| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.72 | 4.02 | -0.30 |
| Feb | 2.94 | 3.39 | -0.45 |
| Mar | 4.29 | 4.60 | -0.31 |
| Apr | 4.32 | 4.69 | -0.37 |
| May | 3.76 | 3.84 | -0.08 |
| Jun | 4.26 | 4.19 | 0.07 |
| Jul | 3.62 | 3.84 | -0.22 |
| Aug | 4.09 | 4.26 | -0.17 |
| Sep | 4.37 | 4.77 | -0.40 |
| Oct | 4.79 | 4.69 | 0.10 |
| Nov | 4.09 | 4.09 | 0.00 |
| Dec | 4.45 | 4.92 | -0.47 |
48.70 | 51.30 | -2.60 |