Hazardous Weather Conditions
Current conditions at
Sioux City, Sioux Gateway Airport (KSUX)
Lat: 42.4°NLon: 96.38°WElev: 1099ft.
Mostly Cloudy and Breezy
85°F
29°C
| Humidity | 51% |
| Wind Speed | S 22 G 38 mph |
| Barometer | 29.49 in (997.6 mb) |
| Dewpoint | 65°F (18°C) |
| Visibility | 10.00 mi |
| Heat Index | 87°F (31°C) |
| Last update | 17 May 4:52 pm CDT |
Extended Forecast for
Sioux City IA
Tornado Watch May 17, 05:13pm until May 17, 10:00pm
NOW until 10:00pm Sun

Tornado Watch
This Afternoon

High: 84 °F
Severe
ThunderstormsTonight
Low: 49 °F
Severe
Thunderstorms
then Chance
T-stormsMonday
High: 63 °F
Chance
Showers then
Showers
LikelyMonday Night

Low: 41 °F
Showers
Tuesday

High: 59 °F
Decreasing
CloudsTuesday Night

Low: 36 °F
Mostly Clear
Wednesday

High: 64 °F
Mostly Sunny
Wednesday Night

Low: 41 °F
Mostly Cloudy
Detailed Forecast
This Afternoon
A 40 percent chance of showers and thunderstorms. Some of the storms could be severe. Mostly sunny, with a steady temperature around 84. South wind around 15 mph, with gusts as high as 30 mph.
Tonight
Showers and thunderstorms before 4am, then a slight chance of showers. Some of the storms could be severe. Low around 49. South wind around 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
A slight chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 5pm, then showers likely and possibly a thunderstorm after 5pm. Cloudy, with a high near 63. North northeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 41. North northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 59. Northwest wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 36. North northwest wind 5 to 10 mph becoming light north northeast in the evening. Winds could gust as high as 20 mph.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Mostly cloudy, with a low around 41.
Thursday
Mostly cloudy, with a high near 66.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 44.
Friday
Partly sunny, with a high near 71.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 49.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 86.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Sioux City IA
42.5°N 96.39°W (Elev. 1099 ft)
42.5°N 96.39°W (Elev. 1099 ft)
1:56 pm CDT May 17, 2026
5pm CDT May 17, 2026-6pm CDT May 24, 2026



