I'm not sure if this will improve long-term weather forecasts, like this [1], where an el nino was predicted but it still rained more than expected.

[1] Farmers frustrated after destocking following BOM's incorrect El Niño forecast: https://www.abc.net.au/news/rural/2024-01-22/farmers-frustra...

Unless you're putting money down today the model doesn't mean anything.

Predicting the past isn't the same thing as predicting the future. You can train a model or compose an algorithm that fits existing data but that doesn't necessarily mean it has predictive power far into the future.

Wait, what were they basing the previous model on?!

Meanwhile it's still basically a coin flip if it's going to rain tomorrow.