Possible Clues:

• What The Sun's fans are looking for leads to local pressure from police department to renounce report?
• Prolonged period of very warm weather
• Long high-temp stretch
• Gesture after race when you're desperate to cool off?
• Long period of very hot weather
• Irving Berlin song for the 1933 musical 'As Thousands Cheer'
• Long spell of hot weather
• Stretch in the 90s, e.g.
• Spell of very warm weather
• Stretch in the 90's, say