Weather forecast for tomorrowWestport, SD

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 66°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 11mphENE 70°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:56 am CDT
  • Sunset: 6:41 pm CDT
  • ▼
Tomorrow, on Monday, October 19, the weather remains calm, bright, and sunny.
Temperature measurements will peak at a comfortable 66.2°F, with a considerable drop to a low of a wintry 39.2°F.
With a forecast of 66.2°F, conditions deviate from October's average and instead resemble September's climate trend.
Sunrise will be at 7:56 am and sunset at 6:41 pm; tomorrow's daylight will last for 10h and 46min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 37°C.

Chance of precipitation

Highest chance: 6 am 3%.

Hourly weather forecast

  • 12 am
  • 45°F
  • Feels like:
    41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNNE 17°
  • Humidity: 60%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 41°F
  • Feels like:
    36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphNNE 18°
  • Humidity: 71%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 37°F
  • Feels like:
    32°F
Mostly Clear
Mostly Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphNNE 28°
  • Humidity: 78%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 37°F
  • Feels like:
    30°F
Mostly Clear
Mostly Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 7mphNNE 33°
  • Humidity: 83%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:56 am
  • 8 am
  • 37°F
  • Feels like:
    32°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 7mphNE 43°
  • Humidity: 82%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 46°F
  • Feels like:
    43°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 8mphNE 52°
  • Humidity: 65%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 57°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphENE 72°
  • Humidity: 42%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 64°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphE 86°
  • Humidity: 34%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphE 94°
  • Humidity: 32%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 63°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphE 91°
  • Humidity: 39%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:41 pm
  • 8 pm
  • 54°F
  • Feels like:
    50°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 8mphE 90°
  • Humidity: 57%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 50°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphESE 107°
  • Humidity: 70%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, primarily dry and sunny and occasionally dull weather is predicted.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 66.2°F. The feels-like temperature variation throughout the day will be substantial, as the lowest temperature will be 30.2°F while the highest temperature will be 66.2°F. The warmest part of the day is anticipated around 4 pm.
The highest temperature is more alike with September's average maximum of 74.3°F than October's usual of 56.3°F. The expected low will be resembling the average minimum in October, which is 40.1°F.
Updated: Oct 18, 2026 @ 13:01:04 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Monday, the outlook remains bright and sunny.

Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 39.2°F.
The highest temperature will be notably higher than the average maximum of 56.3°F in October. The lowest temperature will be in line with the average low of 40.1°F.

On Monday, in Westport, sunrise will be at 7:56 am and sunset at 6:41 pm (CDT).

In Westport, the length of the day tomorrow will be 10h and 46min.