Climatologists have supercomputers to predict the weather, but their models work very short term, a few days at best. Which is a good thing, their work is vital for air travel and hurricanes, however they're not always accurate, despite their advanced technology. For example, tomorrow will be 50% chance of rain... ok, that means 50% of no rain. You have similar odds flipping a coin!

Even for hurricanes, they can't get it right:

Dorian is expected to slow as it approaches Florida, but forecasters say it's too soon to determine where the greatest impacts will be.

https://eu.usatoday.com/story/news/weather/2019/08/29/hurricane-dorian-hit-florida-major-category-3-storm-labor-day/2149021001/

It's all statistics. If they can't get things right for a few days, how can they predict anything 1 year, even 10 years from now?