| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 3.49  | 3.65  | -0.16  | 
| Feb | 2.74  | 2.94  | -0.20  | 
| Mar | 3.94  | 4.20  | -0.26  | 
| Apr | 4.00  | 4.03  | -0.03  | 
| May | 4.07  | 4.08  | -0.01  | 
| Jun | 4.62  | 4.72  | -0.10  | 
| Jul | 4.62  | 4.67  | -0.05  | 
| Aug | 4.56  | 4.56  | 0.00  | 
| Sep | 4.45  | 4.40  | 0.05  | 
| Oct | 4.38  | 4.42  | -0.04  | 
| Nov | 3.49  | 3.60  | -0.11  | 
| Dec | 4.33  | 4.45  | -0.12  | 
48.69  | 49.72  | -1.03  |