Possible Clues:

• Artist during autumn depicting effect of clouds
• Shower with autumn precipitation
• '23 21 10 3 ___ 24 ___', wrote fellow after 22 14across 4
• Weather data filter left by day attached to zip lines
• Seattle statistic
• Brief news about artist's decline? The result of depression maybe
• Drops rule, given hearing before autumn
• Amount of precipitation that has fallen over a time
• Climate measure, one representing sun in autumn
• Amount of water coming down