How long does it take for weather forecasts to update?

Asked on: 7/25/2025

This question has been asked1times.

Weather forecasts typically update every 6 to 12 hours, depending on the source and technology used.

Estimated Duration: 12 hours

Weather forecasts are updated based on data collected from satellites, radar, and weather stations, processed by supercomputers. Most meteorological services refresh their forecasts every 6-12 hours to provide the most accurate predictions. Short-term forecasts (nowcasts) may update more frequently (every 1-2 hours), while long-range forecasts refresh daily. The update frequency also depends on the platform (apps, websites, or TV broadcasts) and the severity of weather conditions. For real-time updates, specialized weather apps or government meteorological websites are the most reliable sources.