| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 4.40  | 4.60  | -0.20  | 
| Feb | 4.10  | 4.24  | -0.14  | 
| Mar | 4.54  | 4.61  | -0.07  | 
| Apr | 3.67  | 3.90  | -0.23  | 
| May | 3.77  | 3.81  | -0.04  | 
| Jun | 4.08  | 4.05  | 0.03  | 
| Jul | 4.03  | 4.01  | 0.02  | 
| Aug | 4.31  | 4.59  | -0.28  | 
| Sep | 3.62  | 3.73  | -0.11  | 
| Oct | 3.36  | 3.44  | -0.08  | 
| Nov | 3.65  | 3.99  | -0.34  | 
| Dec | 4.62  | 4.94  | -0.32  | 
48.15  | 49.91  | -1.76  |