Weather forecast for todayKeystone, SD

Weather forecast for today

Current condition 1:35 am MDT

  • 55°F
  • Feels like:
    54°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 9mphS 190°
  • Humidity: 59%
  • Dewpoint: 43°F
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Currently, in Keystone, nothing but clear skies and excellent visibility.
The temperature is a mild 55.4°F, and the feels-like temperature is almost the same at 53.6°F. The current temperature is almost at the minimum-expected 57.2°F for today.

Thursday Oct 22, 2026

  • 75°F
  • 57°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphSW 228°
  • Humidity: 46%
  • UV index: 3
  • Sunrise: 7:17 am MDT
  • Sunset: 5:58 pm MDT
  • ▼
Today, predominantly sunny weather will make for pleasant outdoor conditions.
Forecasted temperatures will peak at a temperate 75.2°F and dip to a minimum of a moderate 57.2°F.
The day's peak of 75.2°F reflects September's seasonal pattern more than October's.
Sunrise will be at 7:17 am and sunset at 5:58 pm; the daylight will last for 10h and 41min.

Hourly overview

Hourly temperatures

Warmest hour: 2 pm 73°C.
Coldest period: 5 am - 8 am 55°C.

Chance of precipitation

Highest chance: 2 am - 8 am 1%.

Hourly weather forecast

  • 2 am
  • 57°F
  • Feels like:
    54°F
Mostly Clear
Mostly Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 10mphSW 215°
  • Humidity: 59%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 57°F
  • Feels like:
    55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 8mphSW 219°
  • Humidity: 62%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 55°F
  • Feels like:
    54°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphSW 233°
  • Humidity: 66%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:17 am
  • 8 am
  • 55°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphWSW 255°
  • Humidity: 64%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphWSW 240°
  • Humidity: 47%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 72°F
  • Feels like:
    72°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSW 221°
  • Humidity: 38%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 73°F
  • Feels like:
    73°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSW 222°
  • Humidity: 35%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 73°F
  • Feels like:
    73°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSW 218°
  • Humidity: 37%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
Sunset: 5:58 pm
  • 6 pm
  • 64°F
  • Feels like:
    64°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSSW 192°
  • Humidity: 49%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 61°F
  • Feels like:
    61°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphSW 216°
  • Humidity: 56%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 59°F
  • Feels like:
    59°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphWSW 237°
  • Humidity: 57%
  • Pressure: 29.8"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Keystone, a combination of overcast and sunny weather is forecasted.
The temperature will vary between a minimum of 55.4°F and a maximum of 73.4°F. The warmest part of the day will be from 1 pm to 4 pm.
The day’s peak temperature will reflect September's norm of 71.4°F more than October's 54°F. The lowest temperature is also expected to be more similar to September's minimum average of 51.1°F than October's 36.7°F.
Updated: Oct 22, 2026 @ 07:35:17 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (1:35 am MDT) it is 55.4°F in Keystone.

On Thursday, mainly sunny skies with just a few high clouds are anticipated.

Today, the maximum temperature will be 75.2°F, while the minimum temperature will be 57.2°F.
The maximum temperature will be uncommonly higher than the average highest temperature of 54°F in October. The lowest temperature will be also noticeably higher than the average low of 36.7°F.

On Thursday, in Keystone, sunrise will be at 7:17 am and sunset at 5:58 pm (MDT).

Today, the daylight will last for 10h and 41min.