5-day weather forecast for Sioux City, Iowa
Today
45°
71°
Thunderstorms Likely
Saturday
56°
74°
Thunderstorms Likely
Sunday
59°
79°
Chance Thunderstorms
Monday
61°
75°
Thunderstorms Likely
Tuesday
64°
80°
Chance Thunderstorms
Click on a forecast to see the forecast trend for that day
Weather changeability for Sioux City, Iowa
| Temperature | Last Month | Last Year |
|---|---|---|
| Average change in high temperature day-to-day | 9.0° | 7.0° |
| Average change in low temperature day-to-day | 7.2° | 8.3° |
| Precipitation | Last Month | Last Year |
|---|---|---|
| Chance of dry day after a precip day | 100% | 52% |
| Chance of precip day after a dry day | 37% | 21% |
Weather forecast accuracy for Sioux City, Iowa
| The Weather Channel | 74.38% |
| AccuWeather | 72.84% |
| Intellicast | 72.22% |
| National Weather Service | 68.52% |
| Weather Underground | 67.28% |
| NWS Digital Forecast | 63.14% |
| CustomWeather | 58.02% |
| World Weather Online | 54.63% |
| Persistence | 37.75% |
| The Weather Channel | 68.40% |
| Intellicast | 67.65% |
| National Weather Service | 66.71% |
| NWS Digital Forecast | 64.68% |
| AccuWeather | 63.49% |
| CustomWeather | 62.42% |
| Persistence | 44.37% |
ForecastAdvisor Fact
4.5% of Intellicast's high temperature forecasts for Sioux City were off by more than 10 degrees last year.