| Month | Precipitation (mm) | Air Temperature (˚C) | ||||
| 2008 | 2009 | 30-yr avg. | 2008 | 2009 | 30-yr avg. | |
| January | 93 | 134 | 136 | 7.9 | 7.5 | 7.4 |
| February | 175 | 96 | 129 | 9.7 | 9.7 | 9.6 |
| March | 71 | 235 | 139 | 14.7 | 15.3 | 13.8 |
| April | 99 | 94 | 125 | 17.1 | 16.9 | 17.7 |
| May | 103 | 89 | 119 | 21.0 | 22.2 | 22.3 |
| June | 50 | 17 | 129 | 26.8 | 26.6 | 24.3 |
| July | 47 | 187 | 104 | 28.0 | 26.2 | 27.4 |
| August | 265 | 98 | 114 | 26.1 | 26.2 | 27.2 |
| September | 260 | 140 | 91 | 23.7 | 24.7 | 24.1 |
| October | 40 | 309 | 109 | 17.8 | 17.9 | 18.4 |
| November | 159 | 22 | 134 | 12.4 | 14.4 | 13.3 |
| December | 227 | 180 | 137 | 9.0 | 7.3 | 8.9 |