Gretna, LA — every free forecast we can get, averaged to be a little more right. County seat of Jefferson Parish.
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 75° Low 57° Rain 0%
Pretty close — fairly safe (highs spread 4°, rain spread 0 points, 4 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | — | 53° | 0% |
| US model (GFS) | 77° | 59° | 0% |
| European model (ECMWF) | 73° | 64° | 0% |
| German model (ICON) | 75° | 58° | 0% |
| Canadian model (GEM) | 77° | 52° | 0% |
| The average | 75° | 57° | 0% |
High 67° Low 50° Rain 0%
Pretty close — fairly safe (highs spread 6°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 66° | 47° | 0% |
| US model (GFS) | 69° | 51° | 0% |
| European model (ECMWF) | 64° | 53° | 0% |
| German model (ICON) | 65° | 49° | 0% |
| Canadian model (GEM) | 69° | 50° | 0% |
| The average | 67° | 50° | 0% |
High 60° Low 46° Rain 0%
They agree — trust it (highs spread 3°, rain spread 0 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 59° | 50° | 0% |
| US model (GFS) | 61° | 43° | 0% |
| European model (ECMWF) | 58° | 49° | 0% |
| German model (ICON) | 60° | 43° | 0% |
| Canadian model (GEM) | 61° | 45° | 0% |
| The average | 60° | 46° | 0% |
High 66° Low 51° Rain 17%
They disagree — a coin flip (highs spread 4°, rain spread 31 points, 5 sources)
| Source | High | Low | Rain |
|---|---|---|---|
| National Weather Service | 65° | 53° | 31% |
| US model (GFS) | 66° | 57° | 12% |
| European model (ECMWF) | 64° | 52° | 30% |
| German model (ICON) | 65° | 49° | 10% |
| Canadian model (GEM) | 68° | 46° | 0% |
| The average | 66° | 51° | 17% |
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.