Forecasting the weather involves recording the ongoing measurements of temperature, pressure, precipitation, wind speed, and the amount of cloud cover, and giving those current readings and reports to the public. The reports of the current conditions are then used to predict the weather further out.

The "weather report method" refers to the various scientific techniques used by meteorologists to observe, analyze, and predict atmospheric conditions. The most fundamental is Persistence Forecasting, which assumes tomorrow's weather will be the same as today's—useful only in stable tropical climates. A more advanced approach is Numerical Weather Prediction (NWP), which uses supercomputers to solve complex mathematical equations based on conservation of mass and energy. Other methods include Climatology, which uses long-term averages for a specific date, and Synoptic Forecasting, where forecasters look at large-scale systems like high and low-pressure fronts on a weather map. Modern "Nowcasting" relies heavily on Doppler radar and satellite imagery to provide high-resolution updates for the next few hours. Additionally, Ensemble Forecasting runs multiple versions of a model with slightly different initial data to account for the atmosphere's chaotic nature and provide a probability (e.g., a "40% chance of rain").