The Weather Conditions
Puzzle 7 of Agatha Christie Medium Pack
Question is: The Weather Conditions
and the answer is: CLIMATE
Word Meaning:
CLIMATE — The long-term manifestations of weather and other atmospheric conditions in a given area or country, now usually represented by the statistical summary of its weather conditions during a period long enough to ensure that representative values are obtained (generally 30 years).
Definitions from Wiktionary.