Here is 1934 graphed using data from NOAA (continental 48 states). One line per state. Each months anomaly from the 1895 – 2012 average for each state. Click on it for a larger version.

Notice how each month there are dozens of states temperature moving in the same direction, but there are large numbers of states going in the opposite direction.

Notice how one month into 1934, half the states were -10 to -14F colder than the long term average and others were over 5F above normal.