Martinez, CA — every free forecast we can get, averaged to be a little more right. County seat of Contra Costa 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 73° Low 50° Rain 5%
Pretty close — fairly safe (highs spread 5°, rain spread 19 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 54° | 19% |
| US model (GFS) | 71° | 49° | 3% |
| European model (ECMWF) | 72° | 50° | 0% |
| German model (ICON) | 73° | 50° | 3% |
| Canadian model (GEM) | 76° | 47° | 1% |
| The average | 73° | 50° | 5% |
High 60° Low 51° Rain 100%
They agree — trust it (highs spread 2°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 60° | 48° | 100% |
| US model (GFS) | 60° | 50° | 100% |
| European model (ECMWF) | 59° | 53° | 100% |
| German model (ICON) | 61° | 54° | 100% |
| Canadian model (GEM) | 59° | 51° | 100% |
| The average | 60° | 51° | 100% |
High 64° Low 49° Rain 14%
They agree — trust it (highs spread 2°, rain spread 13 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 64° | 49° | 14% |
| US model (GFS) | 64° | 50° | 15% |
| European model (ECMWF) | 64° | 50° | 6% |
| German model (ICON) | 65° | 48° | 15% |
| Canadian model (GEM) | 63° | 48° | 19% |
| The average | 64° | 49° | 14% |
High 63° Low 51° Rain 92%
They disagree — a coin flip (highs spread 7°, rain spread 13 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 62° | 50° | 90% |
| US model (GFS) | 67° | 54° | 87% |
| European model (ECMWF) | 62° | 55° | 91% |
| German model (ICON) | 60° | 49° | 100% |
| Canadian model (GEM) | 64° | 49° | 92% |
| The average | 63° | 51° | 92% |
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.