NCDC transitioned to the nClimDiv dataset on Thursday, March 13, 2014. This was coincident with the release of the February 2014 monthly monitoring report. For details on this transition, please visit our public FTP site and our U.S. Climate Divisional Database site.
Look up monthly U.S., Statewide, Divisional, and Regional Temperature, Precipitation, Degree Days, and Palmer (Drought) rankings for 1-12, 18, 24, 36, 48, 60-month, and Year-to-Date time periods. Data and statistics are as of January 1895.
Please note, Degree Days are not available for Agricultural Belts.
Contiguous U.S. Average Temperature Rankings, December 1939
More information on Climatological Rankings
|Period||Avg Temp||20th Century
|120ᵗʰ Coolest||Coolest since: 1938||1983|
|1ˢᵗ Warmest||Warmest to Date||1939|