Weather forecast for 10 daysSummit, SD
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 17mphWNW 295°
- Humidity: 48%
- UV index: 3
- Sunrise: 7:48 am CDT
- Sunset: 6:37 pm CDT
- details ▼
On Sunday, October 18, skies are expected to be clear and full of sunshine.
Temperature measurements will peak at a breezy 66.2°F, with a considerable drop to a low of a cold 37.4°F.
Tomorrow, the maximum temperature will be higher and more reflective of September's average high of 72.5°F than October's of 55.2°F.
Sunrise will be at 7:48 am and sunset at 6:37 pm; tomorrow's daylight will last for 10h and 49min.
Temperature measurements will peak at a breezy 66.2°F, with a considerable drop to a low of a cold 37.4°F.
Tomorrow, the maximum temperature will be higher and more reflective of September's average high of 72.5°F than October's of 55.2°F.
Sunrise will be at 7:48 am and sunset at 6:37 pm; tomorrow's daylight will last for 10h and 49min.
10-day overview
Daily temperatures
Warmest day: Friday 73°C.
Coldest period: Sunday - Monday 55°C.
Coldest period: Sunday - Monday 55°C.
Chance of precipitation
Highest chance: Saturday 24.10. 50%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 43°F
Partly Cloudy / Wind
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 23mphSW 220°
- Humidity: 55%
- UV index: 0
- Sunrise: 7:47 am CDT
- Sunset: 6:39 pm CDT
- details ▼
- Sunday
- Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 17mphWNW 295°
- Humidity: 48%
- UV index: 3
- Sunrise: 7:48 am CDT
- Sunset: 6:37 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 63°F
- 39°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 11mphENE 74°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:49 am CDT
- Sunset: 6:36 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 68°F
- 45°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 16mphS 178°
- Humidity: 62%
- UV index: 3
- Sunrise: 7:51 am CDT
- Sunset: 6:34 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 68°F
- 43°F
Mostly Sunny
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 8mphWNW 301°
- Humidity: 66%
- UV index: 3
- Sunrise: 7:52 am CDT
- Sunset: 6:32 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 72°F
- 55°F
Mostly Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 11mphSSE 158°
- Humidity: 66%
- UV index: 3
- Sunrise: 7:53 am CDT
- Sunset: 6:31 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 73°F
- 57°F
AM Showers / Wind
- Precip. probability: 33%
- Precipitation: 0.04"
- Wind: 22mphS 170°
- Humidity: 63%
- UV index: 2
- Sunrise: 7:55 am CDT
- Sunset: 6:29 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 64°F
- 43°F
Showers
- Precip. probability: 50%
- Precipitation: 0.2"
- Wind: 20mphSW 222°
- Humidity: 64%
- UV index: 2
- Sunrise: 7:56 am CDT
- Sunset: 6:27 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 55°F
- 41°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 11mphNW 312°
- Humidity: 60%
- UV index: 3
- Sunrise: 7:57 am CDT
- Sunset: 6:26 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 55°F
- 45°F
Partly Cloudy
- Precip. probability: 16%
- Precipitation: 0"
- Wind: 13mphSE 144°
- Humidity: 71%
- UV index: 3
- Sunrise: 7:59 am CDT
- Sunset: 6:24 pm CDT
- details ▼
During the ten-day period, mostly clear, cloudy and damp weather is forecasted.
Rainfall is anticipated on Friday and next Saturday.
Significant changes in temperature are expected in the coming days. Highs will range from 55.4°F to 73.4°F, while the variation in nighttime lows will be also notably wide, as the overnight lows will vary from 37.4°F to 57.2°F.
The warmest day will be Friday, with a maximum of 73.4°F; the coldest days will be next Sunday and Monday, with a maximum of 55.4°F.
Rainfall is anticipated on Friday and next Saturday.
Significant changes in temperature are expected in the coming days. Highs will range from 55.4°F to 73.4°F, while the variation in nighttime lows will be also notably wide, as the overnight lows will vary from 37.4°F to 57.2°F.
The warmest day will be Friday, with a maximum of 73.4°F; the coldest days will be next Sunday and Monday, with a maximum of 55.4°F.
Updated: Oct 18, 2026 @ 01:21:48 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
On Sunday, the forecast calls for abundant sunshine.
Tomorrow, the maximum temperature will be 66.2°F, while the minimum temperature will be 37.4°F.
The highest temperature tomorrow will be uncommonly higher than the average maximum of 55.2°F in October. The lowest temperature will be in line with the average low of 40.1°F.
The highest temperature tomorrow will be uncommonly higher than the average maximum of 55.2°F in October. The lowest temperature will be in line with the average low of 40.1°F.
On Sunday, in Summit, sunrise will be at 7:48 am and sunset at 6:37 pm (CDT).
In Summit, tomorrow, there will be 10h and 49min of daylight.
