Sioux City, IA — every free forecast we can get, averaged to be a little more right. County seat of Woodbury County.
Updated Friday, November 13, 2026. Recorded fresh this morning from five free sources, and graded later against what the weather actually did.
← All cities and the scoreboard
High 43° Low 28° Rain 0%
They agree — trust it (highs spread 1°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 22° | 0% |
| US model (GFS) | 43° | 30° | 0% |
| European model (ECMWF) | 43° | 33° | 0% |
| German model (ICON) | 43° | 30° | 0% |
| Canadian model (GEM) | 44° | 27° | 0% |
| The average | 43° | 28° | 0% |
High 41° Low 24° Rain 0%
They disagree — a coin flip (highs spread 6°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 43° | 21° | 0% |
| US model (GFS) | 37° | 30° | 0% |
| European model (ECMWF) | 42° | 27° | 0% |
| German model (ICON) | 41° | 25° | 0% |
| Canadian model (GEM) | 43° | 20° | 0% |
| The average | 41° | 24° | 0% |
High 43° Low 25° Rain 0%
Pretty close — fairly safe (highs spread 5°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 43° | 27° | 0% |
| US model (GFS) | 45° | 28° | 0% |
| European model (ECMWF) | 44° | 27° | 0% |
| German model (ICON) | 44° | 27° | 0% |
| Canadian model (GEM) | 41° | 17° | 0% |
| The average | 43° | 25° | 0% |
High 47° Low 29° Rain 0%
They disagree — a coin flip (highs spread 9°, rain spread 1 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 46° | 30° | 1% |
| US model (GFS) | 48° | 34° | 0% |
| European model (ECMWF) | 48° | 29° | 0% |
| German model (ICON) | 52° | 34° | 0% |
| Canadian model (GEM) | 43° | 16° | 0% |
| The average | 47° | 29° | 0% |
Scoring has started — every forecast is being recorded. The first grades land once the historical record publishes what actually happened (it runs a few days behind), and this board fills in from there.