| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 4.69 | 4.71 | -0.02 | 
| Feb | 4.69 | 4.80 | -0.11 | 
| Mar | 4.93 | 4.87 | 0.06 | 
| Apr | 4.02 | 3.95 | 0.07 | 
| May | 3.82 | 3.93 | -0.11 | 
| Jun | 4.48 | 4.51 | -0.03 | 
| Jul | 4.66 | 4.81 | -0.15 | 
| Aug | 4.41 | 4.62 | -0.21 | 
| Sep | 4.19 | 4.35 | -0.16 | 
| Oct | 3.55 | 3.54 | 0.01 | 
| Nov | 4.17 | 4.26 | -0.09 | 
| Dec | 4.62 | 4.73 | -0.11 | 
| 52.23 | 53.08 | -0.85 |