Possible Clues:

• Tempers be changed by this month
• Might tempers be altered this month?
• Tempers be changed this month
• Ninth month
• 'Do you remember the 21st night of ___?'
• Time when, in short, pest could be destroyed
• 'In what month of pregnancy does a woman begin to look pregnant?' '___'
• Glowing at last, just before 18 down
• What's to appear about quiet end of August? Be right with this!
• One might be PM and steer with it then