This interactive matrix parses long-term historical records from the station log files. Select a dataset below, and adjust the year using the dropdown menu.
| Day | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2.6 | 7.6 | 9.1 | 10.7 | 16.3 | 16.3 | 19.9 | 20.6 | 16.5 | 15.3 | — | — |
| 2 | 1.1 | 6.8 | 9.8 | 8.9 | 14.5 | 15.0 | 20.7 | 21.8 | 17.1 | 13.7 | — | — |
| 3 | 0.3 | 4.9 | 8.9 | 10.9 | 15.1 | 14.1 | 19.5 | 24.5 | 20.8 | 13.4 | — | — |
| 4 | -1.8 | 7.5 | 9.4 | 10.4 | 13.8 | 14.3 | 20.8 | 22.1 | 18.7 | 14.7 | — | — |
| 5 | -1.7 | 7.5 | 10.4 | 10.3 | 13.8 | 13.9 | 21.7 | 20.4 | 16.5 | 14.5 | — | — |
| 6 | -1.4 | 9.0 | 8.4 | 8.7 | 11.4 | 13.1 | 24.1 | 17.2 | 18.3 | 14.5 | — | — |
| 7 | 2.7 | 8.1 | 8.2 | 13.3 | 11.6 | 14.2 | 24.6 | 18.1 | 18.7 | 12.3 | — | — |
| 8 | 3.9 | 8.8 | 8.5 | 16.6 | 12.8 | 13.7 | 25.9 | 19.2 | 14.5 | 9.9 | — | — |
| 9 | 3.7 | 7.5 | 9.2 | 13.4 | 15.0 | 12.7 | 25.6 | 22.9 | 13.6 | 14.7 | — | — |
| 10 | 0.9 | 9.0 | 9.8 | 9.1 | 10.6 | 12.2 | 24.9 | 21.7 | 15.5 | — | — | — |
| 11 | 3.7 | 9.9 | 9.4 | 10.1 | 7.1 | 11.9 | 23.2 | 20.7 | 17.5 | — | — | — |
| 12 | 9.9 | 8.0 | 9.0 | 9.9 | 9.4 | 17.9 | 21.8 | 24.7 | 16.0 | — | — | — |
| 13 | 9.2 | 6.2 | 6.7 | 7.4 | 8.7 | 16.8 | 20.9 | 26.1 | 19.1 | — | — | — |
| 14 | 4.8 | 2.8 | 5.1 | 9.6 | 8.2 | 16.4 | 22.2 | 26.1 | 19.5 | — | — | — |
| 15 | 8.1 | 5.1 | 5.6 | 12.9 | 9.5 | 17.4 | 22.6 | 23.5 | 17.9 | — | — | — |
| 16 | 6.7 | 6.8 | 8.4 | 12.5 | 10.3 | 19.2 | 22.3 | 21.0 | 15.2 | — | — | — |
| 17 | 8.0 | 4.0 | 10.4 | 13.1 | 11.7 | 18.9 | 21.9 | 22.6 | 15.4 | — | — | — |
| 18 | 8.4 | 4.4 | 10.8 | 12.7 | 10.3 | 19.5 | 19.6 | 21.1 | 14.4 | — | — | — |
| 19 | 8.4 | 5.3 | 9.8 | 10.9 | 13.2 | 21.8 | 17.7 | 19.1 | 18.5 | — | — | — |
| 20 | 8.6 | 7.6 | 8.5 | 9.1 | 14.8 | 20.1 | 18.2 | 17.8 | 16.3 | — | — | — |
| 21 | 7.8 | 10.7 | 7.1 | 9.3 | 16.4 | 23.1 | 18.0 | 17.1 | 14.6 | — | — | — |
| 22 | 8.2 | 10.9 | 6.8 | 11.0 | 20.0 | 22.7 | 19.7 | 16.7 | 17.7 | — | — | — |
| 23 | 7.1 | 10.0 | 8.5 | 12.0 | 22.8 | 25.8 | 19.9 | 16.8 | 17.9 | — | — | — |
| 24 | 6.9 | 11.5 | 9.9 | 11.4 | 23.1 | 28.7 | 22.0 | 17.1 | 15.0 | — | — | — |
| 25 | 6.5 | 10.9 | 6.3 | 11.3 | 25.1 | 27.3 | 21.6 | 20.1 | 16.5 | — | — | — |
| 26 | 5.3 | 10.5 | 6.1 | 12.4 | 25.1 | 27.9 | 21.3 | 22.3 | 15.3 | — | — | — |
| 27 | 6.8 | 10.4 | 8.6 | 13.8 | 21.7 | 24.2 | 20.6 | 20.5 | 16.0 | — | — | — |
| 28 | 3.4 | 7.8 | 7.2 | 12.3 | 22.9 | 20.6 | 21.8 | 18.0 | 15.6 | — | — | — |
| 29 | 3.8 | 7.0 | 12.7 | 20.2 | 18.3 | 24.0 | 17.7 | 19.7 | — | — | — | |
| 30 | 7.2 | 9.4 | 15.5 | 21.5 | 18.3 | 22.0 | 18.2 | 19.8 | — | — | — | |
| 31 | 7.6 | 11.4 | 18.5 | 21.1 | 17.4 | — | — |