| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 2.22 | 2.26 | -0.04 | 
| Feb | 1.98 | 2.10 | -0.12 | 
| Mar | 2.59 | 2.69 | -0.10 | 
| Apr | 3.98 | 3.96 | 0.02 | 
| May | 4.36 | 4.42 | -0.06 | 
| Jun | 4.56 | 4.62 | -0.06 | 
| Jul | 4.26 | 4.22 | 0.04 | 
| Aug | 3.30 | 3.17 | 0.13 | 
| Sep | 3.13 | 3.18 | -0.05 | 
| Oct | 3.28 | 3.27 | 0.01 | 
| Nov | 3.10 | 3.14 | -0.04 | 
| Dec | 2.26 | 2.38 | -0.12 | 
| 39.02 | 39.41 | -0.39 |