Sunday - Monday 55°C.

Chance of precipitation

Highest chance: Saturday 43%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 70°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 15mphNNE 15°
  • Humidity: 49%
  • UV index: 3
  • Sunrise: 7:58 am CDT
  • Sunset: 6:48 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 64°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 12mphE 79°
  • Humidity: 52%
  • UV index: 3
  • Sunrise: 7:59 am CDT
  • Sunset: 6:46 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 70°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 14mphSSE 159°
  • Humidity: 68%
  • UV index: 3
  • Sunrise: 8:00 am CDT
  • Sunset: 6:44 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 68°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 9mphNNE 24°
  • Humidity: 70%
  • UV index: 3
  • Sunrise: 8:02 am CDT
  • Sunset: 6:43 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 73°F
  • 55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 14mphSE 140°
  • Humidity: 70%
  • UV index: 3
  • Sunrise: 8:03 am CDT
  • Sunset: 6:41 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 75°F
  • 54°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 23%
  • Precipitation: 0"
  • Wind: 21mphSSE 160°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 8:04 am CDT
  • Sunset: 6:39 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 59°F
  • 37°F
AM Showers
AM Showers
  • Precip. probability: 43%
  • Precipitation: 0.08"
  • Wind: 16mphWNW 287°
  • Humidity: 67%
  • UV index: 2
  • Sunrise: 8:06 am CDT
  • Sunset: 6:38 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 55°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0.16"
  • Wind: 11mphNNE 25°
  • Humidity: 65%
  • UV index: 3
  • Sunrise: 8:07 am CDT
  • Sunset: 6:36 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 55°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 13mphESE 117°
  • Humidity: 75%
  • UV index: 3
  • Sunrise: 8:08 am CDT
  • Sunset: 6:35 pm CDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 59°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 14mphSE 142°
  • Humidity: 74%
  • UV index: 2
  • Sunrise: 8:10 am CDT
  • Sunset: 6:33 pm CDT
  • ▼
Looking ahead, conditions suggest a period of cloudy, mostly clear and showery weather is predicted.
Rain is expected on Saturday and next Sunday.
Significant changes in temperature are expected in the upcoming days. Maximum temperatures are forecasted between 55.4°F and 75.2°F, while the fluctuation in night temperatures will be also significant, as the overnight lows will vary from 37.4°F to 55.4°F.
Friday is expected to be the warmest, reaching up to 75.2°F; the coldest days will be next Sunday and Monday, with a maximum of 55.4°F.
Updated: Oct 18, 2026 @ 05:29:49 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, conditions remain stable and sunny, with little cloud presence.

Today, the highest temperature will be 69.8°F, while the lowest temperature will be 37.4°F.
Today, the maximum temperature will be uncommonly higher than the average highest temperature of 55.9°F in October. The lowest temperature will be in line with the average low of 40.6°F.

On Sunday, in Seneca, sunrise will be at 7:58 am and sunset at 6:48 pm (CDT).

In Seneca, the length of the day today will be 10h and 50min.