Weather forecast for tomorrowMellette, SD

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 68°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 10mphENE 75°
  • Humidity: 52%
  • UV index: 3
  • Sunrise: 7:55 am CDT
  • Sunset: 6:42 pm CDT
  • ▼
On Monday, in Mellette, sunshine will likely continue with scattered clouds at most.
Significant variations in temperature are forecasted, peaking at a pleasant 68°F and dropping to a low of a cold 41°F.
Expect a warmer feel as the forecasted high matches September's 74.3°F, rather than October's average of 56.3°F.
Sunrise will be at 7:55 am and sunset at 6:42 pm; tomorrow's daylight will last for 10h and 47min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 68°C.
Coldest hour: 6 am 37°C.

Chance of precipitation

Highest chance: 6 am 3%.

Hourly weather forecast

  • 12 am
  • 46°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphNNE 26°
  • Humidity: 59%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 43°F
  • Feels like:
    37°F
Mostly Clear
Mostly Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 8mphNNE 28°
  • Humidity: 68%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 39°F
  • Feels like:
    34°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphNNE 29°
  • Humidity: 74%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 37°F
  • Feels like:
    32°F
Mostly Clear
Mostly Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 7mphNNE 32°
  • Humidity: 80%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:55 am
  • 8 am
  • 39°F
  • Feels like:
    34°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 7mphNE 38°
  • Humidity: 79%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 48°F
  • Feels like:
    46°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphNE 51°
  • Humidity: 63%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 59°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphENE 73°
  • Humidity: 43%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphE 95°
  • Humidity: 37%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphESE 107°
  • Humidity: 36%
  • 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: 9mphESE 105°
  • Humidity: 43%
  • 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: 7mphE 97°
  • Humidity: 60%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 50°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphESE 114°
  • Humidity: 70%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Monday, mostly cloudless and sunny weather is anticipated.
The temperature will be between a minimum of 37.4°F and a maximum of 68°F. The warmest part of the day will be at 3 pm and 4 pm.
The forecasted maximum is more similar to September's typical high of 74.3°F than the average for October. The night temperature will be comparable to the standard October low of 40.1°F.
Updated: Oct 18, 2026 @ 09:46:08 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Monday, in Mellette, clear and sunny conditions are expected.

Tomorrow, the highest temperature will be 68°F, while the lowest temperature will be 41°F.
The maximum temperature will be significantly higher than the average highest temperature of 56.3°F in October. The lowest temperature will be in line with the average low of 40.1°F.

On Monday, in Mellette, sunrise will be at 7:55 am and sunset at 6:42 pm (CDT).

Tomorrow, the daylight will last for 10h and 47min.