There are many sources of climate data online.  I’ve discussed a number of them before, and you can find them by searching this blog for the category “Sources of weather and climate data.”  Here are a few more tools that you can use to look at trends in climate and some other related information over time.

https://www.climatechangenews.com/2015/10/21/7-climate-change-data-tools-and-what-they-tell-you/

cait-map-view