One of the factoids that climate-change denialists cling to is the fact (and it is a fact) that major storms haven't gotten measurably worse. The damage from storms has gotten measurably worse, but that can be attributed to increased development on coastlines. It might be that the storms themselves have gotten worse, but the data is not good enough to disentangle the two effects.
But storms are not the only natural disasters exacerbated by climate change. As I write this, the Thomas Fire has grown to be the third largest in California history. It only needs to grow another 10% to get to the #1 spot, and since it is only 40% contained at the moment and a new round of Santa Ana winds are blowing even as I write this, it will almost certainly achieve that dubious distinction.
But you can't draw conclusions about long-term trends from any single data point, so why am I bringing this up? Because the Thomas fire is not an isolated incident. It is only the latest in a long string of record-breaking fires in California. If you look at the list of the twenty largest fires in California history, fifteen of them have happened in the last 20 years. Nineteen of them have happened in the last 50 years. The only fire on the top 20 list before 1970 was in 1932.
This increase in fire size cannot be the result of human development. If anything, human development should result in smaller fires, because development removes wildland fuel.
There is also the national climate assessment, which has additional evidence that human-induced climate change is producing more catastrophic weather events. This report was published by the Trump administration. If that doesn't convince you that the problem is real and serious, then you will find kindred spirits among the birthers, the lunar landing denialists and the flat-earthers. Good luck to you.