Summer Fun

4. A prolonged absence of rainfall
6. Popular shellfish often served at summer seaside festivals
7. Optical illusion produced by layers of heated air
8. A meteorological term for a storm producing thunder, lightning, and heavy rain
11. The apparent temperature combining heat and humidity
14. Outdoor meal traditionally packed in a basket
15. Insect whose persistent buzzing can ruin an evening barbecue
17. Fine airborne particles that can worsen during wildfire season
20. Vacation home used seasonally, often near a lake

1. Extended period of unusually high temperatures
2. Protective measure against ultraviolet radiation, measured by an SPF rating
3. The point at which the Northern Hemisphere receives its maximum daylight
5. Agricultural product most associated with county fairs and midsummer harvests
9. Atmospheric condition that makes temperatures feel warmer than they are
10. Common astronomical phenomenon responsible for August's Perseid display
12. Device used to cool outdoor patios by dispersing a fine spray of water
13. July and August are considered these in the tourism industry
16. Annual celestial event associated with the zodiac sign Cancer
18. Evening insect whose bioluminescence attracts mates
19. Seasonal nuisance caused by pollen-producing grasses