Tiffin, OH — every free forecast we can get, averaged to be a little more right. County seat of Seneca 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 49° Low 40° Rain 97%
They agree — trust it (highs spread 1°, rain spread 9 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 36° | 93% |
| US model (GFS) | 49° | 40° | 91% |
| European model (ECMWF) | 50° | 42° | 100% |
| German model (ICON) | 49° | 41° | 100% |
| Canadian model (GEM) | 49° | 42° | 100% |
| The average | 49° | 40° | 97% |
High 41° Low 33° Rain 64%
They disagree — a coin flip (highs spread 2°, rain spread 52 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 40° | 29° | 58% |
| US model (GFS) | 40° | 33° | 39% |
| European model (ECMWF) | 42° | 36° | 78% |
| German model (ICON) | 41° | 33° | 53% |
| Canadian model (GEM) | 42° | 33° | 91% |
| The average | 41° | 33° | 64% |
High 43° Low 30° Rain 8%
Pretty close — fairly safe (highs spread 6°, rain spread 29 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 43° | 33° | 8% |
| US model (GFS) | 43° | 32° | 2% |
| European model (ECMWF) | 44° | 29° | 2% |
| German model (ICON) | 44° | 29° | 0% |
| Canadian model (GEM) | 38° | 26° | 29% |
| The average | 43° | 30° | 8% |
High 45° Low 34° Rain 0%
They disagree — a coin flip (highs spread 6°, rain spread 1 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 46° | 30° | 1% |
| US model (GFS) | 46° | 39° | 0% |
| European model (ECMWF) | 43° | 37° | 1% |
| German model (ICON) | 47° | 38° | 0% |
| Canadian model (GEM) | 41° | 27° | 0% |
| The average | 45° | 34° | 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.