Weather forecast for tomorrowLetcher, SD

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 68°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 10mphE 93°
  • Humidity: 57%
  • UV index: 3
  • Sunrise: 7:52 am CDT
  • Sunset: 6:42 pm CDT
  • ▼
Tomorrow, on Monday, conditions will remain bright with clear skies.
A wide temperature range is predicted, from a high of a delightful 68°F to a low of an icy 41°F.
The expected high of 68°F appears seasonally off, better matching September's typical values.
Sunrise will be at 7:52 am and sunset at 6:42 pm; tomorrow's daylight will last for 10h and 50min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 66°C.
Coldest hour: 6 am 41°C.

Chance of precipitation

Highest chance: 3 am - 6 am 5%.

Hourly weather forecast

  • 12 am
  • 48°F
  • Feels like:
    45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 6mphNE 39°
  • Humidity: 73%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 45°F
  • Feels like:
    41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 6mphNE 35°
  • Humidity: 81%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 41°F
  • Feels like:
    37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphNNE 30°
  • Humidity: 87%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 41°F
  • Feels like:
    36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphNNE 33°
  • Humidity: 88%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:52 am
  • 8 am
  • 41°F
  • Feels like:
    36°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphNE 40°
  • Humidity: 87%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 48°F
  • Feels like:
    46°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphENE 72°
  • Humidity: 70%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 59°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphE 94°
  • Humidity: 51%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 64°F
  • Feels like:
    64°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphESE 108°
  • Humidity: 42%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphSE 126°
  • Humidity: 39%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 64°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphSE 125°
  • Humidity: 46%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:42 pm
  • 8 pm
  • 55°F
  • Feels like:
    54°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphSE 126°
  • Humidity: 60%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 52°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 7mphSE 132°
  • Humidity: 74%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Monday, primarily dry and sunny and occasionally gloomy weather is anticipated.
The temperature will be between a minimum of 39.2°F and a maximum of 66.2°F. The warmest part of the day will be from 3 pm to 5 pm.
The temperature will feel more consistent with September's average high than the expected maximum for October. The expected low will be resembling the average minimum in October, which is 42.1°F.
Updated: Oct 18, 2026 @ 15:48:23 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 68°F, while the lowest temperature will be 41°F.
The maximum temperature will be uncommonly higher than the average highest temperature of 58.5°F in October. The lowest temperature will be in line with the average low of 42.1°F.

On Monday, in Letcher, sunrise will be at 7:52 am and sunset at 6:42 pm (CDT).

Tomorrow, the daylight will last for 10h and 50min.