| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 3.53 | 3.69 | -0.16 | 
| Feb | 3.16 | 3.32 | -0.16 | 
| Mar | 4.23 | 4.37 | -0.14 | 
| Apr | 4.31 | 4.49 | -0.18 | 
| May | 3.91 | 3.84 | 0.07 | 
| Jun | 4.25 | 4.18 | 0.07 | 
| Jul | 3.77 | 3.68 | 0.09 | 
| Aug | 3.82 | 4.11 | -0.29 | 
| Sep | 4.53 | 4.28 | 0.25 | 
| Oct | 4.44 | 4.65 | -0.21 | 
| Nov | 3.72 | 3.75 | -0.03 | 
| Dec | 4.44 | 4.54 | -0.10 | 
| 48.11 | 48.90 | -0.79 |