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U.S. Daily Weather Maps
U.S. Daily Weather Maps
The U.S. Signal Office began publishing weather maps as the War Department Maps on Jan. 1, 1871. When the meteorological activities of the Signal Corps were transferred to the newly-created Weather Bureau in 1891, the title of the weather map changed to the Department of Agriculture Weather Map. In 1913, the title became simply Daily Weather Map. In 1969, the Weather Bureau began publishing a weekly compilation of daily maps with the title Daily Weather Maps (Weekly series).
Scope of Coverage
This site provides access to historical U.S. daily weather maps from 1871 through 2002. To see weather maps for 2003 - present go to: http://www.wpc.ncep.noaa.gov/dwm/dwm.shtml
The earliest weather maps featured only a map of the continental U.S. with the day's air temperature, barometric pressure, wind velocity and direction, and a general indication of the weather for various cities around the country plotted directly on the map.
Within a short time the Signal Office added a table showing the change in barometric pressure during the most recent 8 hours, the temperature change within the most recent 24 hours, relative humidity, and total precipitation within the most recent 24 hours. The Signal Office also added a general discussion of synoptic weather features and forecast, and then isobars and isotherms, on the maps. By the end of 1872 the map had acquired the format it would use for the rest of its run.
The daily weather maps for the period January 1 - August 6, 1914, also include a Northern Hemisphere map with data table.
How to Locate Issues of the Daily Weather Maps
Use one of the drop-down lists below to view a weather map. For maps prior to April 1968, choose the year, the month, and the specific day you wish to view, then click the See Daily Map button. Maps for April 1968 and later can be viewed by choosing the year, month, and week before clicking the See Weekly Map button.
NOTE: Viewing the weather maps requires the free DjVu Browser Plug-In. Caminova offers plug-ins for Windows, Mac OS X, and Unix. To print a copy of the map you are viewing, use the print icon within the DjVu Browser Plug-in. Do not use the browser print icon or menu.
Funding for this project was provided by the NOAA Climate Database Modernization Program (CDMP), National Climatic Data Center, Asheville, NC.
Please credit the NOAA Central Library Data Imaging Project when using these weather maps.
If you have questions or comments concerning the weather maps, or you need further assistance, please contact: