| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 4.43 | 4.64 | -0.21 | 
| Feb | 4.18 | 4.29 | -0.11 | 
| Mar | 4.57 | 4.65 | -0.08 | 
| Apr | 3.71 | 3.95 | -0.24 | 
| May | 3.71 | 3.81 | -0.10 | 
| Jun | 4.12 | 4.15 | -0.03 | 
| Jul | 4.10 | 4.06 | 0.04 | 
| Aug | 4.39 | 4.73 | -0.34 | 
| Sep | 3.72 | 3.86 | -0.14 | 
| Oct | 3.40 | 3.57 | -0.17 | 
| Nov | 3.67 | 3.93 | -0.26 | 
| Dec | 4.62 | 4.96 | -0.34 | 
| 48.62 | 50.60 | -1.98 |