Alturas, CA — every free forecast we can get, averaged to be a little more right. County seat of Modoc County.
Updated Friday, November 13, 2026. Recorded fresh this morning from five free sources, and graded later against what the weather actually did.
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High 64° Low 29° Rain 1%
Pretty close — fairly safe (highs spread 4°, rain spread 4 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 35° | 4% |
| US model (GFS) | 66° | 21° | 1% |
| European model (ECMWF) | 64° | 40° | 0% |
| German model (ICON) | 66° | 24° | 0% |
| Canadian model (GEM) | 62° | 26° | 0% |
| The average | 64° | 29° | 1% |
High 50° Low 35° Rain 96%
Pretty close — fairly safe (highs spread 4°, rain spread 12 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 50° | 29° | 98% |
| US model (GFS) | 48° | 35° | 95% |
| European model (ECMWF) | 51° | 39° | 100% |
| German model (ICON) | 50° | 37° | 88% |
| Canadian model (GEM) | 52° | 34° | 100% |
| The average | 50° | 35° | 96% |
High 49° Low 33° Rain 14%
Pretty close — fairly safe (highs spread 4°, rain spread 16 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 48° | 28° | 8% |
| US model (GFS) | 48° | 35° | 16% |
| European model (ECMWF) | 47° | 38° | 10% |
| German model (ICON) | 48° | 34° | 10% |
| Canadian model (GEM) | 51° | 30° | 24% |
| The average | 49° | 33° | 14% |
High 48° Low 36° Rain 85%
They disagree — a coin flip (highs spread 8°, rain spread 17 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 48° | 28° | 92% |
| US model (GFS) | 51° | 37° | 88% |
| European model (ECMWF) | 46° | 39° | 78% |
| German model (ICON) | 44° | 36° | 75% |
| Canadian model (GEM) | 52° | 40° | 90% |
| The average | 48° | 36° | 85% |
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.