While weather focuses on the next few days, climatology examines patterns that persist over decades and centuries. The field compiles long records of temperature, precipitation, wind, and other variables to describe typical conditions and their variability.

Climatologists study how geography shapes climate, how past climates differed from today’s, and how current trends may evolve. They use statistical tools, climate models, and proxy data from tree rings, sediments, and ice cores.

Results feed into agriculture, water management, energy planning, and insurance risk assessment. Regional climate atlases and normals published by meteorological services are products of this work. The discipline also investigates extreme-value statistics so societies can prepare for rare but costly events.

• Studies long-term weather patterns
• Uses observations and proxy records
• Supports planning across sectors
• Examines both means and extremes