I think you are thinking about "The day after tomorrow"? Read this for a similar event in historic times: https://en.wikipedia.org/wiki/Little_Ice_Age https://

I think you are thinking about "The day after tomorrow"? Read this for a similar event in historic times: https://en.wikipedia.org/wiki/Little_Ice_Age https://en.wikipedia.org/wiki/Little_Ice_Age The Nordics, Alps were about 2 degrees colder than today. I guess it wasn't too nice.