Where is a commercially usable dataset of temperature by zipcode by month?

Question

Lots of web sites offer this data (see http://www.google.com/search?hl=en&q="average+temperature"+by+zip+code) but I don't see the dataset they are using.

I looked at the national weather service for a bit (see for example http://www.rdc.noaa.gov/~foia/index.html#electronic), and didn't see it. NWS is in the National Oceanic and Atmospheric Administration (NOAA). NOAA links:

• http://www.ncdc.noaa.gov/oa/climate/climatedata.html#monthly
• http://www.ncdc.noaa.gov/oa/climate/research/cag3/explain.html.

It looks so close, but I still haven't found it.

Answer 1

Used NOAA in the past to fantastic results. I believe they have daily and monthly dumps. Really a ton of information, but it's remarkably intesresting!

Answer 2

You can try at NOAA website free data. Check out Global Summary of the Day.