| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 3.38  | 3.66  | -0.28  | 
| Feb | 2.99  | 3.15  | -0.16  | 
| Mar | 3.98  | 4.11  | -0.13  | 
| Apr | 4.03  | 4.18  | -0.15  | 
| May | 3.82  | 3.96  | -0.14  | 
| Jun | 4.31  | 4.43  | -0.12  | 
| Jul | 4.34  | 4.46  | -0.12  | 
| Aug | 4.27  | 4.50  | -0.23  | 
| Sep | 4.49  | 4.38  | 0.11  | 
| Oct | 4.65  | 4.84  | -0.19  | 
| Nov | 3.80  | 3.91  | -0.11  | 
| Dec | 4.11  | 4.49  | -0.38  | 
48.17  | 50.07  | -1.90  |