Boulder, CO — every free forecast we can get, averaged to be a little more right. County seat of Boulder 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 67° Low 43° Rain 0%
Pretty close — fairly safe (highs spread 4°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 41° | 0% |
| US model (GFS) | 68° | 44° | 0% |
| European model (ECMWF) | 67° | 40° | 0% |
| German model (ICON) | 66° | 50° | 0% |
| Canadian model (GEM) | 65° | 39° | 0% |
| The average | 67° | 43° | 0% |
High 62° Low 40° Rain 0%
They disagree — a coin flip (highs spread 7°, rain spread 1 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 63° | 38° | 1% |
| US model (GFS) | 66° | 41° | 0% |
| European model (ECMWF) | 62° | 37° | 0% |
| German model (ICON) | 62° | 49° | 0% |
| Canadian model (GEM) | 59° | 38° | 0% |
| The average | 62° | 40° | 0% |
High 52° Low 38° Rain 28%
They disagree — a coin flip (highs spread 8°, rain spread 13 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 52° | 38° | 22% |
| US model (GFS) | 53° | 34° | 35% |
| European model (ECMWF) | 49° | 39° | 25% |
| German model (ICON) | 56° | 44° | 28% |
| Canadian model (GEM) | 48° | 36° | 29% |
| The average | 52° | 38° | 28% |
High 54° Low 36° Rain 14%
Pretty close — fairly safe (highs spread 4°, rain spread 23 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 54° | 33° | 0% |
| US model (GFS) | 56° | 35° | 12% |
| European model (ECMWF) | 54° | 34° | 11% |
| German model (ICON) | 56° | 43° | 22% |
| Canadian model (GEM) | 52° | 36° | 23% |
| The average | 54° | 36° | 14% |
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.