| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.40 | 3.56 | -0.16 |
| Feb | 3.53 | 3.66 | -0.13 |
| Mar | 4.20 | 4.23 | -0.03 |
| Apr | 4.35 | 4.33 | 0.02 |
| May | 4.63 | 4.78 | -0.15 |
| Jun | 4.47 | 4.68 | -0.21 |
| Jul | 5.01 | 5.29 | -0.28 |
| Aug | 4.02 | 4.12 | -0.10 |
| Sep | 3.12 | 3.29 | -0.17 |
| Oct | 2.86 | 2.88 | -0.02 |
| Nov | 2.94 | 3.05 | -0.11 |
| Dec | 4.02 | 4.27 | -0.25 |
46.55 | 48.14 | -1.59 |