| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 4.03  | 4.20  | -0.17  | 
| Feb | 3.28  | 3.43  | -0.15  | 
| Mar | 3.87  | 3.90  | -0.03  | 
| Apr | 4.51  | 4.46  | 0.05  | 
| May | 4.48  | 4.40  | 0.08  | 
| Jun | 4.92  | 4.86  | 0.06  | 
| Jul | 4.25  | 4.04  | 0.21  | 
| Aug | 4.39  | 4.21  | 0.18  | 
| Sep | 3.99  | 4.12  | -0.13  | 
| Oct | 4.87  | 5.31  | -0.44  | 
| Nov | 4.16  | 4.51  | -0.35  | 
| Dec | 4.37  | 4.74  | -0.37  | 
51.12  | 52.18  | -1.06  |