Information on
1922 / 10: Observer Ferdinand Travnicek (until 1928 / 11), alternating with G. Striedinger.
1924 / 02: New font for the monthly tables with the new columns "Visibility", "Prevailing weather", "Weather pattern", "Clouds" (shape, direction, speed) and "Snow depth in cm" for total snow depth.
1928 / 12: Observer: Willibald Hiebler (until 1942 / 01).
1929 / 01: Handwritten addition / additional information on the "snow depth".
Notable events - a selection:
- There was practically no precipitation for 2 months between February 11 and April 12, 1921. The total amount of precipitation during this period was 0.8 mm.
- With a daily maximum of 32.0 °C, July 29, 1921 marked the end of 4 consecutive "Tropentage" (days with 30 °C and more).
- Relatively well hidden is the reference to the tornado of September 23, 1927, which left a trail of devastation through eastern Styria from 2:30 a.m. in Graz; wind symbol under notes. This tornado was investigated in detail by Alfred Wegener.
- From November 25 to December 15, 1927, no sunshine was recorded in Graz for 3 weeks(!).
- On February 3, 1929, the lowest temperature measured in Graz was recorded at -23.7 °C (together with January 24, 1903); the monthly average was -8.7 °C.