| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.01 | 4.03 | -0.02 |
| Feb | 3.99 | 4.07 | -0.08 |
| Mar | 4.68 | 4.70 | -0.02 |
| Apr | 4.15 | 4.39 | -0.24 |
| May | 4.74 | 4.86 | -0.12 |
| Jun | 4.15 | 4.27 | -0.12 |
| Jul | 2.99 | 3.00 | -0.01 |
| Aug | 2.71 | 2.79 | -0.08 |
| Sep | 3.37 | 3.51 | -0.14 |
| Oct | 4.57 | 4.40 | 0.17 |
| Nov | 3.86 | 3.79 | 0.07 |
| Dec | 4.48 | 4.68 | -0.20 |
47.70 | 48.49 | -0.79 |