Meteorological Data includes daily, weekly, monthly and yearly records. Previous to 1905, these records were bound separately. Daily journals contain written summaries of the daily weather and most volumes have an index to meteorological events. The weekly, monthly and yearly (meteorological) volumes consist of data sheets including barometer readings, temperature, wind speed and direction, precipitation amounts and type, and remarks about the general state of the weather. "Record forms" are letter-press copies of data forms the La Crosse office sent to their national office. They contain information compiled from the daily and monthly reports. After 1905 these records were included with the meteorological records.

Meteorological records (1905-1948) volumes are divided into three parts; original monthly observations with summaries, annual meteorological summaries and daily local records. Barometer readings, temperature, wind speed and direction, and precipitation amounts and type as well as miscellaneous meteorological phenomena are the kinds of information recorded in these volumes. Each year also has an index to meteorological events such as lightning (damage and death), frosts (light, heavy, killing), tornados and rainbows as well as the days observations were not made or taken later than normal. Report of the Chief of the Weather Bureau (1906-1935) is an annual report of the federal agency, including such information as an administrative report, division reports, climatological summaries, and meteorological data for the country. Local Climatological Data includes yearly and monthly data, 1951-1974. The yearly records are complete to 1971. The monthly records are scattered and incomplete, and none are present for 1951-1960.