| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 3.99  | 4.28  | -0.29  | 
| Feb | 3.41  | 4.26  | -0.85  | 
| Mar | 2.91  | 3.05  | -0.14  | 
| Apr | 1.30  | 1.32  | -0.02  | 
| May | 0.52  | 0.54  | -0.02  | 
| Jun | 0.10  | 0.12  | -0.02  | 
| Jul | 0.01  | 0.00  | 0.01  | 
| Aug | 0.05  | 0.02  | 0.03  | 
| Sep | 0.05  | 0.04  | 0.01  | 
| Oct | 0.85  | 1.01  | -0.16  | 
| Nov | 1.71  | 1.75  | -0.04  | 
| Dec | 3.55  | 4.11  | -0.56  | 
18.45  | 20.50  | -2.05  |