Day counts used in calculations of daily temperature averages in Bonn, Germany.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 5 | 5 | 3 | 4 | 2 | 2 | ||||||
| 2 | 5 | 5 | 3 | 5 | 2 | 2 | 3 | 4 | 2 | 3 | 4 | |
| 3 | 4 | 5 | 2 | 5 | 3 | 2 | 4 | 4 | 2 | 3 | ||
| 4 | 4 | 4 | 2 | 3 | 3 | 4 | 3 | 3 | 4 | 2 | 5 | |
| 5 | 5 | 2 | 4 | 2 | 2 | 5 | 3 | 3 | 4 | 3 | 3 | |
| 6 | 5 | 4 | 3 | 3 | 5 | 3 | 5 | 4 | 4 | 3 | ||
| 7 | 3 | 4 | 3 | 4 | 3 | 4 | 4 | 2 | 4 | 3 | ||
| 8 | 4 | 3 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | ||
| 9 | 5 | 5 | 2 | 3 | 2 | 3 | 4 | 3 | 3 | 4 | 2 | 3 |
| 10 | 5 | 2 | 3 | 4 | 5 | 3 | 4 | 3 | 3 | 2 | 4 | 2 |
| 11 | 5 | 2 | 3 | 4 | 3 | 2 | 2 | 2 | 2 | 5 | 3 | 5 |
| 12 | 2 | 3 | 4 | 2 | 3 | 5 | 4 | 3 | 3 | 3 | 3 | |
| 13 | 3 | 2 | 3 | 2 | 4 | 4 | 2 | 3 | 3 | 3 | 4 | 2 |
| 14 | 3 | 5 | 3 | 3 | 4 | 3 | 2 | 4 | 3 | 4 | 4 | 3 |
| 15 | 4 | 3 | 4 | 2 | 4 | 3 | 2 | 3 | 3 | 2 | 2 | 2 |
| 16 | 6 | 3 | 3 | 2 | 3 | 2 | 3 | 5 | 5 | 2 | 4 | |
| 17 | 3 | 4 | 2 | 2 | 3 | 4 | 5 | 4 | 2 | 2 | 3 | 3 |
| 18 | 4 | 3 | 2 | 4 | 4 | 4 | 4 | 2 | 3 | 3 | 3 | 5 |
| 19 | 2 | 3 | 4 | 2 | 2 | 4 | 3 | 3 | 3 | 2 | ||
| 20 | 5 | 2 | 3 | 4 | 3 | 4 | 2 | 2 | 2 | 3 | 4 | 4 |
| 21 | 4 | 3 | 2 | 2 | 3 | 2 | 3 | 3 | 4 | 3 | ||
| 22 | 4 | 4 | 3 | 3 | 4 | 3 | 2 | 3 | 4 | 3 | ||
| 23 | 6 | 2 | 3 | 3 | 5 | 2 | 2 | 3 | 4 | 2 | ||
| 24 | 4 | 4 | 2 | 2 | 2 | 2 | 5 | 3 | 4 | 4 | ||
| 25 | 3 | 2 | 3 | 4 | 2 | 4 | 4 | 2 | 4 | 2 | 2 | |
| 26 | 3 | 3 | 2 | 3 | 3 | 5 | 3 | 2 | 3 | 4 | 4 | |
| 27 | 5 | 2 | 2 | 3 | 2 | 3 | 3 | 2 | 4 | 3 | 5 | |
| 28 | 3 | 4 | 3 | 4 | 4 | 3 | 4 | 4 | 3 | 3 | 3 | |
| 29 | 5 | 2 | 2 | 3 | 4 | 3 | 3 | 2 | 3 | 2 | 3 | |
| 30 | 6 | 2 | 4 | 5 | 3 | 5 | 3 | 2 | 6 | 2 | ||
| 31 | 4 | 4 | 3 | 4 |