| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 0.80 | 0.92 | -0.12 | 
| Feb | 0.81 | 0.92 | -0.11 | 
| Mar | 1.62 | 1.73 | -0.11 | 
| Apr | 2.91 | 2.99 | -0.08 | 
| May | 4.15 | 4.32 | -0.17 | 
| Jun | 4.82 | 5.01 | -0.19 | 
| Jul | 4.20 | 4.28 | -0.08 | 
| Aug | 4.54 | 4.66 | -0.12 | 
| Sep | 3.24 | 3.35 | -0.11 | 
| Oct | 2.63 | 2.69 | -0.06 | 
| Nov | 1.57 | 1.66 | -0.09 | 
| Dec | 1.13 | 1.26 | -0.13 | 
| 32.42 | 33.79 | -1.37 |