Avg 
|
Min
|
Max
|
Range
|
|
|---|---|---|---|---|
| January | 9.622 | -1.7 | 25.2 | 26.9 |
| February | 10.591 | -2.9 | 27.7 | 30.6 |
| March | 11.969 | 1.3 | 28.5 | 27.2 |
| April | 13.620 | 1.3 | 30.1 | 28.8 |
| May | 15.542 | 4.7 | 33.6 | 28.9 |
| June | 18.739 | 0.0 | 41.5 | 41.5 |
| July | 20.719 | 11.3 | 41.1 | 29.8 |
| August | 21.128 | 12.8 | 40.4 | 27.6 |
| September | 19.429 | 8.6 | 36.9 | 28.3 |
| October | 17.317 | 3.5 | 33.1 | 29.6 |
| November | 13.449 | 0.6 | 30.8 | 30.2 |
| December | 11.367 | -1.3 | 24.3 | 25.6 |