unseasonal [ʌnˈsi:zənl]

例句:

• Unseasonal wind and rain lash the traffic-clogged street outside.
  来自THETIMES
• Regimen books say that people should eat more seasonal vegetables and avoid unseasonal food.
  养生书籍上讲,人应该多吃时菜,少吃反季节食品.
  
• It is the middle of summer, but there is an unseasonal mist pressing against the windowpanes.
  夏天过去了一半, 但有不合季节的薄雾推窗玻璃.
  
• Dave Evans from Hampshire took this image of a Buckingham Palace guard "braving an unseasonal snow storm" on Thursday.
  来自BBC
• Britain is bracing for more unseasonal weather this weekend with thunderstorms and hail raising the risk of localised flooding.
  来自THETIMES