Sisseton, SD — every free forecast we can get, averaged to be a little more right. County seat of Roberts 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 38° Low 27° Rain 0%
They agree — trust it (highs spread 1°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 21° | 0% |
| US model (GFS) | 38° | 30° | 0% |
| European model (ECMWF) | 39° | 28° | 0% |
| German model (ICON) | 38° | 31° | 0% |
| Canadian model (GEM) | 39° | 24° | 0% |
| The average | 38° | 27° | 0% |
High 37° Low 24° Rain 0%
Pretty close — fairly safe (highs spread 3°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 37° | 20° | 0% |
| US model (GFS) | 35° | 30° | 0% |
| European model (ECMWF) | 38° | 26° | 0% |
| German model (ICON) | 37° | 27° | 0% |
| Canadian model (GEM) | 38° | 19° | 0% |
| The average | 37° | 24° | 0% |
High 43° Low 25° Rain 0%
Pretty close — fairly safe (highs spread 6°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 40° | 26° | 0% |
| US model (GFS) | 46° | 29° | 0% |
| European model (ECMWF) | 43° | 27° | 0% |
| German model (ICON) | 43° | 26° | 0% |
| Canadian model (GEM) | 42° | 16° | 0% |
| The average | 43° | 25° | 0% |
High 53° Low 32° Rain 0%
They disagree — a coin flip (highs spread 7°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 49° | 36° | 0% |
| US model (GFS) | 54° | 34° | 0% |
| European model (ECMWF) | 54° | 33° | 0% |
| German model (ICON) | 56° | 36° | 0% |
| Canadian model (GEM) | 51° | 23° | 0% |
| The average | 53° | 32° | 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.