Weather forecast for 10 daysFort Thompson, SD
Weather forecast for the weekend
Sunday Oct 18, 2026
- 72°F
- 41°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 12mphNNE 31°
- Humidity: 48%
- UV index: 3
- Sunrise: 7:56 am CDT
- Sunset: 6:49 pm CDT
- details ▼
On Sunday, October 18, sunshine will likely continue with scattered clouds at most.
Dramatic changes in temperature are anticipated, reaching a high of a pleasant 71.6°F and falling to a low of an icy 41°F.
The temperature of 71.6°F aligns more with what is typical in September than what is normal in October.
Sunrise was at 7:56 am and sunset will be at 6:49 pm; the daylight will last for 10h and 53min.
Dramatic changes in temperature are anticipated, reaching a high of a pleasant 71.6°F and falling to a low of an icy 41°F.
The temperature of 71.6°F aligns more with what is typical in September than what is normal in October.
Sunrise was at 7:56 am and sunset will be at 6:49 pm; the daylight will last for 10h and 53min.
10-day overview
Daily temperatures
Warmest day: Friday 79°C.
Coldest day: Sunday 25.10. 59°C.
Coldest day: Sunday 25.10. 59°C.
Chance of precipitation
Highest chance: 24%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 72°F
- 41°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 12mphNNE 31°
- Humidity: 48%
- UV index: 3
- Sunrise: 7:56 am CDT
- Sunset: 6:49 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 68°F
- 43°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 11mphE 88°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:57 am CDT
- Sunset: 6:47 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 72°F
- 46°F
Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 14mphSSE 153°
- Humidity: 67%
- UV index: 3
- Sunrise: 7:59 am CDT
- Sunset: 6:45 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 72°F
- 45°F
Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 7mphNNE 14°
- Humidity: 71%
- UV index: 3
- Sunrise: 8:00 am CDT
- Sunset: 6:44 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 77°F
- 59°F
Partly Cloudy
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 14mphSE 138°
- Humidity: 70%
- UV index: 3
- Sunrise: 8:01 am CDT
- Sunset: 6:42 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 79°F
- 55°F
Partly Cloudy / Wind
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 21mphSSE 156°
- Humidity: 62%
- UV index: 3
- Sunrise: 8:02 am CDT
- Sunset: 6:41 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 63°F
- 41°F
Mostly Sunny
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 15mphWNW 295°
- Humidity: 62%
- UV index: 3
- Sunrise: 8:04 am CDT
- Sunset: 6:39 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 59°F
- 45°F
Mostly Sunny
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 10mphESE 108°
- Humidity: 66%
- UV index: 3
- Sunrise: 8:05 am CDT
- Sunset: 6:38 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 64°F
- 50°F
Mostly Cloudy
- Precip. probability: 16%
- Precipitation: 0"
- Wind: 13mphSE 134°
- Humidity: 73%
- UV index: 3
- Sunrise: 8:06 am CDT
- Sunset: 6:36 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 63°F
- 46°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 14mphSSE 148°
- Humidity: 68%
- UV index: 3
- Sunrise: 8:08 am CDT
- Sunset: 6:35 pm CDT
- details ▼
For the coming ten days, a combination of sunny and cloudy weather is expected.
Rainfall is not forecasted in Fort Thompson in the upcoming period.
The temperature will vary considerably over the next several days. The temperature is expected to swing from 59°F up to 78.8°F, while there will be also a marked difference in overnight low temperatures, as the minimum temperature is expected to range between 41°F and 59°F.
With the highest temperature of 78.8°F, Friday will be the warmest day; expect the coldest day on next Sunday with a high of 59°F.
Rainfall is not forecasted in Fort Thompson in the upcoming period.
The temperature will vary considerably over the next several days. The temperature is expected to swing from 59°F up to 78.8°F, while there will be also a marked difference in overnight low temperatures, as the minimum temperature is expected to range between 41°F and 59°F.
With the highest temperature of 78.8°F, Friday will be the warmest day; expect the coldest day on next Sunday with a high of 59°F.
Updated: Oct 18, 2026 @ 13:33:48 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 Fort Thompson, sunny skies and pleasant visibility are expected.
Today, the highest temperature will be 71.6°F, while the lowest temperature will be 41°F.
Today, the maximum temperature will be noticeably higher than the average highest temperature of 58.6°F in October. Today, the lowest temperature will be in line with the average low temperature.
Today, the maximum temperature will be noticeably higher than the average highest temperature of 58.6°F in October. Today, the lowest temperature will be in line with the average low temperature.
On Sunday, in Fort Thompson, sunrise was at 7:56 am and sunset will be at 6:49 pm (CDT).
Today, the daylight will last for 10h and 53min.
