The climate of Mianyang City, which is in the humid subtropical monsoon climate zone, is temperate. The annual average temperature ranges from 18℃ to 21℃, and there are 235 to 251 days in a row for the 24-hour average ex-ceeding 10℃. The frost-free period lasts 252 to 300 days. The City has only 1,100 hours of sunshine per year due to cloudiness, with sunshine percentage below 30%. The air is humid, with annual relative humidity ranging from 70% to 80% on average. Northerly wind and northeasterly wind are main wind direc-tions; the annual average wind speed is in a range of 0.8-1.6 m/s; and the frequency of calm winds is comparatively high. It is warm in winter, so snowfall is little, with an average of 1 to 3 snow days per year in the urban area. There is sharp contrast by elevation within the area, with the highest of 5588 m while the lowest only 307 m.
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