Monthly Average Temperatures At Different Lattitudes

Hello! I need a dataset that contains monthly average temperatures at different lattitudes, going as far back as the 1900s. Where can I find something like this?

Also, I saw monthly temperature anomaly data on NOAA’s Climate at a glance tool, which were with respect to the 1901-2000 average. However, I cannot seem to find the 1901-2000 average data. Do any of you know where I can find it? (https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/global/time-series)

I really appreciate the help!