| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.46 | 3.60 | -0.14 |
| Feb | 2.82 | 2.89 | -0.07 |
| Mar | 4.27 | 4.43 | -0.16 |
| Apr | 3.62 | 3.59 | 0.03 |
| May | 3.53 | 3.64 | -0.11 |
| Jun | 4.10 | 4.28 | -0.18 |
| Jul | 4.68 | 4.60 | 0.08 |
| Aug | 4.52 | 4.77 | -0.25 |
| Sep | 4.07 | 4.13 | -0.06 |
| Oct | 3.96 | 3.98 | -0.02 |
| Nov | 3.18 | 3.21 | -0.03 |
| Dec | 4.19 | 4.37 | -0.18 |
46.40 | 47.49 | -1.09 |