Weather forecast for tomorrowRapid Valley, SD

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 64°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 12mphSSE 158°
  • Humidity: 43%
  • UV index: 3
  • Sunrise: 7:12 am MDT
  • Sunset: 6:02 pm MDT
  • ▼
On Monday, October 19, conditions will remain bright with clear skies.
The expected temperature range extends from a high of a breezy 64.4°F to a low of a chilly 42.8°F.
The forecasted temperature is slightly warmer than October's regular maximum of 56.5°F.
Sunrise will be at 7:12 am and sunset at 6:02 pm; tomorrow's daylight will last for 10h and 50min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 63°C.
Coldest hour: 6 am 37°C.

Chance of precipitation

Highest chance: 9 pm 2%.

Hourly weather forecast

  • 12 am
  • 43°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphNW 309°
  • Humidity: 56%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 41°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphWNW 303°
  • Humidity: 62%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 39°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphW 266°
  • Humidity: 64%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 37°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphW 261°
  • Humidity: 66%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:12 am
  • 8 am
  • 43°F
  • Feels like:
    41°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSW 219°
  • Humidity: 63%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 52°F
  • Feels like:
    50°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSSE 155°
  • Humidity: 45%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 59°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphSSE 150°
  • Humidity: 37%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphSE 146°
  • Humidity: 33%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphSE 141°
  • Humidity: 34%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 57°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSE 140°
  • Humidity: 44%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:02 pm
  • 8 pm
  • 50°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphSSE 166°
  • Humidity: 59%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 48°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphSSW 200°
  • Humidity: 67%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Monday, primarily bright and occasionally gloomy weather is expected.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 62.6°F. The warmest part of the day will be from 1 pm to 4 pm.
The temperature is expected to be a couple of degrees higher than the average peak in October, which is 56.5°F. The temperature low is forecasted to be also comparable to the usual October value of 39.9°F.
Updated: Oct 18, 2026 @ 10:29:28 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Monday, expect sunny weather with a crisp, clear sky.

Tomorrow, the highest temperature will be 64.4°F, while the lowest temperature will be 42.8°F.
The maximum temperature will be slightly warmer than the average highest temperature of 56.5°F in October. The lowest temperature will be in line with the average low of 39.9°F.

On Monday, in Rapid Valley, sunrise will be at 7:12 am and sunset at 6:02 pm (MDT).

In Rapid Valley, the length of the day tomorrow will be 10h and 50min.