Mount Vernon, IN — every free forecast we can get, averaged to be a little more right. County seat of Posey 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 56° Low 36° Rain 15%
Pretty close — fairly safe (highs spread 1°, rain spread 21 points, 3 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 33° | 3% |
| US model (GFS) | 55° | 35° | 19% |
| European model (ECMWF) | 56° | 41° | 24% |
| Canadian model (GEM) | 56° | 36° | 14% |
| The average | 56° | 36° | 15% |
High 45° Low 33° Rain 4%
Pretty close — fairly safe (highs spread 4°, rain spread 15 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 47° | 29° | 15% |
| US model (GFS) | 43° | 33° | 1% |
| European model (ECMWF) | 45° | 37° | 2% |
| Canadian model (GEM) | 45° | 34° | 0% |
| The average | 45° | 33° | 4% |
High 50° Low 29° Rain 0%
They agree — trust it (highs spread 1°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 50° | 27° | 0% |
| US model (GFS) | 50° | 29° | 0% |
| European model (ECMWF) | 50° | 32° | 0% |
| Canadian model (GEM) | 49° | 27° | 0% |
| The average | 50° | 29° | 0% |
High 52° Low 29° Rain 0%
They agree — trust it (highs spread 2°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 52° | 29° | 0% |
| US model (GFS) | 54° | 34° | 0% |
| European model (ECMWF) | 52° | 32° | 0% |
| Canadian model (GEM) | 51° | 21° | 0% |
| The average | 52° | 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.