| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 3.60 | 3.89 | -0.29 | 
| Feb | 3.12 | 3.37 | -0.25 | 
| Mar | 4.19 | 4.48 | -0.29 | 
| Apr | 4.25 | 4.59 | -0.34 | 
| May | 3.88 | 4.05 | -0.17 | 
| Jun | 4.46 | 4.46 | 0.00 | 
| Jul | 4.19 | 4.17 | 0.02 | 
| Aug | 4.19 | 4.27 | -0.08 | 
| Sep | 4.53 | 4.49 | 0.04 | 
| Oct | 4.78 | 4.98 | -0.20 | 
| Nov | 3.98 | 4.06 | -0.08 | 
| Dec | 4.29 | 4.66 | -0.37 | 
| 49.46 | 51.47 | -2.01 |