Complete the crossword puzzle

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Across
  1. 1. very low temperature
  2. 2. small pieces of ice that fall during a storm
  3. 3. below zero
  4. 4. moisture in the air
  5. 7. not very cold
  6. 8. scale of temperature used in the USA
  7. 10. time of the year with specific weather conditions
  8. 12. person who studies weather conditions
  9. 14. very light rain
  10. 16. temperature below zero, extremely cold
  11. 17. warm temperature in a cold day
Down
  1. 1. sky covered by white or dark masses
  2. 5. device to measure temperature
  3. 6. raining very hard
  4. 7. scale of temperature used around the word
  5. 8. thick water vapor that blocks one's vision
  6. 9. state of the atmosphere about how cold or how hot it is
  7. 11. storm with snow and wind
  8. 13. blowing air
  9. 15. frozen water falling to earth