National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Sioux County Regional Airport (KSXK)

Lat: 42.99°NLon: 96.16°WElev: 1409ft.

Fair

68°F

20°C

Humidity 73%
Wind Speed E 6 mph
Barometer 29.89 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 21 Jun 3:15 pm CDT
Extended Forecast for

Rock Valley IA

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Mostly cloudy, with a high near 70. East wind around 10 mph, with gusts as high as 20 mph.

    High: 70 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers between 9pm and 1am. Mostly cloudy, with a low around 54. East wind 5 to 10 mph becoming light and variable after midnight.

    Low: 54 °F

    Slight Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 77. Northeast wind around 5 mph becoming calm.

    High: 77 °F

    Partly Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 57. Southeast wind around 5 mph becoming calm.

    Low: 57 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. South wind 5 to 15 mph. Chance of precipitation is 70%.

    High: 77 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 57. Southwest wind 5 to 10 mph.

    Low: 57 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Mostly cloudy, with a high near 70. East wind around 10 mph, with gusts as high as 20 mph.
Tonight
A 20 percent chance of showers between 9pm and 1am. Mostly cloudy, with a low around 54. East wind 5 to 10 mph becoming light and variable after midnight.
Monday
Partly sunny, with a high near 77. Northeast wind around 5 mph becoming calm.
Monday Night
Increasing clouds, with a low around 57. Southeast wind around 5 mph becoming calm.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. South wind 5 to 15 mph. Chance of precipitation is 70%.
Tuesday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 57. Southwest wind 5 to 10 mph.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 57.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 76.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 62.
Saturday
Partly sunny, with a high near 83. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rock Valley IA
 43.19°N 96.28°W (Elev. 1289 ft)
Last Update:
1:33 pm CDT Jun 21, 2026
Forecast Valid:
3pm CDT Jun 21, 2026-6pm CDT Jun 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation