| Month | Daily Average Temp. (˚C) | Daily Max. Temp. (˚C) | Daily Min. Temp. (˚C) | Rainfall (mm) | Snowfall (cm) | Precipitation (mm) | Days with Precipitation | |||
| >0.2 mm | >5 mm | >10 mm | >25 mm | |||||||
| January | 3.6 | 6.2 | 0.9 | 196.6 | 19.4 | 215.9 | 20.0 | 12.3 | 7.6 | 2.2 |
| February | 4.9 | 8.4 | 1.4 | 119.7 | 8.6 | 128.3 | 15.6 | 8.0 | 4.4 | 0.8 |
| March | 7.2 | 11.2 | 3.2 | 135.8 | 5.4 | 141.2 | 18.5 | 9.2 | 5.1 | 0.9 |
| April | 10.0 | 14.5 | 5.4 | 117.3 | 0.6 | 117.9 | 16.6 | 7.8 | 4.1 | 0.7 |
| May | 13.1 | 17.8 | 8.2 | 99.2 | 0.0 | 99.2 | 14.7 | 6.4 | 3.5 | 0.6 |
| June | 15.7 | 20.4 | 10.9 | 79.8 | 0.0 | 79.8 | 12.9 | 5.3 | 2.7 | 0.4 |
| July | 18.0 | 23.3 | 12.7 | 50.2 | 0.0 | 50.2 | 8.1 | 3.1 | 1.6 | 0.3 |
| August | 18.2 | 23.6 | 12.7 | 49.9 | 0.0 | 49.9 | 7.5 | 3.0 | 1.6 | 0.4 |
| September | 15.4 | 20.6 | 10.1 | 70.3 | 0.0 | 70.3 | 9.0 | 4.2 | 2.4 | 0.6 |
| October | 10.6 | 14.3 | 6.8 | 158.2 | 0.2 | 158.3 | 16.3 | 8.7 | 5.6 | 1.5 |
| November | 6.1 | 8.8 | 3.4 | 243.7 | 6.2 | 249.8 | 20.9 | 13.3 | 8.9 | 2.5 |
| December | 3.3 | 5.8 | 0.8 | 175.4 | 16.8 | 192.1 | 19.5 | 11.4 | 7.1 | 1.9 |
| Annual | 10.5 | 14.6 | 6.4 | 1495.7 | 57.2 | 1552.9 | 179.5 | 92.5 | 54.2 | 12.7 |