Which statement best defines climate?

• A. Weather describes conditions at a single moment
• B. The daily high temperature
• C. The amount of rainfall per year
• D. Average conditions over a long period

Answer: (D)

Climate is the typical weather pattern a region experiences when you look at data across many years. It relies on long-term averages to describe what’s normal for temperature, precipitation, and seasonal changes, so you can understand the kind of climate a place has rather than what the weather is like on any single day.

That’s why the statement about average conditions over a long period best defines climate. Weather describes conditions at a single moment or day, so a daily high is a weather data point. The amount of rainfall per year is a single yearly measure, not the full long-term average that characterizes climate.