An AI tool improves weather forecasts up to a month ahead
⏮ BeforeForecasts beyond about two weeks were unreliable for most purposes.
✅ NowAn AI tool improves accuracy three to five weeks ahead, including for extremes.
In short
- The tool improves forecasts of precipitation, temperature and pressure 3 to 5 weeks ahead.
- It refines both physics-based and AI-based weather models.
- It helps predict extremes of heat, cold, rainfall and flooding earlier.
Why the Good News Desk likes this one
Forecasting beyond two weeks has been notoriously hard, so most planning relies on guesswork at that range. This tool sharpens predictions in that gap, which matters for farmers, water managers and emergency planners. The source describes an advance in prediction, not a finished system in daily use.
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From Nature
Nature, Published online: 21 October 2026; doi:10.1038/d41586-026-03077-0 An innovative artificial-intelligence application enhances weather forecasting in the difficult subseasonal range, providing accurate forecasts of precipitation, temperature and pressure 3–5 weeks in advance. The tool refines both physics- and AI-based weather models and improves the early prediction of extremes of heat, cold, rainfall and flooding.
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