Weather forecast for 10 daysGroton, SD

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 70°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 12mphNE 45°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:53 am CDT
  • Sunset: 6:41 pm CDT
  • ▼
Today, sunshine and minimal clouds are in the outlook.
The day's temperature scale will range from a significant high of an agreeable 69.8°F to a minimum of an icy 37.4°F.
Today, weather will feel warmer as the high trends toward September's average of 74.3°F.
Sunrise will be at 7:53 am and sunset at 6:41 pm; the daylight will last for 10h and 49min.

10-day overview

Daily temperatures

Warmest day: Friday 77°C.
Coldest day: Sunday 25.10. 59°C.

Chance of precipitation

Highest chance: Tuesday 27.10. 24%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 70°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 12mphNE 45°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:53 am CDT
  • Sunset: 6:41 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 11mphENE 78°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:54 am CDT
  • Sunset: 6:40 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 72°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 16mphS 171°
  • Humidity: 62%
  • UV index: 3
  • Sunrise: 7:55 am CDT
  • Sunset: 6:38 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 70°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 9mphNE 42°
  • Humidity: 69%
  • UV index: 3
  • Sunrise: 7:57 am CDT
  • Sunset: 6:36 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 75°F
  • 59°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 12mphSSE 154°
  • Humidity: 66%
  • UV index: 3
  • Sunrise: 7:58 am CDT
  • Sunset: 6:35 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 77°F
  • 57°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 22mphSSE 165°
  • Humidity: 55%
  • UV index: 2
  • Sunrise: 7:59 am CDT
  • Sunset: 6:33 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 63°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 16mphW 260°
  • Humidity: 61%
  • UV index: 2
  • Sunrise: 8:01 am CDT
  • Sunset: 6:31 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 59°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 10mphENE 78°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 8:02 am CDT
  • Sunset: 6:30 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 61°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 13mphSE 126°
  • Humidity: 71%
  • UV index: 3
  • Sunrise: 8:03 am CDT
  • Sunset: 6:28 pm CDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 61°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 15mphSSE 153°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 8:05 am CDT
  • Sunset: 6:27 pm CDT
  • ▼
Ten-day trends indicate that a combination of sun-filled and cloud-filled weather is forecasted.
Rain is not predicted in Groton in the upcoming period.
The temperature will vary considerably in the next ten days. Highs will range from 59°F to 77°F, while the nightly low temperatures will show also a considerable swing, as temperatures overnight will fluctuate from 37.4°F up to 59°F.
Expect the warmest day on Friday, with temperatures peaking at 77°F; with the highest temperature of 59°F, next Sunday will be the coldest day.
Updated: Oct 18, 2026 @ 10:34:22 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, conditions will remain bright with clear skies.

Today, the maximum temperature will be 69.8°F, while the minimum temperature will be 37.4°F.
The maximum temperature today will be noticeably higher than the average highest temperature of 56.3°F in October. The lowest temperature will be in line with the average low of 40.1°F.

On Sunday, in Groton, sunrise will be at 7:53 am and sunset at 6:41 pm (CDT).

In Groton, South Dakota, the length of the day today will be 10h and 49min.