Every winter it happens somewhere, a brutal cold snap hits parts of the United States, snow piles up in places that rarely see it, and within days someone somewhere points at the freezing temperatures and asks how anyone can still believe in global warming. It is one of the most common arguments against climate change, and it is also one of the easiest to get wrong.
The cold snap is not evidence against a warming planet. And to understand why, you have to know a little about the polar vortex. It is a large area of cold air surrounded by strong winds high above the Arctic. When the circulation around it is stable, most of that extremely cold air stays concentrated near the pole. But the system can become distorted, stretched, or displaced, letting a pocket of that Arctic air slide much further south than it normally would. That is when a place like Texas can suddenly find itself dealing with temperatures it is simply not built for.
Here is the part I found interesting once I looked into it more closely. There has been years of serious scientific research into whether the rapidly warming Arctic is changing the behaviour of the polar vortex and the jet stream beneath it. Some studies have found real links between Arctic warming and shifts in atmospheric circulation. Other studies, running different models, find the opposite, or find no clear link at all. Scientists are still actively debating the strength and even the direction of that particular relationship.
What is not remotely controversial is the more basic point underneath all of it, a warming planet does not mean every place gets warmer every single day, week, or year.
That distinction matters because it goes back to something worth repeating, weather is not climate. Weather is what is happening outside your window this week. Climate is the pattern that emerges over decades. A single freezing week in Texas tells you very little about the direction the planet is heading, just as one heatwave in July cannot tell you that on its own either. What actually matters is the long-term pattern, measured over decades, not days.
I understand why the cold snap argument feels intuitive. If the planet is warming, surely it should just get warmer everywhere, all the time. But the atmosphere does not work like a thermostat in every room of a house. Climate is a complicated system, and changing the average temperature of the planet does not produce an identical change in every location. Some regions warm faster than others. Some weather patterns shift in ways that are still being studied. Some places experience more extreme heat while others, under the right conditions, experience extreme cold. None of that cancels out the long-term warming trend underneath it.
I do not think the people who point at snow and say the climate cannot be changing are being dishonest. I think they are looking at the wrong timescale, and reaching for the most immediate, visible evidence in front of them, a freezing week, rather than the much slower pattern building underneath it. That confusion is understandable. A cold winter is not an argument against a warming climate. And in the end, it is simply weather.
