Listings contain the NCDC ID, division number, state, county, coop station name, start and end dates (year and month), latitude, longitude, and elevation.
Datum Info: NAD83. However, there is no strict verification for each site – we have found some of the older information is NAD27. This is usually distinguished by the lack of seconds in the position coordinates. Generally, we post the information we are given and sometimes the datum isn't specified.
Information taken from the NCDC catalog and updated as made available. Updated May, 2008.
| Alabama | Alaska | Arizona | Arkansas | California | Colorado |
| Connecticut | Delaware | Florida | Georgia | Hawaii | Idaho |
| Illinois | Indiana | Iowa | Kansas | Kentucky | Louisiana |
| Maine | Maryland | Massachusetts | Michegan | 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 Virginia | Wisconsin | Wyoming |