| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 0.45 | 0.46 | -0.01 | 
| Feb | 0.62 | 0.55 | 0.07 | 
| Mar | 0.98 | 0.96 | 0.02 | 
| Apr | 2.33 | 2.31 | 0.02 | 
| May | 3.31 | 3.29 | 0.02 | 
| Jun | 3.56 | 3.52 | 0.04 | 
| Jul | 2.90 | 2.73 | 0.17 | 
| Aug | 2.38 | 2.26 | 0.12 | 
| Sep | 1.86 | 1.79 | 0.07 | 
| Oct | 1.68 | 1.64 | 0.04 | 
| Nov | 0.69 | 0.73 | -0.04 | 
| Dec | 0.48 | 0.50 | -0.02 | 
| 21.24 | 20.74 | 0.50 |