As of the end of September 2023, using NOAA's state-of-the-art climate monitoring system, USCRN, the two charts below provide the status of U.S. temperatures from "global warming" since the 2005 inception of USCRN monitoring.
This first chart simply plots the USCRN temperature anomalies and then adds linear trends for two rather distinct temperature response periods to the climate.
Period#1 (77 months) reveals a significant cooling trend, and Period#2 over the last 12+ years (148 months) has a very tiny cooling trend.
A big surprise is the fact that U.S. temperatures over the last 15 months have experienced a cooling trend while at the same time the "global" temperatures, per satellite monitoring, have experienced relatively large temp increases from a robust warming trend.
This major divergence in temperature responses reinforces the concept that there is no such thing as global warming. What does exist is regional warming and cooling that varies substantially across different time spans.
The second chart depicts the actual strength of the relationship between atmospheric CO2 levels and U.S. temperatures over the entire period of 225 months (18.75 years).
Based on an R2 of +0.02 between the two climate variables, there is no correlation, which can be summarized by the following: CO2 has little, if any, impact on U.S. climate warming or monthly temperatures. (Click on either image to enlarge.)
Additional regional and global temperature charts.
Note: Source for USCRN temperature data; source for CO2 data. Excel used for all calculations and plotting.