| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 2.20 | 2.21 | -0.01 | 
| Feb | 1.91 | 1.98 | -0.07 | 
| Mar | 2.40 | 2.39 | 0.01 | 
| Apr | 3.78 | 3.80 | -0.02 | 
| May | 4.51 | 4.58 | -0.07 | 
| Jun | 4.56 | 4.56 | 0.00 | 
| Jul | 4.32 | 4.41 | -0.09 | 
| Aug | 4.06 | 4.04 | 0.02 | 
| Sep | 3.42 | 3.38 | 0.04 | 
| Oct | 3.38 | 3.44 | -0.06 | 
| Nov | 2.68 | 2.70 | -0.02 | 
| Dec | 2.21 | 2.21 | 0.00 | 
| 39.43 | 39.70 | -0.27 |