| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 3.30 | 3.28 | 0.02 | 
| Feb | 3.10 | 3.17 | -0.07 | 
| Mar | 4.39 | 4.38 | 0.01 | 
| Apr | 5.38 | 5.32 | 0.06 | 
| May | 5.12 | 5.14 | -0.02 | 
| Jun | 4.42 | 4.56 | -0.14 | 
| Jul | 4.02 | 4.03 | -0.01 | 
| Aug | 3.16 | 3.23 | -0.07 | 
| Sep | 3.26 | 3.22 | 0.04 | 
| Oct | 3.64 | 3.62 | 0.02 | 
| Nov | 4.27 | 4.30 | -0.03 | 
| Dec | 3.56 | 3.72 | -0.16 | 
| 47.62 | 47.97 | -0.35 |