| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 2.16 | 2.18 | -0.02 | 
| Feb | 1.97 | 2.02 | -0.05 | 
| Mar | 2.73 | 2.68 | 0.05 | 
| Apr | 3.89 | 3.83 | 0.06 | 
| May | 4.47 | 4.35 | 0.12 | 
| Jun | 4.25 | 4.27 | -0.02 | 
| Jul | 4.07 | 4.25 | -0.18 | 
| Aug | 3.34 | 3.32 | 0.02 | 
| Sep | 3.11 | 3.03 | 0.08 | 
| Oct | 3.27 | 3.25 | 0.02 | 
| Nov | 2.95 | 2.86 | 0.09 | 
| Dec | 2.25 | 2.24 | 0.01 | 
| 38.46 | 38.28 | 0.18 |