This paper describes and analyses a hitherto unknown document of considerable historical significance: a narrative diary of the weather for every day of the year 1703. Available evidence enables us to assign the authorship of the document, with a high degree of probability, to an Oxford graduate residing in rural Worcestershire. The text presents plentiful natural philosophical speculations about the causes of meteorological phenomena, drawing both upon the ideas of leading scientific thinkers and upon vernacular lore concerning the weather. Furthermore, the diarist composed a remarkably personal document, in a richly descriptive style, cataloguing his physiological and emotional reactions to prevailing weather conditions. The document thus represents an empathic and discursive style of meteorology, an alternative to the contemporary efforts to establish objective weather records that have previously been recognized by historians.
Oft, as he travers'd the coerulean field,
And mark'd the Clouds that drove before the wind;
Ten thousand glorious systems would he build,
Ten thousand great ideas fill'd his mind;
But with the clouds they fled, and left no trace behind!
James Thomson, The Castle of Indolence (1748).