Brentwood, NH — every free forecast we can get, averaged to be a little more right. County seat of Rockingham 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 48° Low 37° Rain 87%
They disagree — a coin flip (highs spread 3°, rain spread 43 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 31° | 98% |
| US model (GFS) | 48° | 39° | 57% |
| European model (ECMWF) | 47° | 39° | 100% |
| German model (ICON) | 48° | 39° | 93% |
| Canadian model (GEM) | 50° | 39° | 89% |
| The average | 48° | 37° | 87% |
High 43° Low 33° Rain 82%
They disagree — a coin flip (highs spread 2°, rain spread 38 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 44° | 27° | 63% |
| US model (GFS) | 43° | 35° | 61% |
| European model (ECMWF) | 44° | 34° | 99% |
| German model (ICON) | 43° | 35° | 95% |
| Canadian model (GEM) | 43° | 34° | 90% |
| The average | 43° | 33° | 82% |
High 46° Low 30° Rain 2%
They agree — trust it (highs spread 2°, rain spread 3 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 47° | 28° | 1% |
| US model (GFS) | 45° | 32° | 2% |
| European model (ECMWF) | 45° | 31° | 2% |
| German model (ICON) | 46° | 33° | 3% |
| Canadian model (GEM) | 45° | 28° | 0% |
| The average | 46° | 30° | 2% |
High 47° Low 33° Rain 0%
Pretty close — fairly safe (highs spread 3°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 49° | 30° | 0% |
| US model (GFS) | 46° | 31° | 0% |
| European model (ECMWF) | 46° | 33° | 0% |
| German model (ICON) | 46° | 34° | 0% |
| Canadian model (GEM) | 47° | 35° | 0% |
| The average | 47° | 33° | 0% |
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.