There's a correlation, but it's better to look at long term weather trends and averages, like this page does https://www.climate.gov/news-features/understanding-climate/... (read it while it's not censored yet). It shows a clear increase in average temperatures, at least for the time period we have fairly accurate figures (so after 1880).

for anything before 1880 and pre-history there's other sources like deep ice cores, geological strata, tree rings, etc. Not accurate, but good enough for an educated guess.