Partly Sunny or Partly Cloudy?
These expressions refer to a percentage of clouds covering the sky. For 5 percent or less sky cover…Sunny or Clear is used. For ranges greater than 5 and less than or equal to 25 percent…Sunny or Mostly Clear is used. Partly Cloudy or Mostly Sunny is used for greater than 25 percent to less than or equal to 50 percent cloud cover. Partly Sunny or Mostly Cloudy is used for a sky cover percentage of greater than 50 percent or less than or equal to 69 percent. Mostly Cloudy is used for the range of 69 to 87 percent. Finally…Cloudy or Overcast is used to describe 87 percent or higher.