Hint: Weather
The answer to this puzzle is:
1. THUNDER
2. COAT
3. BREEZE
4. FROST
5. RAINBOW
6. FRONT
7. SPRINKLE
8. HEATWAVE
9. COLD
10. STORM
11. LIGHTNING
12. WINTER
2. COAT
3. BREEZE
4. FROST
5. RAINBOW
6. FRONT
7. SPRINKLE
8. HEATWAVE
9. COLD
10. STORM
11. LIGHTNING
12. WINTER