Norristown, PA — every free forecast we can get, averaged to be a little more right. County seat of Montgomery 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 61° Low 46° Rain 92%
They disagree — a coin flip (highs spread 6°, rain spread 23 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 37° | 77% |
| US model (GFS) | 62° | 49° | 85% |
| European model (ECMWF) | 60° | 50° | 100% |
| German model (ICON) | 58° | 48° | 100% |
| Canadian model (GEM) | 64° | 48° | 100% |
| The average | 61° | 46° | 92% |
High 48° Low 35° Rain 94%
Pretty close — fairly safe (highs spread 4°, rain spread 19 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 46° | 32° | 95% |
| US model (GFS) | 49° | 34° | 80% |
| European model (ECMWF) | 50° | 36° | 99% |
| German model (ICON) | 48° | 38° | 98% |
| Canadian model (GEM) | 49° | 36° | 96% |
| The average | 48° | 35° | 94% |
High 46° Low 34° Rain 30%
They disagree — a coin flip (highs spread 5°, rain spread 59 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 47° | 32° | 1% |
| US model (GFS) | 44° | 34° | 22% |
| European model (ECMWF) | 46° | 35° | 23% |
| German model (ICON) | 47° | 34° | 60% |
| Canadian model (GEM) | 42° | 36° | 46% |
| The average | 46° | 34° | 30% |
High 48° Low 36° Rain 0%
Pretty close — fairly safe (highs spread 4°, rain spread 2 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 50° | 33° | 0% |
| US model (GFS) | 47° | 38° | 0% |
| European model (ECMWF) | 48° | 39° | 2% |
| German model (ICON) | 48° | 37° | 0% |
| Canadian model (GEM) | 46° | 33° | 0% |
| The average | 48° | 36° | 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.