Weather forecast for 10 daysRiver Sioux, IA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 70°F
- 41°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 18mphS 182°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:40 am CDT
- Sunset: 6:38 pm CDT
- details ▼
On Sunday, October 18, the weather remains calm, bright, and sunny.
The peak daytime temperature will touch a delightful 69.8°F, while the nighttime temperature will descend to a cold 41°F.
A high of 69.8°F is expected, which resembles September's climate average of 76.5°F more than October's 61°F.
Sunrise will be at 7:40 am and sunset at 6:38 pm; the daylight will last for 10h and 58min.
The peak daytime temperature will touch a delightful 69.8°F, while the nighttime temperature will descend to a cold 41°F.
A high of 69.8°F is expected, which resembles September's climate average of 76.5°F more than October's 61°F.
Sunrise will be at 7:40 am and sunset at 6:38 pm; the daylight will last for 10h and 58min.
10-day overview
Daily temperatures
Warmest period: Thursday - Friday 79°C.
Minimum temperature: 68°C.
Minimum temperature: 68°C.
Chance of precipitation
Highest chance: Monday 26.10. 24%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 70°F
- 41°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 18mphS 182°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:40 am CDT
- Sunset: 6:38 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 68°F
- 43°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 11mphSSE 162°
- Humidity: 61%
- UV index: 4
- Sunrise: 7:41 am CDT
- Sunset: 6:36 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 72°F
- 50°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 12mphSSE 162°
- Humidity: 57%
- UV index: 4
- Sunrise: 7:42 am CDT
- Sunset: 6:35 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 75°F
- 50°F
Mostly Sunny
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 9mphS 183°
- Humidity: 63%
- UV index: 4
- Sunrise: 7:43 am CDT
- Sunset: 6:33 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 79°F
- 55°F
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 11mphSSE 160°
- Humidity: 66%
- UV index: 4
- Sunrise: 7:44 am CDT
- Sunset: 6:32 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 79°F
- 59°F
Mostly Cloudy
- Precip. probability: 14%
- Precipitation: 0"
- Wind: 19mphSSE 161°
- Humidity: 50%
- UV index: 3
- Sunrise: 7:46 am CDT
- Sunset: 6:30 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 77°F
- 52°F
Mostly Cloudy
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 16mphS 186°
- Humidity: 48%
- UV index: 3
- Sunrise: 7:47 am CDT
- Sunset: 6:29 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 70°F
- 50°F
Mostly Sunny
- Precip. probability: 21%
- Precipitation: 0"
- Wind: 9mphNW 306°
- Humidity: 63%
- UV index: 3
- Sunrise: 7:48 am CDT
- Sunset: 6:28 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 68°F
- 52°F
Mostly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 11mphSE 145°
- Humidity: 68%
- UV index: 2
- Sunrise: 7:49 am CDT
- Sunset: 6:26 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 70°F
- 50°F
Mostly Cloudy
- Precip. probability: 22%
- Precipitation: 0.12"
- Wind: 14mphSSE 161°
- Humidity: 62%
- UV index: 3
- Sunrise: 7:50 am CDT
- Sunset: 6:25 pm CDT
- details ▼
It is expected that a combination of sunny and cloud-filled weather is predicted.
With a probability of 22%, rainfall is expected only on next Tuesday. The precipitation will be minimal at 0.12".
In the upcoming period, the maximum temperature will vary between 68°F and 78.8°F, while the variation in nighttime lows will be notably wide, as the minimum temperature is expected to range between 41°F and 59°F.
Thursday and Friday, with the highest temperature of 78.8°F, will be the warmest days in River Sioux; the coldest days will be Monday and next Monday, with a maximum of 68°F.
With a probability of 22%, rainfall is expected only on next Tuesday. The precipitation will be minimal at 0.12".
In the upcoming period, the maximum temperature will vary between 68°F and 78.8°F, while the variation in nighttime lows will be notably wide, as the minimum temperature is expected to range between 41°F and 59°F.
Thursday and Friday, with the highest temperature of 78.8°F, will be the warmest days in River Sioux; the coldest days will be Monday and next Monday, with a maximum of 68°F.
Updated: Oct 18, 2026 @ 09:58:02 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
On Sunday, sun-filled conditions are expected to persist.
Today, the maximum temperature will be 69.8°F, while the minimum temperature will be 41°F.
The highest temperature today will be moderately higher than the average maximum temperature in October. Today, the lowest temperature will be in line with the average low temperature.
The highest temperature today will be moderately higher than the average maximum temperature in October. Today, the lowest temperature will be in line with the average low temperature.
On Sunday, in River Sioux, sunrise will be at 7:40 am and sunset at 6:38 pm (CDT).
Today, the daylight will last for 10h and 58min.
