| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 3.61  | 3.84  | -0.23  | 
| Feb | 2.96  | 3.32  | -0.36  | 
| Mar | 4.31  | 4.64  | -0.33  | 
| Apr | 4.16  | 4.43  | -0.27  | 
| May | 3.51  | 3.47  | 0.04  | 
| Jun | 4.03  | 4.14  | -0.11  | 
| Jul | 3.56  | 3.69  | -0.13  | 
| Aug | 4.01  | 4.13  | -0.12  | 
| Sep | 4.12  | 4.23  | -0.11  | 
| Oct | 4.57  | 4.63  | -0.06  | 
| Nov | 3.80  | 3.99  | -0.19  | 
| Dec | 4.41  | 4.74  | -0.33  | 
47.05  | 49.25  | -2.20  |