NOAA claims that the raw US minimum temperature trend from 1895-2007 is 0.054/C per decade

ftp://ftp.ncdc.noaa.gov/pub/data/ushcn/v2/monthly/menne-etal2009.pdf
This is complete BS. The actual 1895-2007 raw minimum trend is 0.020/C per decade. Whatever they are using for “raw” is not the raw data.

They then adjust tamper the trend to 0.90C/data, which means that they have increased the trend to 450% of its measured value – indicating a S/N ratio close to zero.
Maximum temperatures are even worse. They increase the trend to 700% of its measured value (0.009C/decade.)

No legitimate scientist would release complete crap like this, which is why NOAA does release it – without any warnings.