combination of atmospheric elements that make every day different temperature, humidity, wind the observation and recording of weather during many years in unpopulated areas it has very cold and very hot days hot summers, cold winters, few (scarce) rain warm dry climate, temperate climate, dry desert-like climate located in the North and East; receives damp winds from the Gulf of Mexico; warmest days in July; rainiest days in September; coldest days in January located in the central part on the Sierra Madre Oriental; average temperatures all year; warm days in August; more rain than other regions,;coldest days in January southern part of the state; very high and very low temperatures; warmest days in June, July, and August; almost no rain; coldest days in January