Ningbo is one of China's oldest cities,with a history dating back to the Hemudu culture in 4800 BC.
Climatic Features:monsoon-influenced humid subtropical climate (Koppen Cfa),featuring temperate and humid weather and four distinct seasons; frost-free period of 230-240 days
Mean Temperature:annual-17.0 °C (62.6 °F),January-4.8 °C (40.6 °F),July-29.0 °C (84.2 °F)
Average Rainfall:1,450 millimetres (57.1 in)
Humid subtropical climate
A Humid subtropical climate (Köppen Cfa or Cwa) is a climate zone characterized by hot,humid summers and cool winters.This climate type covers a broad category of climates,and the term "subtropical" may be a misnomer for the winter climate.
Significant amounts of precipitation occur in all seasons in most areas.Winter rainfall (and sometimes snowfall) is associated with large storms that the westerlies steer from west to east.Most summer rainfall occurs during thunderstorms and an occasional tropical storm,hurricane or cyclone.
Humid subtropical climates lie on the southeast side of all continents between latitudes 25° and 40° north and south.Two of the few exceptions where this climate zone reaches up to latitude 46° north are in the Po Valley of Italy and Toulouse region of France,and along the Black Sea coast of Europe.
The Koppen definition of this climate is for the coldest month's mean temperature to be between −3 °C (26.6 °F) and 18 °C (64.4 °F),and the warmest month to be above 22 °C (71.6 °F); along with either a dry winter- with less than one tenth of the precipitation of the wettest summer month- (Köppen:w) or without dry season (Köppen:f,winter months get more than one tenth of the precipitation of the wettest summer month,and summer months get at least 30 mm (1.2 in) per month or more than one third as much the wettest winter month).