Central North America
IPCC model plot (from AR4 Fig 9.12)
There are many stations in central North America.
Combining the IPCC model plot and the observed temperature time series yields the following plot.
The 1930ís were warmer than the present. The current temperatures are actually within the range from the models without CO2.
The following are from a selection of stations in the GISS database that have long-term data: