Chamberlain, SD — every free forecast we can get, averaged to be a little more right. County seat of Brule 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 42° Low 27° Rain 0%
They agree — trust it (highs spread 2°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 22° | 0% |
| US model (GFS) | 41° | 26° | 0% |
| European model (ECMWF) | 43° | 30° | 0% |
| German model (ICON) | 41° | 30° | 0% |
| Canadian model (GEM) | 43° | 26° | 0% |
| The average | 42° | 27° | 0% |
High 45° Low 26° Rain 0%
Pretty close — fairly safe (highs spread 5°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 46° | 27° | 0% |
| US model (GFS) | 41° | 24° | 0% |
| European model (ECMWF) | 45° | 28° | 0% |
| German model (ICON) | 45° | 30° | 0% |
| Canadian model (GEM) | 46° | 23° | 0% |
| The average | 45° | 26° | 0% |
High 49° Low 31° Rain 0%
Pretty close — fairly safe (highs spread 5°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 46° | 33° | 0% |
| US model (GFS) | 51° | 27° | 0% |
| European model (ECMWF) | 48° | 33° | 0% |
| German model (ICON) | 50° | 33° | 0% |
| Canadian model (GEM) | 50° | 30° | 0% |
| The average | 49° | 31° | 0% |
High 57° Low 39° Rain 0%
Pretty close — fairly safe (highs spread 5°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 55° | 38° | 0% |
| US model (GFS) | 56° | 38° | 0% |
| European model (ECMWF) | 58° | 39° | 0% |
| German model (ICON) | 60° | 40° | 0% |
| Canadian model (GEM) | 57° | 39° | 0% |
| The average | 57° | 39° | 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.