Mason City, IA — every free forecast we can get, averaged to be a little more right. County seat of Cerro Gordo County.
Updated Friday, November 13, 2026. Recorded fresh this morning from five free sources, and graded later against what the weather actually did.
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High 39° 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) | 39° | 31° | 0% |
| European model (ECMWF) | 39° | 34° | 0% |
| German model (ICON) | 39° | 30° | 0% |
| Canadian model (GEM) | 40° | 25° | 0% |
| The average | 39° | 28° | 0% |
High 39° Low 24° Rain 0%
They agree — trust it (highs spread 3°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 39° | 20° | 0% |
| US model (GFS) | 37° | 30° | 0% |
| European model (ECMWF) | 40° | 27° | 0% |
| German model (ICON) | 38° | 26° | 0% |
| Canadian model (GEM) | 40° | 19° | 0% |
| The average | 39° | 24° | 0% |
High 42° Low 23° Rain 0%
They agree — trust it (highs spread 3°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 42° | 22° | 0% |
| US model (GFS) | 43° | 25° | 0% |
| European model (ECMWF) | 41° | 26° | 0% |
| German model (ICON) | 42° | 26° | 0% |
| Canadian model (GEM) | 40° | 16° | 0% |
| The average | 42° | 23° | 0% |
High 46° Low 25° Rain 0%
They agree — trust it (highs spread 3°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 45° | 25° | 0% |
| US model (GFS) | 47° | 30° | 0% |
| European model (ECMWF) | 46° | 27° | 0% |
| German model (ICON) | 47° | 28° | 0% |
| Canadian model (GEM) | 45° | 14° | 0% |
| The average | 46° | 25° | 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.