| 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Heizgradtage 12/20 Grambach
| 2025 | Jänner | Februar | März | April | Mai | Juni | Juli | August | September | Oktober | November | Dezember |
| 1 | 19.1 | 14.5 | 12.7 | 8.8 | 0.0 | 0.0 | 0.0 | |||||
| 2 | 17.5 | 14.9 | 12.5 | 0.0 | 0.0 | 0.0 | 0.0 | |||||
| 3 | 17.6 | 15.1 | 11.9 | 0.0 | 0.0 | 0.0 | ||||||
| 4 | 18.1 | 15.3 | 10.7 | 0.0 | 0.0 | 0.0 | ||||||
| 5 | 14.9 | 15.3 | 9.2 | 0.0 | 0.0 | 0.0 | ||||||
| 6 | 12.2 | 15.8 | 8.6 | 11.1 | 0.0 | 0.0 | ||||||
| 7 | 13.3 | 16.6 | 8.6 | 11.3 | 0.0 | 0.0 | ||||||
| 8 | 14.1 | 16.1 | 8.0 | 10.5 | 0.0 | 0.0 | ||||||
| 9 | 14.5 | 15.1 | 8.0 | 8.9 | 0.0 | 0.0 | ||||||
| 10 | 16.2 | 15.3 | 8.5 | 0.0 | 0.0 | 0.0 | ||||||
| 11 | 17.5 | 16.2 | 0.0 | 0.0 | 0.0 | 0.0 | ||||||
| 12 | 18.6 | 16.9 | 0.0 | 0.0 | 0.0 | 0.0 | ||||||
| 13 | 19.2 | 16.7 | 8.4 | 0.0 | 0.0 | 0.0 | ||||||
| 14 | 18.3 | 17.5 | 11.2 | 0.0 | 0.0 | 0.0 | ||||||
| 15 | 17.1 | 19.0 | 12.2 | 0.0 | 0.0 | 0.0 | ||||||
| 16 | 16.9 | 19.3 | 12.6 | 0.0 | 0.0 | 0.0 | ||||||
| 17 | 17.4 | 19.2 | 13.5 | 0.0 | 0.0 | 0.0 | ||||||
| 18 | 18.3 | 19.0 | 14.0 | 0.0 | 0.0 | 0.0 | ||||||
| 19 | 19.7 | 18.9 | 12.5 | 0.0 | 0.0 | 0.0 | ||||||
| 20 | 19.3 | 17.8 | 10.2 | 0.0 | 0.0 | 0.0 | ||||||
| 21 | 19.1 | 16.7 | 8.5 | 0.0 | 0.0 | 0.0 | ||||||
| 22 | 17.7 | 16.1 | 0.0 | 0.0 | 0.0 | 0.0 | ||||||
| 23 | 14.9 | 13.9 | 0.0 | 0.0 | 0.0 | 0.0 | ||||||
| 24 | 15.3 | 12.5 | 0.0 | 0.0 | 0.0 | 0.0 | ||||||
| 25 | 15.2 | 12.3 | 0.0 | 0.0 | 0.0 | |||||||
| 26 | 11.8 | 12.0 | 0.0 | 0.0 | 0.0 | |||||||
| 27 | 10.1 | 12.5 | 8.3 | 0.0 | 0.0 | |||||||
| 28 | 10.9 | 12.7 | 9.2 | 0.0 | 0.0 | 0.0 | ||||||
| 29 | 12.4 | 8.5 | 0.0 | 0.0 | 0.0 | |||||||
| 30 | 12.8 | 8.0 | 0.0 | 0.0 | 0.0 | |||||||
| 31 | 13.4 | 9.1 | 0.0 | |||||||||
| Gesamt | 493.4 | 443.2 | 244.9 | 50.6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |