Castle Rock, CO — every free forecast we can get, averaged to be a little more right. County seat of Douglas 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 64° Low 35° Rain 0%
They agree — trust it (highs spread 2°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 38° | 0% |
| US model (GFS) | 65° | 37° | 0% |
| European model (ECMWF) | 64° | 38° | 0% |
| German model (ICON) | 63° | 37° | 0% |
| Canadian model (GEM) | 65° | 27° | 0% |
| The average | 64° | 35° | 0% |
High 66° Low 37° Rain 0%
They agree — trust it (highs spread 3°, rain spread 2 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 66° | 37° | 2% |
| US model (GFS) | 66° | 42° | 0% |
| European model (ECMWF) | 65° | 39° | 0% |
| German model (ICON) | 65° | 38° | 0% |
| Canadian model (GEM) | 67° | 32° | 0% |
| The average | 66° | 37° | 0% |
High 53° Low 35° Rain 42%
Pretty close — fairly safe (highs spread 5°, rain spread 24 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 54° | 37° | 31% |
| US model (GFS) | 56° | 33° | 45% |
| European model (ECMWF) | 52° | 36° | 55% |
| German model (ICON) | 54° | 35° | 33% |
| Canadian model (GEM) | 52° | 35° | 44% |
| The average | 53° | 35° | 42% |
High 55° Low 32° Rain 18%
Pretty close — fairly safe (highs spread 4°, rain spread 24 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 53° | 33° | 3% |
| US model (GFS) | 56° | 33° | 27% |
| European model (ECMWF) | 56° | 34° | 18% |
| German model (ICON) | 57° | 32° | 23% |
| Canadian model (GEM) | 55° | 30° | 21% |
| The average | 55° | 32° | 18% |
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.