What Is Weather? The Elements Explained

Weather is the state of the atmosphere at a specific place and time. Six key elements:

1. Temperature – warmth/cold (ºC/ºF); driven by solar radiation, surface absorption, air-mass movement.
2. Humidity – water vapor % of capacity; affects perceived temperature (heat index, wind chill).
3. Precipitation – rain, snow, sleet, hail; from condensed vapor in clouds.
4. Wind – speed (km/h, mph) & direction (degrees from N); transports heat/moisture.
5. Cloud Cover – fraction of sky obscured; modulates solar gain.
6. Pressure – atmospheric weight; high = fair, low = stormy.

Weather vs. Climate

Weather = short-term (hours/days). Climate = long-term averages (30+ years). Weather varies rapidly; climate shifts slowly.

Meteorologists observe, model, and forecast using satellites, radar, balloons, surface stations, and supercomputers.