Marion, IL — every free forecast we can get, averaged to be a little more right. County seat of Williamson 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 6%
They agree — trust it (highs spread 0°, rain spread 11 points, 3 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 32° | 1% |
| US model (GFS) | 56° | 37° | 2% |
| European model (ECMWF) | 56° | 40° | 12% |
| Canadian model (GEM) | 56° | 36° | 10% |
| The average | 56° | 36° | 6% |
High 46° Low 32° Rain 0%
Pretty close — fairly safe (highs spread 3°, rain spread 2 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 48° | 27° | 2% |
| US model (GFS) | 45° | 33° | 0% |
| European model (ECMWF) | 46° | 37° | 0% |
| Canadian model (GEM) | 46° | 31° | 0% |
| The average | 46° | 32° | 0% |
High 49° Low 27° Rain 0%
They agree — trust it (highs spread 2°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 50° | 26° | 0% |
| US model (GFS) | 50° | 25° | 0% |
| European model (ECMWF) | 49° | 32° | 0% |
| Canadian model (GEM) | 48° | 24° | 0% |
| The average | 49° | 27° | 0% |
High 53° Low 28° Rain 0%
They agree — trust it (highs spread 3°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 53° | 29° | 0% |
| US model (GFS) | 54° | 33° | 0% |
| European model (ECMWF) | 53° | 32° | 0% |
| Canadian model (GEM) | 52° | 20° | 0% |
| The average | 53° | 28° | 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.