Climate versus weather - (n.)
Weather is the day-to-day pattern of atmospheric flow with its associated cloud cover, temperature, and humidity. To answer the question "Will it rain in Los Angeles tomorrow?" a weather forecast is required. The season-to-season or year-to-year variability of weather in an overall or average sense is called climate. To address the question "Will the ongoing drought persist for another two years?", a climate forecast is required to find the probable answer. Climate is typically described by the regional patterns of seasonal temperature and precipitation. Average annual temperature, average rainfall, average cloud cover, and average depth of frost penetration are typical climate-related statistics.