Weather Alert
Sioux City Weather Warning NWS WEATHER ALERT FOR THE SIOUX CITY, IA AREA - Issued: 1113 AM CDT Wed Sep 2 2026 Sioux City Weather Warning

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Sioux City, IA Weather Forecast

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Sioux City, IA Weather Forecast

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Sioux City IA weather - Clear - 90°F
Clear
90°F
Updated 4:01 pm
Feels Like 106°F
Humidity 55%
Wind SSW 12 mph
Barometer  29.82 in
Dew Point 72°F
Sioux City IA weather - Clear - 32°C
Clear
32°C
Updated 4:01 pm
Feels Like 41°C
Humidity 55%
Wind SSW 19 km/h
Barometer  100.9 kPa
Dew Point 22°C
WX Settings

Sioux City Weather Forecast

TONIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT LABOR DAY MONDAY NIGHT TUESDAY
Sioux City, IA Weather - Tonight Chance Of T-Storm Sioux City, IA Weather - Thursday Chance Of T-Storm Sioux City, IA Weather - Thursday Night Mostly Clear Sioux City, IA Weather - Friday Sunny Sioux City, IA Weather - Friday Night Chance Of T-Storm Sioux City, IA Weather - Saturday Mostly Sunny Sioux City, IA Weather - Saturday Night Partly Cloudy Sioux City, IA Weather - Sunday Mostly Sunny Sioux City, IA Weather - Sunday Night Chance Of T-Storm Sioux City, IA Weather - Labor Day Chance Of Showers Sioux City, IA Weather - Monday Night Chance Of T-Storm Sioux City, IA Weather - Tuesday Chance Of Showers
Chance of T-Storm Chance of T-Storm Mostly Clear Sunny Chance of T-Storm Mostly Sunny Partly Cloudy Mostly Sunny Chance of T-Storm Chance of Showers Chance of T-Storm Chance of Showers
Lo: 70°FLo: 21°C Hi: 90°FHi: 32°C
 Lo: 71°FLo: 22°C Hi: 91°FHi: 33°C
 Lo: 71°FLo: 22°C Hi: 91°FHi: 33°C
 Lo: 70°FLo: 21°C Hi: 89°FHi: 32°C
 Lo: 69°FLo: 21°C Hi: 89°FHi: 32°C
 Lo: 69°FLo: 21°C Hi: 85°FHi: 29°C
POP: 40% POP: 30% POP: 20% POP: 40% POP: 40% POP: 40% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 238 PM CDT Wed Sep 02 2026 Sioux City, IA Weather - WeatherWorld.com

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Issued: 132 PM CDT Wed Sep 2 2026

Key Messages

  • Isolated to scattered thunderstorms possible after midnight. A couple stronger storms with ping pong ball size hail and 50 mph winds are possible into mid-morning Thursday.
  • Hot and humid conditions will persist into the upcoming weekend, with heat index values rising near 100 degrees at times.
  • Heat and humidity may lead to additional storm risks, Thursday evening and again Friday evening, though considerable uncertainty remains on development and coverage.

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... Issued at 127 ...