Weather forecast for 10 daysSummerville, SD
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 32°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 17mphNNE 24°
- Humidity: 24%
- UV index: 3
- Sunrise: 7:09 am MDT
- Sunset: 5:57 pm MDT
- details ▼
On Sunday, in Summerville, expect bright skies and plenty of sunshine.
Temperature readings will span from a daytime high of a breezy 66.2°F to a night low of an icy 32°F.
Today, expect conditions that are warmer than normal, with a temperature that reflects September's typical maximum of 73°F.
Sunrise was at 7:09 am and sunset will be at 5:57 pm; the daylight will last for 10h and 48min.
Temperature readings will span from a daytime high of a breezy 66.2°F to a night low of an icy 32°F.
Today, expect conditions that are warmer than normal, with a temperature that reflects September's typical maximum of 73°F.
Sunrise was at 7:09 am and sunset will be at 5:57 pm; the daylight will last for 10h and 48min.
10-day overview
Daily temperatures
Warmest day: Friday 75°C.
Coldest day: Tuesday 27.10. 52°C.
Coldest day: Tuesday 27.10. 52°C.
Chance of precipitation
Highest chance: Friday 35%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 66°F
- 32°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 17mphNNE 24°
- Humidity: 24%
- UV index: 3
- Sunrise: 7:09 am MDT
- Sunset: 5:57 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 64°F
- 37°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 16mphSE 129°
- Humidity: 44%
- UV index: 3
- Sunrise: 7:11 am MDT
- Sunset: 5:56 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 72°F
- 41°F
Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 11mphSSE 152°
- Humidity: 59%
- UV index: 3
- Sunrise: 7:12 am MDT
- Sunset: 5:54 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 68°F
- 43°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 9mphNE 51°
- Humidity: 61%
- UV index: 3
- Sunrise: 7:13 am MDT
- Sunset: 5:52 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 73°F
- 55°F
Partly Cloudy
- Precip. probability: 19%
- Precipitation: 0"
- Wind: 18mphSSE 149°
- Humidity: 63%
- UV index: 3
- Sunrise: 7:15 am MDT
- Sunset: 5:51 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 75°F
- 41°F
AM Showers
- Precip. probability: 35%
- Precipitation: 0.04"
- Wind: 17mphS 189°
- Humidity: 60%
- UV index: 2
- Sunrise: 7:16 am MDT
- Sunset: 5:49 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 54°F
- 32°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 20mphWNW 297°
- Humidity: 51%
- UV index: 3
- Sunrise: 7:18 am MDT
- Sunset: 5:47 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 57°F
- 37°F
Mostly Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 14mphSE 125°
- Humidity: 54%
- UV index: 3
- Sunrise: 7:19 am MDT
- Sunset: 5:46 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 57°F
- 37°F
Partly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 14mphESE 115°
- Humidity: 64%
- UV index: 2
- Sunrise: 7:20 am MDT
- Sunset: 5:44 pm MDT
- details ▼
- Tuesday
- Oct 27, 2026
- 52°F
- 37°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 13mphESE 123°
- Humidity: 72%
- UV index: 2
- Sunrise: 7:22 am MDT
- Sunset: 5:42 pm MDT
- details ▼
Models point to a combination of dry and sunny, cloudy and rainy weather is anticipated.
With a 35% probability, rainfall is forecasted only for Friday. The precipitation will be minimal at 0.04".
Substantial differences in temperature are forecasted across the forecast period. Forecast highs will fluctuate between 51.8°F and 75.2°F, while the nightly low temperatures will show also a considerable swing, as the overnight lows will vary from 32°F to 55.4°F.
The warmest day will be Friday, with a maximum of 75.2°F; expect the coldest day on next Tuesday with a high of 51.8°F.
With a 35% probability, rainfall is forecasted only for Friday. The precipitation will be minimal at 0.04".
Substantial differences in temperature are forecasted across the forecast period. Forecast highs will fluctuate between 51.8°F and 75.2°F, while the nightly low temperatures will show also a considerable swing, as the overnight lows will vary from 32°F to 55.4°F.
The warmest day will be Friday, with a maximum of 75.2°F; expect the coldest day on next Tuesday with a high of 51.8°F.
Updated: Oct 18, 2026 @ 16:48:17 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Today, expect sunny weather with a crisp, clear sky.
Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 32°F.
Today, the highest temperature will be significantly higher than the average maximum of 54.7°F in October. The lowest temperature today will be a couple of degrees lower than the average low temperature.
Today, the highest temperature will be significantly higher than the average maximum of 54.7°F in October. The lowest temperature today will be a couple of degrees lower than the average low temperature.
On Sunday, in Summerville, sunrise was at 7:09 am and sunset will be at 5:57 pm (MDT).
In Summerville, the length of the day today will be 10h and 48min.
