Boulder, MT — every free forecast we can get, averaged to be a little more right. County seat of Jefferson 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 60° Low 37° Rain 0%
Pretty close — fairly safe (highs spread 5°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 36° | 0% |
| US model (GFS) | 58° | 38° | 0% |
| European model (ECMWF) | 59° | 38° | 0% |
| German model (ICON) | 63° | 36° | 0% |
| Canadian model (GEM) | 58° | 37° | 0% |
| The average | 60° | 37° | 0% |
High 56° Low 39° Rain 0%
They agree — trust it (highs spread 2°, rain spread 1 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 55° | 36° | 1% |
| US model (GFS) | 57° | 42° | 0% |
| European model (ECMWF) | 55° | 38° | 0% |
| German model (ICON) | 57° | 42° | 0% |
| Canadian model (GEM) | 56° | 36° | 0% |
| The average | 56° | 39° | 0% |
High 54° Low 33° Rain 13%
They disagree — a coin flip (highs spread 6°, rain spread 17 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 51° | 31° | 11% |
| US model (GFS) | 53° | 35° | 13% |
| European model (ECMWF) | 54° | 36° | 6% |
| German model (ICON) | 53° | 33° | 23% |
| Canadian model (GEM) | 57° | 32° | 14% |
| The average | 54° | 33° | 13% |
High 50° Low 32° Rain 0%
Pretty close — fairly safe (highs spread 5°, rain spread 2 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 48° | 32° | 2% |
| US model (GFS) | 48° | 32° | 0% |
| European model (ECMWF) | 50° | 33° | 0% |
| German model (ICON) | 51° | 33° | 0% |
| Canadian model (GEM) | 52° | 27° | 0% |
| The average | 50° | 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.