Sioux City, IA Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms then Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Sioux City, IA in one place.
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 8am. Mostly cloudy, with a high near 79. South southeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Sioux City, IA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 23, 2026 6:30 PM CDT.
The active forecast window currently covers Aug 24 to Aug 29, 2026 for Sioux City, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 24 to Aug 29, 2026
- Latest sync
- Aug 23, 2026 6:30 PM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Sioux City
Tuesday looks like the warmest upcoming period in Sioux City at 84 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 58 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 15 mph NW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 23, 2026 6:30 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- FSD
- Radar station
- KFSD
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 65. South southeast wind 5 to 10 mph.
A slight chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 84. South southwest wind around 5 mph. Chance of precipitation is 20%.
Mostly clear, with a low around 63. West wind around 5 mph.
Sunny, with a high near 82.
Mostly clear, with a low around 58.
Sunny, with a high near 82.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 60. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83. Chance of precipitation is 50%.
A chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
79°F |
5 to 10 mph
SSE
|
|
Monday Night
Aug 24
|
Partly Cloudy
|
65°F |
5 to 10 mph
SSE
|
|
Tuesday
Aug 25
|
Slight Chance Showers And Thunderstorms
|
84°F |
5 mph
SSW
|
|
Tuesday Night
Aug 25
|
Mostly Clear
|
63°F |
5 mph
W
|
|
Wednesday
Aug 26
|
Sunny
|
82°F |
5 to 15 mph
NW
|
|
Wednesday Night
Aug 26
|
Mostly Clear
|
58°F |
0 to 10 mph
NNW
|
|
Thursday
Aug 27
|
Sunny
|
82°F |
0 to 5 mph
WNW
|
|
Thursday Night
Aug 27
|
Partly Cloudy then Chance Showers And Thunderstorms
|
60°F |
0 to 5 mph
S
|
|
Friday
Aug 28
|
Chance Showers And Thunderstorms
|
81°F |
0 to 10 mph
SSE
|
|
Friday Night
Aug 28
|
Showers And Thunderstorms Likely
|
64°F |
10 mph
SE
|
|
Saturday
Aug 29
|
Chance Showers And Thunderstorms
|
83°F |
5 to 10 mph
SE
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms
|
65°F |
5 to 10 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sioux City.
