Chester, IL — every free forecast we can get, averaged to be a little more right. County seat of Randolph 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 55° Low 36° Rain 4%
They agree — trust it (highs spread 1°, rain spread 10 points, 3 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 31° | 0% |
| US model (GFS) | 56° | 37° | 0% |
| European model (ECMWF) | 54° | 40° | 4% |
| Canadian model (GEM) | 56° | 35° | 10% |
| The average | 55° | 36° | 4% |
High 44° Low 30° Rain 0%
Pretty close — fairly safe (highs spread 4°, rain spread 1 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 46° | 25° | 1% |
| US model (GFS) | 44° | 32° | 0% |
| European model (ECMWF) | 42° | 35° | 0% |
| Canadian model (GEM) | 44° | 29° | 0% |
| The average | 44° | 30° | 0% |
High 48° Low 27° Rain 0%
They agree — trust it (highs spread 2°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 49° | 25° | 0% |
| US model (GFS) | 49° | 29° | 0% |
| European model (ECMWF) | 47° | 30° | 0% |
| Canadian model (GEM) | 47° | 22° | 0% |
| The average | 48° | 27° | 0% |
High 52° Low 27° Rain 0%
Pretty close — fairly safe (highs spread 4°, rain spread 1 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 52° | 28° | 1% |
| US model (GFS) | 54° | 32° | 0% |
| European model (ECMWF) | 51° | 30° | 0% |
| Canadian model (GEM) | 50° | 19° | 0% |
| The average | 52° | 27° | 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.