Weather forecast for tomorrowRiver Sioux, IA
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 68°F
- 41°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 18mphS 183°
- Humidity: 52%
- UV index: 4
- Sunrise: 7:40 am CDT
- Sunset: 6:38 pm CDT
- details ▼
Tomorrow, in River Sioux, sunny skies and pleasant visibility are also expected.
The day will see a remarkable high of a pleasant 68°F, sharply contrasting with a low of a cold 41°F.
Forecasts suggest the maximum temperature will be slightly warmer than October's average of 61°F.
Sunrise will be at 7:40 am and sunset at 6:38 pm; tomorrow's daylight will last for 10h and 58min.
The day will see a remarkable high of a pleasant 68°F, sharply contrasting with a low of a cold 41°F.
Forecasts suggest the maximum temperature will be slightly warmer than October's average of 61°F.
Sunrise will be at 7:40 am and sunset at 6:38 pm; tomorrow's daylight will last for 10h and 58min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 66°C.
Coldest hour: 6 am 41°C.
Coldest hour: 6 am 41°C.
Chance of precipitation
Highest chance: 6 am - 9 am 3%.
Hourly weather forecast
- 12 am
- 45°F
- Feels like:39°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 12mphS 183°
- Humidity: 65%
- Pressure: 30.24"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 45°F
- Feels like:37°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 13mphS 181°
- Humidity: 69%
- Pressure: 30.24"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 43°F
- Feels like:36°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 13mphS 181°
- Humidity: 74%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 41°F
- Feels like:34°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 13mphS 179°
- Humidity: 78%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:40 am
- 8 am
- 41°F
- Feels like:34°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 12mphS 175°
- Humidity: 81%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 52°F
- Feels like:46°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 16mphS 185°
- Humidity: 62%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 61°F
- Feels like:57°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 17mphS 188°
- Humidity: 46%
- Pressure: 30.18"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 2 pm
- 66°F
- Feels like:66°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 17mphS 185°
- Humidity: 39%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 68°F
- Feels like:68°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 18mphS 184°
- Humidity: 36%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 6 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 14mphS 175°
- Humidity: 36%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:38 pm
- 8 pm
- 57°F
- Feels like:54°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 10mphSSE 167°
- Humidity: 52%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 52°F
- Feels like:48°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 9mphS 174°
- Humidity: 63%
- Pressure: 30.18"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, primarily bright and sunny weather is anticipated.
The temperature will vary between a minimum of 41°F and a maximum of 68°F. The feels-like temperature will vary between the lowest temperature of 33.8°F and the highest temperature of 68°F. The warmest part of the day will be around 4 pm.
The maximum temperature tomorrow will be a couple of degrees higher than October's average high. The nighttime low tomorrow will be also close to October's typical minimum temperature.
The temperature will vary between a minimum of 41°F and a maximum of 68°F. The feels-like temperature will vary between the lowest temperature of 33.8°F and the highest temperature of 68°F. The warmest part of the day will be around 4 pm.
The maximum temperature tomorrow will be a couple of degrees higher than October's average high. The nighttime low tomorrow will be also close to October's typical minimum temperature.
Updated: Oct 18, 2026 @ 02:46:09 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, in River Sioux, sunshine and minimal clouds are in the outlook.
Tomorrow, the maximum temperature will be 68°F, while the minimum temperature will be 41°F.
The maximum temperature tomorrow will be moderately higher than the average highest temperature in October. The lowest temperature tomorrow will be in line with the average low temperature.
The maximum temperature tomorrow will be moderately higher than the average highest temperature in October. The lowest temperature tomorrow 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).
In River Sioux, the length of the day tomorrow will be 10h and 58min.
