| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.09 | 4.27 | -0.18 |
| Feb | 4.24 | 4.32 | -0.08 |
| Mar | 4.62 | 4.79 | -0.17 |
| Apr | 3.70 | 3.94 | -0.24 |
| May | 2.68 | 2.96 | -0.28 |
| Jun | 4.20 | 4.12 | 0.08 |
| Jul | 4.61 | 4.80 | -0.19 |
| Aug | 4.38 | 4.29 | 0.09 |
| Sep | 3.68 | 3.73 | -0.05 |
| Oct | 2.77 | 2.96 | -0.19 |
| Nov | 3.39 | 3.58 | -0.19 |
| Dec | 4.54 | 4.67 | -0.13 |
46.90 | 48.43 | -1.53 |