/ˌwɛðərˈɒlədʒi/
[noun] An informal or humorous term for the study and prediction of weather, often used as a playful alternative to the more established word 'meteorology'. It combines everyday language with a scientific-sounding ending to describe weather forecasting in a simple, accessible way.
This word was essentially invented twice — once as a joke, once in earnest — and neither version ever truly caught on.
The word 'weatherology' is a hybrid creation, built from two very different linguistic traditions joined together in a way that professional linguists would call a 'contamination' or, less unkindly, a folk compound. The first part comes from the Old English word 'weder', meaning atmospheric conditions — wind, rain, and sky — which itself descends from the Proto-Germanic 'wedram', related to the concept of wind or storm. This Old English root gave us the everyday word 'weather' that has been used in English since at least the 9th century.
The second part, '-ology', travels a much longer road. It comes from the Ancient Greek suffix '-logia', meaning 'the study of' or 'a branch of knowledge', which is itself built from the Greek word 'logos', meaning 'word', 'reason', or 'account'. This suffix entered English through Latin and Old French during the great wave of scientific Latin adopted in the 16th and 17th centuries. Words like 'theology' (Greek 'theos' meaning God, + '-logia') and 'biology' (Greek 'bios' meaning life, + '-logia') followed the pattern Greek → Latin → English, and the '-ology' ending quickly became a productive suffix in English, meaning speakers could attach it to almost any root to create a new field of study.
The problem — and the charm — of 'weatherology' is that it mixes a Germanic root ('weather' from Old English 'weder') with a Greek suffix ('-ology'), producing what scholars call a hybrid or mongrel word. Purists have long complained about such mixtures. The 'correct' classical formation already existed long before 'weatherology' appeared: that word is 'meteorology', from the Ancient Greek 'meteorologia', itself built from 'meteoron' (meaning 'thing in the sky' or 'atmospheric phenomenon', from 'meta-' meaning 'beyond' + 'aeirein' meaning 'to raise') combined with '-logia'. Greek → Latin 'meteorologia' → English 'meteorology', first recorded in English in the late 16th century.
'Weatherology' appears to have emerged in the 19th century, a period when '-ology' words were fashionable and almost any subject could be given one. It was used occasionally in newspapers and popular writing, sometimes seriously by amateur weather enthusiasts and sometimes mockingly by critics poking fun at the tendency to dress up simple ideas in grand scientific language. A number of regional weather observers in the United States and Britain in the mid-to-late 1800s adopted the term to describe their informal forecasting methods, giving it a brief but genuine life outside pure comedy.
In the 20th century, 'weatherology' settled into a curious middle ground. It is not recognised as a formal scientific term — meteorology firmly holds that position — but it reappears regularly in popular culture, children's books, novelty weather instruments, and advertising, where its friendly, accessible sound makes it useful. In this sense it tells a revealing story about how language works: sometimes a word survives not because it is correct or precise, but simply because it sounds right to ordinary people and fills a gap that the formal vocabulary leaves open.