Weather forecast for todaySummerville, SD

Weather forecast for today

Current condition 2:57 am MDT

  • 43°F
  • Feels like:
    39°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 7mphWNW 300°
  • Humidity: 60%
  • Dewpoint: 30°F
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Currently, the sky is a flawless clear blue with no cloud formations.
The temperature is a chilly 42.8°F, the feels-like temperature is slightly different, estimated at an icy 39.2°F. The current temperature is far from today's maximum-forecasted 68°F.

Sunday Oct 18, 2026

  • 68°F
  • 34°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 14mphNNE 16°
  • Humidity: 34%
  • UV index: 3
  • Sunrise: 7:09 am MDT
  • Sunset: 5:57 pm MDT
  • ▼
On Sunday, October 18, mainly sunny skies with just a few high clouds are anticipated.
Temperature changes will be considerable, from a high of a pleasant 68°F to a low of a cold 33.8°F.
Meteorological data shows 68°F is more characteristic of September's climate profile than October's.
Sunrise will be at 7:09 am and sunset at 5:57 pm; the daylight will last for 10h and 48min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 66°C.
Coldest hour: 12 am 41°C.

Chance of precipitation

Highest chance: 3 am 1%.

Hourly weather forecast

  • 4 am
  • 45°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphNW 316°
  • Humidity: 56%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 46°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphNNW 340°
  • Humidity: 55%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:09 am
  • 8 am
  • 46°F
  • Feels like:
    43°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphN 349°
  • Humidity: 59%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 57°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphN 9°
  • Humidity: 40%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 64°F
  • Feels like:
    63°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphNNE 22°
  • Humidity: 25%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphNNE 26°
  • Humidity: 21%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 64°F
  • Feels like:
    64°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphNNE 28°
  • Humidity: 22%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
Sunset: 5:57 pm
  • 6 pm
  • 57°F
  • Feels like:
    55°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphNE 38°
  • Humidity: 32%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 50°F
  • Feels like:
    46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNE 49°
  • Humidity: 44%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 45°F
  • Feels like:
    43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphENE 64°
  • Humidity: 50%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Summerville, a combination of sun-filled and cloudy weather is predicted.
The temperature will be between the lowest temperature of 42.8°F and the highest temperature of 66.2°F. The warmest part of the day will be from 1 pm to 3 pm.
The highest temperature today will resemble September's average maximum of 73°F more than October's average. Today, the nighttime low will be moderately lower than October's typical minimum of 39.4°F.
Updated: Oct 18, 2026 @ 08:57:24 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The temperature at 2:57 am MDT is 42.8°F.

On Sunday, a bright and mostly cloud-free sky is in store.

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 54.7°F in October. Today, the lowest temperature will be relatively lower than the average low temperature.

On Sunday, in Summerville, sunrise will be at 7:09 am and sunset at 5:57 pm (MDT).

In Summerville, today, there will be 10h and 48min of daylight.