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In other words, while the globe may be warmer than average as a whole, some areas will still observe colder temperatures and even severe cold outbreaks, this regional variation is due to the influences of the oceans, mountains, deserts, ice sheets, and other geographic features that all affect our weather and climate. It's also from changes in weather patterns that are related to the position of the jet stream( storm track), which can vary from day-to-day or even month-to-month.