Lewistown, MT — every free forecast we can get, averaged to be a little more right. County seat of Fergus 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 69° Low 46° Rain 0%
They agree — trust it (highs spread 3°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 40° | 0% |
| US model (GFS) | 71° | 46° | 0% |
| European model (ECMWF) | 70° | 46° | 0% |
| German model (ICON) | 69° | 50° | 0% |
| Canadian model (GEM) | 68° | 47° | 0% |
| The average | 69° | 46° | 0% |
High 68° Low 43° Rain 0%
They agree — trust it (highs spread 1°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 68° | 38° | 0% |
| US model (GFS) | 67° | 44° | 0% |
| European model (ECMWF) | 67° | 37° | 0% |
| German model (ICON) | 68° | 48° | 0% |
| Canadian model (GEM) | 68° | 46° | 0% |
| The average | 68° | 43° | 0% |
High 63° Low 39° Rain 1%
They agree — trust it (highs spread 1°, rain spread 5 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 63° | 34° | 0% |
| US model (GFS) | 64° | 42° | 0% |
| European model (ECMWF) | 63° | 43° | 0% |
| German model (ICON) | 63° | 42° | 5% |
| Canadian model (GEM) | 62° | 34° | 0% |
| The average | 63° | 39° | 1% |
High 58° Low 38° Rain 0%
They agree — trust it (highs spread 3°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 58° | 36° | 0% |
| US model (GFS) | 57° | 40° | 0% |
| European model (ECMWF) | 59° | 41° | 0% |
| German model (ICON) | 56° | 38° | 0% |
| Canadian model (GEM) | 57° | 32° | 0% |
| The average | 58° | 38° | 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.