Weather forecast for 10 daysMellette, SD
Weather forecast for the weekend
Sunday Oct 18, 2026
- 70°F
- 37°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 11mphENE 75°
- Humidity: 52%
- UV index: 3
- Sunrise: 7:54 am CDT
- Sunset: 6:43 pm CDT
- details ▼
On Sunday, in Mellette, variable cloud cover will persist, but sunshine will break through.
Temperatures will see a substantial oscillation, reaching a high of an agreeable 69.8°F and dropping to a low of a wintry 37.4°F.
Today, the expected high will be higher and much closer to September's average high of 74.3°F than October's 56.3°F.
Sunrise will be at 7:54 am and sunset at 6:43 pm; the daylight will last for 10h and 50min.
Temperatures will see a substantial oscillation, reaching a high of an agreeable 69.8°F and dropping to a low of a wintry 37.4°F.
Today, the expected high will be higher and much closer to September's average high of 74.3°F than October's 56.3°F.
Sunrise will be at 7:54 am and sunset at 6:43 pm; the daylight will last for 10h and 50min.
10-day overview
Daily temperatures
Warmest day: Friday 77°C.
Coldest day: Sunday 25.10. 57°C.
Coldest day: Sunday 25.10. 57°C.
Chance of precipitation
Highest chance: Saturday 42%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 70°F
- 37°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 11mphENE 75°
- Humidity: 52%
- UV index: 3
- Sunrise: 7:54 am CDT
- Sunset: 6:43 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 68°F
- 41°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 10mphENE 73°
- Humidity: 52%
- UV index: 3
- Sunrise: 7:55 am CDT
- Sunset: 6:42 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 70°F
- 45°F
Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 16mphSSE 164°
- Humidity: 66%
- UV index: 3
- Sunrise: 7:56 am CDT
- Sunset: 6:40 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 70°F
- 41°F
Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 7mphNE 40°
- Humidity: 70%
- UV index: 3
- Sunrise: 7:58 am CDT
- Sunset: 6:38 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 73°F
- 57°F
Mostly Sunny
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 12mphSSE 148°
- Humidity: 70%
- UV index: 3
- Sunrise: 7:59 am CDT
- Sunset: 6:37 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 77°F
- 59°F
Mostly Cloudy / Wind
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 22mphSSE 162°
- Humidity: 66%
- UV index: 2
- Sunrise: 8:00 am CDT
- Sunset: 6:35 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 64°F
- 39°F
Showers
- Precip. probability: 42%
- Precipitation: 0.04"
- Wind: 15mphWSW 258°
- Humidity: 63%
- UV index: 2
- Sunrise: 8:02 am CDT
- Sunset: 6:34 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 57°F
- 43°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0.16"
- Wind: 10mphN 350°
- Humidity: 64%
- UV index: 3
- Sunrise: 8:03 am CDT
- Sunset: 6:32 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 59°F
- 45°F
Partly Cloudy
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 12mphSE 127°
- Humidity: 70%
- UV index: 3
- Sunrise: 8:04 am CDT
- Sunset: 6:30 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 61°F
- 45°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 14mphSSE 149°
- Humidity: 71%
- UV index: 2
- Sunrise: 8:06 am CDT
- Sunset: 6:29 pm CDT
- details ▼
During the ten-day period, cloudy, sun-filled and showery weather is anticipated.
Rain is forecasted for Saturday and next Sunday.
Expect a substantial fluctuation in daytime highs in the coming days. The maximum temperature will vary between 57.2°F and 77°F, while the lowest nightly temperature differences will be also quite pronounced, as temperatures overnight will fluctuate from 37.4°F up to 59°F.
The warmest day will be Friday, with a maximum of 77°F; the lowest daytime temperature of the period will be reached on next Sunday, peaking at 57.2°F.
Rain is forecasted for Saturday and next Sunday.
Expect a substantial fluctuation in daytime highs in the coming days. The maximum temperature will vary between 57.2°F and 77°F, while the lowest nightly temperature differences will be also quite pronounced, as temperatures overnight will fluctuate from 37.4°F up to 59°F.
The warmest day will be Friday, with a maximum of 77°F; the lowest daytime temperature of the period will be reached on next Sunday, peaking at 57.2°F.
Updated: Oct 18, 2026 @ 05:28:05 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Today, in Mellette, intermittent cloud cover is expected, allowing for some sunshine.
Today, the maximum temperature will be 69.8°F, while the minimum temperature will be 37.4°F.
The highest temperature will be notably higher than the average maximum of 56.3°F in October. The lowest temperature today will be in line with the average low temperature.
The highest temperature will be notably higher than the average maximum of 56.3°F in October. The lowest temperature today will be in line with the average low temperature.
On Sunday, in Mellette, sunrise will be at 7:54 am and sunset at 6:43 pm (CDT).
Today, the daylight will last for 10h and 50min.
