Weather forecasts are predictions about the atmospheric conditions in a specific area over a certain period. They are created using data from various sources, including satellites, weather stations, and radar systems. Meteorologists analyze this information to provide updates on temperature, precipitation, wind speed, and other weather-related factors. These forecasts help people plan their daily activities, such as deciding what to wear or whether to carry an umbrella. They can also inform important decisions in sectors like agriculture, transportation, and emergency management, ensuring that communities are prepared for changing weather conditions.