What is the difference between weather and climate?

Weather is the short-term atmospheric conditions at a specific place and time. → "It's 72°F and sunny in Miami today." Climate is the average weather pattern of a region over a long period (typically 30+ years). → "Miami has a tropical climate with hot, humid summers." Key differences: • Weather changes daily; climate changes over decades/centuries • Weather is measured by thermometers, barometers; climate by long-term data records • Weather forecasts are short-term (hours to days); climate projections are long-term A helpful way to remember: "Climate is what you expect; weather is what you get." You pack a winter coat for Alaska's climate, but check the weather forecast to decide if you also need an umbrella today.