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- Description
- Important Notes 
- Period of Record
-  Sample PDFs
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | Climatological               Data PublicationsSelect State                                                                                                                                                                                                                                                                                              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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | Alabama						Alaska						Arizona						Arkansas						California						Colorado						Connecticut*						Delaware**						District of Columbia**						Florida						Georgia						Hawaii+						Idaho						Illinois						Indiana						Iowa						Kansas						Kentucky						Louisiana						Maine*						Maryland**						Massachusetts*						Michigan						Minnesota						Mississippi						Missouri						Montana						Nebraska						Nevada						New Hampshire*						New Jersey						New Mexico						New York						North Carolina						North Dakota						Ohio						Oklahoma						Oregon						Pacific Islands+						Pennsylvania						Puerto Rico++						Rhode Island*						South Carolina						South Dakota						Tennessee						Texas						Utah						Vermont*						Virgin Islands++						Virginia						Washington						West Indies+++						West Virginia						Wisconsin						Wyoming |  |
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| Changes to this publication may be incorporated as additions and updates are made to the GHCN-Daily dataset.**These states are combined into a New England publication starting at various timeframes.  When you order these individual states, you may receive a New England publication (consisting of the states Massachusetts, New Hampshire, Rhode Island, Maine, Connecticut and Vermont)*.***These states are combined into a Maryland/Delaware publication starting at various timeframes. When you order these individual states, you may receive a Maryland/Delaware publication  (consisting of Maryland, Delaware and District of Columbia)*.  *Note: Washington Dulles  and Reagan airports are reported in the Virginia publication*.*+These states are combined into a Hawaii/Pacific Islandspublication starting at various timeframes.  When you order these individual states, you may receive a Hawaii/Pacific Islands publication (consisting of  Hawaii and Pacific Islands)*.*++These states are combined into a Virgin Islands/Puerto Ricopublication starting at various timeframes.  When you order these individual states, you may receive a Virgin Islands/Puerto Rico publication (consisting of  Virgin Islands and Puerto Rico)*.*+++ These countries are combined for the West Indies publication starting at various time frames.  When you order this publication, you will receive data for stations located in Columbia, Costa Rica, Cuba, Dominican Republic, El Salvador, French Antilles, Guyane, Guatemala, Haiti,  Honduras, Mexico, Netherlands Antilles, Nicaragua, Suriname, The West Indies and Venezuela*.Description
Monthly editions contain station daily maximum and minimum               temperatures and precipitation.  Some stations provide daily snowfall, snow depth, evaporation, and soil temperature               data. Each issue also contains monthly summaries for heating and cooling degree days (65 degrees Fbase).               The July issue also contains monthly heating degree days and snow               data for the preceding July through June. The annual issue contains               monthly and annual averages of temperature, precipitation, temperature               extremes, freeze data, soil temperatures, evaporation, and a recap               of monthly cooling degree days.              
Period               of Record 
 Climatological Data has existed in some form since 1890. While               this publication does include many locations, it does not include               all climatic stations for any given time. In some rare cases, there               are gaps in the archives available. Over the years that Climatological               Data has been produced, there have been changes, improvements, and               additions to the monthly publications. Also, the climatic stations               available today have not always been available for publication.
Sample PDFs
Over the years that Climatological Data has been published, the 	        format of the CD Publication has changed. There are three major formats 	        that you will find when reviewing archived CD Publications: the pre-River 	        Basin years of 1890 to June 1909, the River Basin years July 1909 to 1913, 	        and current CD Publications from 1913 to present day. 
Pre- River Basin Year 1890 to June 1909. 
These documents vary from state to state in the amount of 	          		data. Here is an example of Colorado's Pre-River Basin Years.	          		

**It is important to note that not all states have 		              CD Publications during this time period. There are some gaps in 		              the reports that were created. The reported data varies 		              from state to state.**
River Basin Year July 1909 to 1913. 
During the period of July 1909 until the end of 1913, the CD Publications were created for major River Basins 					such as Mississippi. The information for a state may appear in several 					River Basin CD Publications. To collect all the information for a 					state like Colorado, four River Basin publications are needed. The 					NCDC server will automatically provide customers with all the related 					River Basin documents. This sample is one of the four publications 					for Colorado.
Modern CD Publication 
The final sample is an example of the modern 			    	CD Publication.
Important Notes
Beginning with the May 2000 issue, these publications               now include graphs that depict the monthly data visually. Because               of this fact, the size of this publication from May 2000 forward               may be over 2 megabytes.
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