Nantucket, MA — every free forecast we can get, averaged to be a little more right. County seat of Nantucket 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 56° Low 48° Rain 100%
Pretty close — fairly safe (highs spread 3°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 49° | 100% |
| US model (GFS) | 57° | 44° | 100% |
| European model (ECMWF) | 54° | 51° | 100% |
| German model (ICON) | 55° | 50° | 100% |
| Canadian model (GEM) | 56° | 46° | 100% |
| The average | 56° | 48° | 100% |
High 50° Low 45° Rain 72%
They disagree — a coin flip (highs spread 6°, rain spread 45 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 53° | 43° | 76% |
| US model (GFS) | 47° | 44° | 46% |
| European model (ECMWF) | 51° | 48° | 91% |
| German model (ICON) | 50° | 47° | 58% |
| Canadian model (GEM) | 49° | 45° | 90% |
| The average | 50° | 45° | 72% |
High 48° Low 43° Rain 23%
Pretty close — fairly safe (highs spread 2°, rain spread 23 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 47° | 41° | 22% |
| US model (GFS) | 48° | 44° | 9% |
| European model (ECMWF) | 49° | 45° | 28% |
| German model (ICON) | 47° | 44° | 23% |
| Canadian model (GEM) | 47° | 43° | 32% |
| The average | 48° | 43° | 23% |
High 49° Low 43° Rain 3%
Pretty close — fairly safe (highs spread 3°, rain spread 8 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 51° | 42° | 8% |
| US model (GFS) | 48° | 43° | 2% |
| European model (ECMWF) | 48° | 43° | 4% |
| German model (ICON) | 48° | 44° | 0% |
| Canadian model (GEM) | 48° | 43° | 2% |
| The average | 49° | 43° | 3% |
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.