Weather forecast for 10 daysAllen, SD

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 68°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 15mphN 358°
  • Humidity: 41%
  • UV index: 4
  • Sunrise: 7:05 am MDT
  • Sunset: 6:00 pm MDT
  • ▼
On Sunday, October 18, open skies and radiant sunshine are expected.
A notable temperature range, reaching a high of a delightful 68°F and a low of a cold 33.8°F, is forecasted.
Today, the temperature will be higher and more consistent with September's typical high of 77°F than with October's 58.5°F.
Sunrise will be at 7:05 am and sunset at 6:00 pm; the daylight will last for 10h and 55min.

10-day overview

Daily temperatures

Warmest period: Thursday - Friday 77°C.
Minimum temperature: 59°C.

Chance of precipitation

Highest chance: Friday 55%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 68°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 15mphN 358°
  • Humidity: 41%
  • UV index: 4
  • Sunrise: 7:05 am MDT
  • Sunset: 6:00 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 64°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 8mphE 81°
  • Humidity: 52%
  • UV index: 3
  • Sunrise: 7:06 am MDT
  • Sunset: 5:58 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 75°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 13mphSSW 195°
  • Humidity: 49%
  • UV index: 3
  • Sunrise: 7:07 am MDT
  • Sunset: 5:56 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 68°F
  • 46°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 8mphN 354°
  • Humidity: 55%
  • UV index: 3
  • Sunrise: 7:09 am MDT
  • Sunset: 5:55 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 77°F
  • 59°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 16mphS 174°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:10 am MDT
  • Sunset: 5:53 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 77°F
  • 48°F
PM Showers
PM Showers
  • Precip. probability: 55%
  • Precipitation: 0.16"
  • Wind: 18mphSSW 199°
  • Humidity: 50%
  • UV index: 3
  • Sunrise: 7:11 am MDT
  • Sunset: 5:52 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 59°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 10%
  • Precipitation: 0"
  • Wind: 13mphNNW 330°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:12 am MDT
  • Sunset: 5:50 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 61°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 12mphSSE 165°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:14 am MDT
  • Sunset: 5:49 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 64°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 13mphSSE 168°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:15 am MDT
  • Sunset: 5:47 pm MDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 59°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 12mphSSW 197°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 7:16 am MDT
  • Sunset: 5:46 pm MDT
  • ▼
Over the next ten days, a mix of clear, cloud-filled and rainy weather is anticipated.
With a 55% probability, rainfall is anticipated only on Friday. The precipitation will be light at 0.16".
Temperature differences will be noticeable in the upcoming days. Forecast highs will fluctuate between 59°F and 77°F, while the nightly low temperatures will show also a considerable swing, as the minimum temperature is expected to range between 33.8°F and 59°F.
The warmest days will be Thursday and Friday, with a maximum of 77°F; with a maximum temperature of 59°F, Saturday and next Tuesday will be the coldest days.
Updated: Oct 18, 2026 @ 12:36:03 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, mostly sunny and dry conditions will continue.

Today, the highest temperature will be 68°F, while the lowest temperature will be 33.8°F.
The maximum temperature will be significantly higher than the average highest temperature of 58.5°F in October. The lowest temperature today will be relatively lower than the average low temperature.

On Sunday, in Allen, sunrise will be at 7:05 am and sunset at 6:00 pm (MDT).

In Allen, the length of the day today will be 10h and 55min.