| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 3.58  | 3.67  | -0.09  | 
| Feb | 2.94  | 3.07  | -0.13  | 
| Mar | 3.78  | 3.98  | -0.20  | 
| Apr | 4.04  | 4.15  | -0.11  | 
| May | 3.98  | 3.86  | 0.12  | 
| Jun | 4.09  | 4.04  | 0.05  | 
| Jul | 4.32  | 4.44  | -0.12  | 
| Aug | 4.24  | 4.26  | -0.02  | 
| Sep | 4.02  | 4.23  | -0.21  | 
| Oct | 3.15  | 3.30  | -0.15  | 
| Nov | 3.07  | 3.17  | -0.10  | 
| Dec | 3.47  | 3.79  | -0.32  | 
44.68  | 45.96  | -1.28  |