 This winter precipitation maximum is unusual for humid continental climates, which typically have a late spring or early summer precipitation maximum (for example, most of the Midwestern U.S.).Most heavy precipitation events in St. John's are the product of intense mid-latitude storms from the Northeastern U.S. and New England states, and these are most common and intense from October to March, bringing heavy precipitation (commonly 4 to 8 centimetres of rainfall equivalent in a single storm), and strong winds.In winter, two or more types of precipitation (rain, freezing rain, sleet and snow) can fall from passage of a single storm.