Cloud Formation

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Across
  1. 5. Thermometer reading
  2. 7. Rain and snow
  3. 8. Tiny bit
  4. 12. Flames give it off
  5. 14. Turn into gas
  6. 15. Barometer measurement
  7. 16. Climb
  8. 18. Birds fly in it
  9. 19. Shower
Down
  1. 1. Wetness of the air
  2. 2. Rain source
  3. 3. Thermal __
  4. 4. Local news segment
  5. 6. It surrounds the Earth
  6. 9. Compress
  7. 10. Oxygen
  8. 11. Moisten
  9. 13. Gaseous mist
  10. 17. Star