U.S. Army Signal Corps/Weather Bureau Annual Reports, 1861-1942

The Signal Corps was responsible for meteorological observations in the United States from 1861 to 1891. In 1891, responsibility for the meteorological work was transferred to the newly-formed U.S. Weather Bureau in the Department of Agriculture.

Scope of Coverage

These documents contain reports and correspondence from the Chief Signal Officer to the Secretary of War for the years 1861-1891. Beginning in 1892, they contain similar reports from the Chief of the U.S. Weather Bureau. Although the reporting year ends June 30, the meteorological data in these reports are presented on a calendar year basis. In 1935, the title was changed to the United States Meteorological Yearbook.

Signal Station
Army Signal Service - Cape Mendocino (1888)

How to Locate Issues of Annual Reports

To display the report you wish to see, click on the drop-down list below to choose the year, then click the "View Report" button. The reports are in PDF format and require the free Adobe Reader.

Select the year of the report
you wish to view.


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 this resource.

Contact Information

If you have questions or comments concerning the weather maps, or you need further assistance, please contact: Library.Reference@noaa.gov, 301-713-2600 ext. 157.