| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 3.59 | 3.73 | -0.14 | 
| Feb | 3.61 | 3.73 | -0.12 | 
| Mar | 4.60 | 4.72 | -0.12 | 
| Apr | 4.47 | 4.59 | -0.12 | 
| May | 4.82 | 5.08 | -0.26 | 
| Jun | 4.53 | 4.81 | -0.28 | 
| Jul | 4.73 | 4.94 | -0.21 | 
| Aug | 3.56 | 3.13 | 0.43 | 
| Sep | 3.84 | 3.57 | 0.27 | 
| Oct | 3.32 | 3.04 | 0.28 | 
| Nov | 3.08 | 2.96 | 0.12 | 
| Dec | 4.05 | 4.10 | -0.05 | 
| 48.20 | 48.40 | -0.20 |